Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "The major change in this merge is the removal of the support for
  31-bit kernels.  Naturally 31-bit user space will continue to work via
  the compat layer.

  And then some cleanup, some improvements and bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (23 commits)
  s390/smp: wait until secondaries are active & online
  s390/hibernate: fix save and restore of kernel text section
  s390/cacheinfo: add missing facility check
  s390/syscalls: simplify syscall_get_arch()
  s390/irq: enforce correct irqclass_sub_desc array size
  s390: remove "64" suffix from mem64.S and swsusp_asm64.S
  s390/ipl: cleanup macro usage
  s390/ipl: cleanup shutdown_action attributes
  s390/ipl: cleanup bin attr usage
  s390/uprobes: fix address space annotation
  s390: add missing arch_release_task_struct() declaration
  s390: make couple of functions and variables static
  s390/maccess: improve s390_kernel_write()
  s390/maccess: remove potentially broken probe_kernel_write()
  s390/watchdog: support for KVM hypervisors and delete pr_info messages
  s390/watchdog: enable KEEPALIVE for /dev/watchdog
  s390/dasd: remove setting of scheduler from driver
  s390/traps: panic() instead of die() on translation exception
  s390: remove test_facility(2) (== z/Architecture mode active) checks
  s390/cmpxchg: simplify cmpxchg_double
  ...

arch/s390/Kbuild

@@ -4,6 +4,5 @@ obj-$(CONFIG_KVM)		+= kvm/
 obj-$(CONFIG_CRYPTO_HW)		+= crypto/
 obj-$(CONFIG_S390_HYPFS_FS)	+= hypfs/
 obj-$(CONFIG_APPLDATA_BASE)	+= appldata/
-obj-$(CONFIG_MATHEMU)		+= math-emu/
 obj-y				+= net/
 obj-$(CONFIG_PCI)		+= pci/

arch/s390/Kconfig

@@ -35,7 +35,7 @@ config GENERIC_BUG_RELATIVE_POINTERS
 	def_bool y
 
 config ARCH_DMA_ADDR_T_64BIT
-	def_bool 64BIT
+	def_bool y
 
 config GENERIC_LOCKBREAK
 	def_bool y if SMP && PREEMPT
@@ -59,7 +59,7 @@ config PCI_QUIRKS
 	def_bool n
 
 config ARCH_SUPPORTS_UPROBES
-	def_bool 64BIT
+	def_bool y
 
 config S390
 	def_bool y
@@ -111,19 +111,19 @@ config S390
 	select GENERIC_TIME_VSYSCALL
 	select HAVE_ALIGNED_STRUCT_PAGE if SLUB
 	select HAVE_ARCH_AUDITSYSCALL
-	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
+	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
-	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
-	select HAVE_BPF_JIT if 64BIT && PACK_STACK
+	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+	select HAVE_BPF_JIT if PACK_STACK
 	select HAVE_CMPXCHG_DOUBLE
 	select HAVE_CMPXCHG_LOCAL
 	select HAVE_DEBUG_KMEMLEAK
-	select HAVE_DYNAMIC_FTRACE if 64BIT
-	select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT
+	select HAVE_DYNAMIC_FTRACE
+	select HAVE_DYNAMIC_FTRACE_WITH_REGS
 	select HAVE_FTRACE_MCOUNT_RECORD
-	select HAVE_FUNCTION_GRAPH_TRACER if 64BIT
-	select HAVE_FUNCTION_TRACER if 64BIT
+	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_FUNCTION_TRACER
 	select HAVE_FUTEX_CMPXCHG if FUTEX
 	select HAVE_KERNEL_BZIP2
 	select HAVE_KERNEL_GZIP
@@ -133,7 +133,7 @@ config S390
 	select HAVE_KERNEL_XZ
 	select HAVE_KPROBES
 	select HAVE_KRETPROBES
-	select HAVE_KVM if 64BIT
+	select HAVE_KVM
 	select HAVE_LIVEPATCH
 	select HAVE_MEMBLOCK
 	select HAVE_MEMBLOCK_NODE_MAP
@@ -143,7 +143,6 @@ config S390
 	select HAVE_PERF_EVENTS
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_SYSCALL_TRACEPOINTS
-	select HAVE_UID16 if 32BIT
 	select HAVE_VIRT_CPU_ACCOUNTING
 	select MODULES_USE_ELF_RELA
 	select NO_BOOTMEM
@@ -199,18 +198,11 @@ config HAVE_MARCH_Z13_FEATURES
 
 choice
 	prompt "Processor type"
-	default MARCH_G5
-
-config MARCH_G5
-	bool "System/390 model G5 and G6"
-	depends on !64BIT
-	help
-	  Select this to build a 31 bit kernel that works
-	  on all ESA/390 and z/Architecture machines.
+	default MARCH_Z900
 
 config MARCH_Z900
 	bool "IBM zSeries model z800 and z900"
-	select HAVE_MARCH_Z900_FEATURES if 64BIT
+	select HAVE_MARCH_Z900_FEATURES
 	help
 	  Select this to enable optimizations for model z800/z900 (2064 and
 	  2066 series). This will enable some optimizations that are not
@@ -218,7 +210,7 @@ config MARCH_Z900
 
 config MARCH_Z990
 	bool "IBM zSeries model z890 and z990"
-	select HAVE_MARCH_Z990_FEATURES if 64BIT
+	select HAVE_MARCH_Z990_FEATURES
 	help
 	  Select this to enable optimizations for model z890/z990 (2084 and
 	  2086 series). The kernel will be slightly faster but will not work
@@ -226,7 +218,7 @@ config MARCH_Z990
 
 config MARCH_Z9_109
 	bool "IBM System z9"
-	select HAVE_MARCH_Z9_109_FEATURES if 64BIT
+	select HAVE_MARCH_Z9_109_FEATURES
 	help
 	  Select this to enable optimizations for IBM System z9 (2094 and
 	  2096 series). The kernel will be slightly faster but will not work
@@ -234,7 +226,7 @@ config MARCH_Z9_109
 
 config MARCH_Z10
 	bool "IBM System z10"
-	select HAVE_MARCH_Z10_FEATURES if 64BIT
+	select HAVE_MARCH_Z10_FEATURES
 	help
 	  Select this to enable optimizations for IBM System z10 (2097 and
 	  2098 series). The kernel will be slightly faster but will not work
@@ -242,7 +234,7 @@ config MARCH_Z10
 
 config MARCH_Z196
 	bool "IBM zEnterprise 114 and 196"
-	select HAVE_MARCH_Z196_FEATURES if 64BIT
+	select HAVE_MARCH_Z196_FEATURES
 	help
 	  Select this to enable optimizations for IBM zEnterprise 114 and 196
 	  (2818 and 2817 series). The kernel will be slightly faster but will
@@ -250,7 +242,7 @@ config MARCH_Z196
 
 config MARCH_ZEC12
 	bool "IBM zBC12 and zEC12"
-	select HAVE_MARCH_ZEC12_FEATURES if 64BIT
+	select HAVE_MARCH_ZEC12_FEATURES
 	help
 	  Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
 	  2827 series). The kernel will be slightly faster but will not work on
@@ -258,7 +250,7 @@ config MARCH_ZEC12
 
 config MARCH_Z13
 	bool "IBM z13"
-	select HAVE_MARCH_Z13_FEATURES if 64BIT
+	select HAVE_MARCH_Z13_FEATURES
 	help
 	  Select this to enable optimizations for IBM z13 (2964 series).
 	  The kernel will be slightly faster but will not work on older
@@ -266,9 +258,6 @@ config MARCH_Z13
 
 endchoice
 
-config MARCH_G5_TUNE
-	def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT
-
 config MARCH_Z900_TUNE
 	def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
 
@@ -307,9 +296,6 @@ config TUNE_DEFAULT
 	  Tune the generated code for the target processor for which the kernel
 	  will be compiled.
 
-config TUNE_G5
-	bool "System/390 model G5 and G6"
-
 config TUNE_Z900
 	bool "IBM zSeries model z800 and z900"
 
@@ -335,18 +321,10 @@ endchoice
 
 config 64BIT
 	def_bool y
-	prompt "64 bit kernel"
-	help
-	  Select this option if you have an IBM z/Architecture machine
-	  and want to use the 64 bit addressing mode.
-
-config 32BIT
-	def_bool y if !64BIT
 
 config COMPAT
 	def_bool y
 	prompt "Kernel support for 31 bit emulation"
-	depends on 64BIT
 	select COMPAT_BINFMT_ELF if BINFMT_ELF
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT_OLD_SIGACTION
@@ -385,8 +363,7 @@ config NR_CPUS
 	int "Maximum number of CPUs (2-512)"
 	range 2 512
 	depends on SMP
-	default "32" if !64BIT
-	default "64" if 64BIT
+	default "64"
 	help
 	  This allows you to specify the maximum number of CPUs which this
 	  kernel will support. The maximum supported value is 512 and the
@@ -427,15 +404,6 @@ config SCHED_TOPOLOGY
 
 source kernel/Kconfig.preempt
 
-config MATHEMU
-	def_bool y
-	prompt "IEEE FPU emulation"
-	depends on MARCH_G5
-	help
-	  This option is required for IEEE compliant floating point arithmetic
-	  on older ESA/390 machines. Say Y unless you know your machine doesn't
-	  need this.
-
 source kernel/Kconfig.hz
 
 endmenu
@@ -446,7 +414,6 @@ config ARCH_SPARSEMEM_ENABLE
 	def_bool y
 	select SPARSEMEM_VMEMMAP_ENABLE
 	select SPARSEMEM_VMEMMAP
-	select SPARSEMEM_STATIC if !64BIT
 
 config ARCH_SPARSEMEM_DEFAULT
 	def_bool y
@@ -462,7 +429,6 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE
 
 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
 	def_bool y
-	depends on 64BIT
 
 config FORCE_MAX_ZONEORDER
 	int
@@ -537,7 +503,6 @@ config QDIO
 
 menuconfig PCI
 	bool "PCI support"
-	depends on 64BIT
 	select HAVE_DMA_ATTRS
 	select PCI_MSI
 	help
@@ -607,7 +572,6 @@ config CHSC_SCH
 
 config SCM_BUS
 	def_bool y
-	depends on 64BIT
 	prompt "SCM bus driver"
 	help
 	  Bus driver for Storage Class Memory.
@@ -629,7 +593,7 @@ menu "Dump support"
 
 config CRASH_DUMP
 	bool "kernel crash dumps"
-	depends on 64BIT && SMP
+	depends on SMP
 	select KEXEC
 	help
 	  Generate crash dump after being started by kexec.
@@ -668,7 +632,7 @@ endmenu
 menu "Power Management"
 
 config ARCH_HIBERNATION_POSSIBLE
-	def_bool y if 64BIT
+	def_bool y
 
 source "kernel/power/Kconfig"
 
@@ -819,7 +783,6 @@ source "arch/s390/kvm/Kconfig"
 config S390_GUEST
 	def_bool y
 	prompt "s390 support for virtio devices"
-	depends on 64BIT
 	select TTY
 	select VIRTUALIZATION
 	select VIRTIO

arch/s390/Makefile

@@ -13,15 +13,6 @@
 # Copyright (C) 1994 by Linus Torvalds
 #
 
-ifndef CONFIG_64BIT
-LD_BFD		:= elf32-s390
-LDFLAGS		:= -m elf_s390
-KBUILD_CFLAGS	+= -m31
-KBUILD_AFLAGS	+= -m31
-UTS_MACHINE	:= s390
-STACK_SIZE	:= 8192
-CHECKFLAGS	+= -D__s390__ -msize-long
-else
 LD_BFD		:= elf64-s390
 LDFLAGS		:= -m elf64_s390
 KBUILD_AFLAGS_MODULE += -fPIC
@@ -31,11 +22,9 @@ KBUILD_AFLAGS	+= -m64
 UTS_MACHINE	:= s390x
 STACK_SIZE	:= 16384
 CHECKFLAGS	+= -D__s390__ -D__s390x__
-endif
 
 export LD_BFD
 
-mflags-$(CONFIG_MARCH_G5)     := -march=g5
 mflags-$(CONFIG_MARCH_Z900)   := -march=z900
 mflags-$(CONFIG_MARCH_Z990)   := -march=z990
 mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
@@ -47,7 +36,6 @@ mflags-$(CONFIG_MARCH_Z13)   := -march=z13
 aflags-y += $(mflags-y)
 cflags-y += $(mflags-y)
 
-cflags-$(CONFIG_MARCH_G5_TUNE)		+= -mtune=g5
 cflags-$(CONFIG_MARCH_Z900_TUNE)	+= -mtune=z900
 cflags-$(CONFIG_MARCH_Z990_TUNE)	+= -mtune=z990
 cflags-$(CONFIG_MARCH_Z9_109_TUNE)	+= -mtune=z9-109
@@ -104,7 +92,7 @@ KBUILD_AFLAGS	+= $(aflags-y)
 OBJCOPYFLAGS	:= -O binary
 
 head-y		:= arch/s390/kernel/head.o
-head-y		+= arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
+head-y		+= arch/s390/kernel/head64.o
 
 # See arch/s390/Kbuild for content of core part of the kernel
 core-y		+= arch/s390/
@@ -129,9 +117,7 @@ zfcpdump:
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
 vdso_install:
-ifeq ($(CONFIG_64BIT),y)
 	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
-endif
 	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
 
 archclean:

arch/s390/boot/compressed/Makefile

@@ -4,13 +4,11 @@
 # create a compressed vmlinux image from the original vmlinux
 #
 
-BITS := $(if $(CONFIG_64BIT),64,31)
-
 targets	:= vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
-targets += misc.o piggy.o sizes.h head$(BITS).o
+targets += misc.o piggy.o sizes.h head.o
 
-KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
+KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
 KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
 KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
@@ -19,7 +17,7 @@ KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
 GCOV_PROFILE := n
 
 OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o)
-OBJECTS += $(obj)/head$(BITS).o $(obj)/misc.o $(obj)/piggy.o
+OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o
 
 LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS)
@@ -34,8 +32,8 @@ quiet_cmd_sizes = GEN $@
 $(obj)/sizes.h: vmlinux
 	$(call if_changed,sizes)
 
-AFLAGS_head$(BITS).o += -I$(obj)
-$(obj)/head$(BITS).o: $(obj)/sizes.h
+AFLAGS_head.o += -I$(obj)
+$(obj)/head.o: $(obj)/sizes.h
 
 CFLAGS_misc.o += -I$(obj)
 $(obj)/misc.o: $(obj)/sizes.h

arch/s390/boot/compressed/head31.S

@@ -1,51 +0,0 @@
-/*
- * Startup glue code to uncompress the kernel
- *
- * Copyright IBM Corp. 2010
- *
- *   Author(s):	Martin Schwidefsky <schwidefsky@de.ibm.com>
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-#include <asm/page.h>
-#include "sizes.h"
-
-__HEAD
-ENTRY(startup_continue)
-	basr	%r13,0			# get base
-.LPG1:
-	# setup stack
-	l	%r15,.Lstack-.LPG1(%r13)
-	ahi	%r15,-96
-	l	%r1,.Ldecompress-.LPG1(%r13)
-	basr	%r14,%r1
-	# setup registers for memory mover & branch to target
-	lr	%r4,%r2
-	l	%r2,.Loffset-.LPG1(%r13)
-	la	%r4,0(%r2,%r4)
-	l	%r3,.Lmvsize-.LPG1(%r13)
-	lr	%r5,%r3
-	# move the memory mover someplace safe
-	la	%r1,0x200
-	mvc	0(mover_end-mover,%r1),mover-.LPG1(%r13)
-	# decompress image is started at 0x11000
-	lr	%r6,%r2
-	br	%r1
-mover:
-	mvcle	%r2,%r4,0
-	jo	mover
-	br	%r6
-mover_end:
-
-	.align	8
-.Lstack:
-	.long	0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
-.Ldecompress:
-	.long	decompress_kernel
-.Loffset:
-	.long	0x11000
-.Lmvsize:
-	.long	SZ__bss_start

arch/s390/boot/compressed/vmlinux.lds.S

@@ -1,12 +1,7 @@
 #include <asm-generic/vmlinux.lds.h>
 
-#ifdef CONFIG_64BIT
 OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
 OUTPUT_ARCH(s390:64-bit)
-#else
-OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
-OUTPUT_ARCH(s390:31-bit)
-#endif
 
 ENTRY(startup)
 

arch/s390/crypto/crypt_s390.h

@@ -369,14 +369,10 @@ static inline int crypt_s390_func_available(int func,
 
 	if (facility_mask & CRYPT_S390_MSA && !test_facility(17))
 		return 0;
-
-	if (facility_mask & CRYPT_S390_MSA3 &&
-	    (!test_facility(2) || !test_facility(76)))
+	if (facility_mask & CRYPT_S390_MSA3 && !test_facility(76))
 		return 0;
-	if (facility_mask & CRYPT_S390_MSA4 &&
-	    (!test_facility(2) || !test_facility(77)))
+	if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
 		return 0;
-
 	switch (func & CRYPT_S390_OP_MASK) {
 	case CRYPT_S390_KM:
 		ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);

arch/s390/hypfs/hypfs_diag0c.c

@@ -19,13 +19,9 @@
 static void diag0c(struct hypfs_diag0c_entry *entry)
 {
 	asm volatile (
-#ifdef CONFIG_64BIT
 		"	sam31\n"
 		"	diag	%0,%0,0x0c\n"
 		"	sam64\n"
-#else
-		"	diag %0,%0,0x0c\n"
-#endif
 		: /* no output register */
 		: "a" (entry)
 		: "memory");

arch/s390/include/asm/appldata.h

@@ -9,28 +9,6 @@
 
 #include <asm/io.h>
 
-#ifndef CONFIG_64BIT
-
-#define APPLDATA_START_INTERVAL_REC	0x00	/* Function codes for */
-#define APPLDATA_STOP_REC		0x01	/* DIAG 0xDC	      */
-#define APPLDATA_GEN_EVENT_REC		0x02
-#define APPLDATA_START_CONFIG_REC	0x03
-
-/*
- * Parameter list for DIAGNOSE X'DC'
- */
-struct appldata_parameter_list {
-	u16 diag;		/* The DIAGNOSE code X'00DC'	      */
-	u8  function;		/* The function code for the DIAGNOSE */
-	u8  parlist_length;	/* Length of the parameter list       */
-	u32 product_id_addr;	/* Address of the 16-byte product ID  */
-	u16 reserved;
-	u16 buffer_length;	/* Length of the application data buffer  */
-	u32 buffer_addr;	/* Address of the application data buffer */
-} __attribute__ ((packed));
-
-#else /* CONFIG_64BIT */
-
 #define APPLDATA_START_INTERVAL_REC	0x80
 #define APPLDATA_STOP_REC		0x81
 #define APPLDATA_GEN_EVENT_REC		0x82
@@ -51,8 +29,6 @@ struct appldata_parameter_list {
 	u64 buffer_addr;
 } __attribute__ ((packed));
 
-#endif /* CONFIG_64BIT */
-
 struct appldata_product_id {
 	char prod_nr[7];	/* product number */
 	u16  prod_fn;		/* product function */

arch/s390/include/asm/atomic.h

@@ -160,8 +160,6 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 
 #define ATOMIC64_INIT(i)  { (i) }
 
-#ifdef CONFIG_64BIT
-
 #define __ATOMIC64_NO_BARRIER	"\n"
 
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
@@ -274,99 +272,6 @@ static inline long long atomic64_cmpxchg(atomic64_t *v,
 
 #undef __ATOMIC64_LOOP
 
-#else /* CONFIG_64BIT */
-
-typedef struct {
-	long long counter;
-} atomic64_t;
-
-static inline long long atomic64_read(const atomic64_t *v)
-{
-	register_pair rp;
-
-	asm volatile(
-		"	lm	%0,%N0,%1"
-		: "=&d" (rp) : "Q" (v->counter)	);
-	return rp.pair;
-}
-
-static inline void atomic64_set(atomic64_t *v, long long i)
-{
-	register_pair rp = {.pair = i};
-
-	asm volatile(
-		"	stm	%1,%N1,%0"
-		: "=Q" (v->counter) : "d" (rp) );
-}
-
-static inline long long atomic64_xchg(atomic64_t *v, long long new)
-{
-	register_pair rp_new = {.pair = new};
-	register_pair rp_old;
-
-	asm volatile(
-		"	lm	%0,%N0,%1\n"
-		"0:	cds	%0,%2,%1\n"
-		"	jl	0b\n"
-		: "=&d" (rp_old), "+Q" (v->counter)
-		: "d" (rp_new)
-		: "cc");
-	return rp_old.pair;
-}
-
-static inline long long atomic64_cmpxchg(atomic64_t *v,
-					 long long old, long long new)
-{
-	register_pair rp_old = {.pair = old};
-	register_pair rp_new = {.pair = new};
-
-	asm volatile(
-		"	cds	%0,%2,%1"
-		: "+&d" (rp_old), "+Q" (v->counter)
-		: "d" (rp_new)
-		: "cc");
-	return rp_old.pair;
-}
-
-
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
-{
-	long long old, new;
-
-	do {
-		old = atomic64_read(v);
-		new = old + i;
-	} while (atomic64_cmpxchg(v, old, new) != old);
-	return new;
-}
-
-static inline void atomic64_set_mask(unsigned long long mask, atomic64_t *v)
-{
-	long long old, new;
-
-	do {
-		old = atomic64_read(v);
-		new = old | mask;
-	} while (atomic64_cmpxchg(v, old, new) != old);
-}
-
-static inline void atomic64_clear_mask(unsigned long long mask, atomic64_t *v)
-{
-	long long old, new;
-
-	do {
-		old = atomic64_read(v);
-		new = old & mask;
-	} while (atomic64_cmpxchg(v, old, new) != old);
-}
-
-static inline void atomic64_add(long long i, atomic64_t *v)
-{
-	atomic64_add_return(i, v);
-}
-
-#endif /* CONFIG_64BIT */
-
 static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
 {
 	long long c, old;

arch/s390/include/asm/bitops.h

@@ -51,32 +51,6 @@
 
 #define __BITOPS_NO_BARRIER	"\n"
 
-#ifndef CONFIG_64BIT
-
-#define __BITOPS_OR		"or"
-#define __BITOPS_AND		"nr"
-#define __BITOPS_XOR		"xr"
-#define __BITOPS_BARRIER	"\n"
-
-#define __BITOPS_LOOP(__addr, __val, __op_string, __barrier)	\
-({								\
-	unsigned long __old, __new;				\
-								\
-	typecheck(unsigned long *, (__addr));			\
-	asm volatile(						\
-		"	l	%0,%2\n"			\
-		"0:	lr	%1,%0\n"			\
-		__op_string "	%1,%3\n"			\
-		"	cs	%0,%1,%2\n"			\
-		"	jl	0b"				\
-		: "=&d" (__old), "=&d" (__new), "+Q" (*(__addr))\
-		: "d" (__val)					\
-		: "cc", "memory");				\
-	__old;							\
-})
-
-#else /* CONFIG_64BIT */
-
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
 
 #define __BITOPS_OR		"laog"
@@ -125,8 +99,6 @@
 
 #endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
 
-#endif /* CONFIG_64BIT */
-
 #define __BITOPS_WORDS(bits) (((bits) + BITS_PER_LONG - 1) / BITS_PER_LONG)
 
 static inline unsigned long *

arch/s390/include/asm/cmpxchg.h

@@ -80,15 +80,10 @@ extern void __cmpxchg_double_called_with_bad_pointer(void);
 ({									\
 	__typeof__(p1) __p1 = (p1);					\
 	__typeof__(p2) __p2 = (p2);					\
-	int __ret;							\
 	BUILD_BUG_ON(sizeof(*(p1)) != sizeof(long));			\
 	BUILD_BUG_ON(sizeof(*(p2)) != sizeof(long));			\
 	VM_BUG_ON((unsigned long)((__p1) + 1) != (unsigned long)(__p2));\
-	if (sizeof(long) == 4)						\
-		__ret = __cmpxchg_double_4(__p1, __p2, o1, o2, n1, n2);	\
-	else								\
-		__ret = __cmpxchg_double_8(__p1, __p2, o1, o2, n1, n2);	\
-	__ret;								\
+	__cmpxchg_double_8(__p1, __p2, o1, o2, n1, n2);			\
 })
 
 #define system_has_cmpxchg_double()	1

arch/s390/include/asm/cputime.h

@@ -22,15 +22,7 @@ typedef unsigned long long __nocast cputime64_t;
 
 static inline unsigned long __div(unsigned long long n, unsigned long base)
 {
-#ifndef CONFIG_64BIT
-	register_pair rp;
-
-	rp.pair = n >> 1;
-	asm ("dr %0,%1" : "+d" (rp) : "d" (base >> 1));
-	return rp.subreg.odd;
-#else /* CONFIG_64BIT */
 	return n / base;
-#endif /* CONFIG_64BIT */
 }
 
 #define cputime_one_jiffy		jiffies_to_cputime(1)
@@ -101,17 +93,8 @@ static inline void cputime_to_timespec(const cputime_t cputime,
 				       struct timespec *value)
 {
 	unsigned long long __cputime = (__force unsigned long long) cputime;
-#ifndef CONFIG_64BIT
-	register_pair rp;
-
-	rp.pair = __cputime >> 1;
-	asm ("dr %0,%1" : "+d" (rp) : "d" (CPUTIME_PER_SEC / 2));
-	value->tv_nsec = rp.subreg.even * NSEC_PER_USEC / CPUTIME_PER_USEC;
-	value->tv_sec = rp.subreg.odd;
-#else
 	value->tv_nsec = (__cputime % CPUTIME_PER_SEC) * NSEC_PER_USEC / CPUTIME_PER_USEC;
 	value->tv_sec = __cputime / CPUTIME_PER_SEC;
-#endif
 }
 
 /*
@@ -129,17 +112,8 @@ static inline void cputime_to_timeval(const cputime_t cputime,
 				      struct timeval *value)
 {
 	unsigned long long __cputime = (__force unsigned long long) cputime;
-#ifndef CONFIG_64BIT
-	register_pair rp;
-
-	rp.pair = __cputime >> 1;
-	asm ("dr %0,%1" : "+d" (rp) : "d" (CPUTIME_PER_USEC / 2));
-	value->tv_usec = rp.subreg.even / CPUTIME_PER_USEC;
-	value->tv_sec = rp.subreg.odd;
-#else
 	value->tv_usec = (__cputime % CPUTIME_PER_SEC) / CPUTIME_PER_USEC;
 	value->tv_sec = __cputime / CPUTIME_PER_SEC;
-#endif
 }
 
 /*

arch/s390/include/asm/ctl_reg.h

@@ -9,20 +9,12 @@
 
 #include <linux/bug.h>
 
-#ifdef CONFIG_64BIT
-# define __CTL_LOAD	"lctlg"
-# define __CTL_STORE	"stctg"
-#else
-# define __CTL_LOAD	"lctl"
-# define __CTL_STORE	"stctl"
-#endif
-
 #define __ctl_load(array, low, high) {					\
 	typedef struct { char _[sizeof(array)]; } addrtype;		\
 									\
 	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
 	asm volatile(							\
-		__CTL_LOAD " %1,%2,%0\n"				\
+		"	lctlg	%1,%2,%0\n"				\
 		: : "Q" (*(addrtype *)(&array)), "i" (low), "i" (high));\
 }
 
@@ -31,7 +23,7 @@
 									\
 	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
 	asm volatile(							\
-		__CTL_STORE " %1,%2,%0\n"				\
+		"	stctg	%1,%2,%0\n"				\
 		: "=Q" (*(addrtype *)(&array))				\
 		: "i" (low), "i" (high));				\
 }
@@ -60,9 +52,7 @@ void smp_ctl_clear_bit(int cr, int bit);
 union ctlreg0 {
 	unsigned long val;
 	struct {
-#ifdef CONFIG_64BIT
 		unsigned long	   : 32;
-#endif
 		unsigned long	   : 3;
 		unsigned long lap  : 1; /* Low-address-protection control */
 		unsigned long	   : 4;

arch/s390/include/asm/elf.h

@@ -107,11 +107,7 @@
 /*
  * These are used to set parameters in the core dumps.
  */
-#ifndef CONFIG_64BIT
-#define ELF_CLASS	ELFCLASS32
-#else /* CONFIG_64BIT */
 #define ELF_CLASS	ELFCLASS64
-#endif /* CONFIG_64BIT */
 #define ELF_DATA	ELFDATA2MSB
 #define ELF_ARCH	EM_S390
 

arch/s390/include/asm/idals.h

@@ -19,11 +19,7 @@
 #include <asm/cio.h>
 #include <asm/uaccess.h>
 
-#ifdef CONFIG_64BIT
 #define IDA_SIZE_LOG 12 /* 11 for 2k , 12 for 4k */
-#else
-#define IDA_SIZE_LOG 11 /* 11 for 2k , 12 for 4k */
-#endif
 #define IDA_BLOCK_SIZE (1L<<IDA_SIZE_LOG)
 
 /*
@@ -32,11 +28,7 @@
 static inline int
 idal_is_needed(void *vaddr, unsigned int length)
 {
-#ifdef CONFIG_64BIT
 	return ((__pa(vaddr) + length - 1) >> 31) != 0;
-#else
-	return 0;
-#endif
 }
 
 
@@ -77,7 +69,6 @@ static inline unsigned long *idal_create_words(unsigned long *idaws,
 static inline int
 set_normalized_cda(struct ccw1 * ccw, void *vaddr)
 {
-#ifdef CONFIG_64BIT
 	unsigned int nridaws;
 	unsigned long *idal;
 
@@ -93,7 +84,6 @@ set_normalized_cda(struct ccw1 * ccw, void *vaddr)
 		ccw->flags |= CCW_FLAG_IDA;
 		vaddr = idal;
 	}
-#endif
 	ccw->cda = (__u32)(unsigned long) vaddr;
 	return 0;
 }
@@ -104,12 +94,10 @@ set_normalized_cda(struct ccw1 * ccw, void *vaddr)
 static inline void
 clear_normalized_cda(struct ccw1 * ccw)
 {
-#ifdef CONFIG_64BIT
 	if (ccw->flags & CCW_FLAG_IDA) {
 		kfree((void *)(unsigned long) ccw->cda);
 		ccw->flags &= ~CCW_FLAG_IDA;
 	}
-#endif
 	ccw->cda = 0;
 }
 
@@ -181,12 +169,8 @@ idal_buffer_free(struct idal_buffer *ib)
 static inline int
 __idal_buffer_is_needed(struct idal_buffer *ib)
 {
-#ifdef CONFIG_64BIT
 	return ib->size > (4096ul << ib->page_order) ||
 		idal_is_needed(ib->data[0], ib->size);
-#else
-	return ib->size > (4096ul << ib->page_order);
-#endif
 }
 
 /*

arch/s390/include/asm/jump_label.h

@@ -8,14 +8,6 @@
 #define JUMP_LABEL_NOP_SIZE 6
 #define JUMP_LABEL_NOP_OFFSET 2
 
-#ifdef CONFIG_64BIT
-#define ASM_PTR ".quad"
-#define ASM_ALIGN ".balign 8"
-#else
-#define ASM_PTR ".long"
-#define ASM_ALIGN ".balign 4"
-#endif
-
 /*
  * We use a brcl 0,2 instruction for jump labels at compile time so it
  * can be easily distinguished from a hotpatch generated instruction.
@@ -24,8 +16,8 @@ static __always_inline bool arch_static_branch(struct static_key *key)
 {
 	asm_volatile_goto("0:	brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n"
 		".pushsection __jump_table, \"aw\"\n"
-		ASM_ALIGN "\n"
-		ASM_PTR " 0b, %l[label], %0\n"
+		".balign 8\n"
+		".quad 0b, %l[label], %0\n"
 		".popsection\n"
 		: : "X" (key) : : label);
 	return false;

arch/s390/include/asm/lowcore.h

@@ -13,163 +13,6 @@
 #include <asm/cpu.h>
 #include <asm/types.h>
 
-#ifdef CONFIG_32BIT
-
-#define LC_ORDER 0
-#define LC_PAGES 1
-
-struct save_area {
-	u32	ext_save;
-	u64	timer;
-	u64	clk_cmp;
-	u8	pad1[24];
-	u8	psw[8];
-	u32	pref_reg;
-	u8	pad2[20];
-	u32	acc_regs[16];
-	u64	fp_regs[4];
-	u32	gp_regs[16];
-	u32	ctrl_regs[16];
-} __packed;
-
-struct save_area_ext {
-	struct save_area	sa;
-	__vector128		vx_regs[32];
-};
-
-struct _lowcore {
-	psw_t	restart_psw;			/* 0x0000 */
-	psw_t	restart_old_psw;		/* 0x0008 */
-	__u8	pad_0x0010[0x0014-0x0010];	/* 0x0010 */
-	__u32	ipl_parmblock_ptr;		/* 0x0014 */
-	psw_t	external_old_psw;		/* 0x0018 */
-	psw_t	svc_old_psw;			/* 0x0020 */
-	psw_t	program_old_psw;		/* 0x0028 */
-	psw_t	mcck_old_psw;			/* 0x0030 */
-	psw_t	io_old_psw;			/* 0x0038 */
-	__u8	pad_0x0040[0x0058-0x0040];	/* 0x0040 */
-	psw_t	external_new_psw;		/* 0x0058 */
-	psw_t	svc_new_psw;			/* 0x0060 */
-	psw_t	program_new_psw;		/* 0x0068 */
-	psw_t	mcck_new_psw;			/* 0x0070 */
-	psw_t	io_new_psw;			/* 0x0078 */
-	__u32	ext_params;			/* 0x0080 */
-	__u16	ext_cpu_addr;			/* 0x0084 */
-	__u16	ext_int_code;			/* 0x0086 */
-	__u16	svc_ilc;			/* 0x0088 */
-	__u16	svc_code;			/* 0x008a */
-	__u16	pgm_ilc;			/* 0x008c */
-	__u16	pgm_code;			/* 0x008e */
-	__u32	trans_exc_code;			/* 0x0090 */
-	__u16	mon_class_num;			/* 0x0094 */
-	__u8	per_code;			/* 0x0096 */
-	__u8	per_atmid;			/* 0x0097 */
-	__u32	per_address;			/* 0x0098 */
-	__u32	monitor_code;			/* 0x009c */
-	__u8	exc_access_id;			/* 0x00a0 */
-	__u8	per_access_id;			/* 0x00a1 */
-	__u8	op_access_id;			/* 0x00a2 */
-	__u8	ar_mode_id;			/* 0x00a3 */
-	__u8	pad_0x00a4[0x00b8-0x00a4];	/* 0x00a4 */
-	__u16	subchannel_id;			/* 0x00b8 */
-	__u16	subchannel_nr;			/* 0x00ba */
-	__u32	io_int_parm;			/* 0x00bc */
-	__u32	io_int_word;			/* 0x00c0 */
-	__u8	pad_0x00c4[0x00c8-0x00c4];	/* 0x00c4 */
-	__u32	stfl_fac_list;			/* 0x00c8 */
-	__u8	pad_0x00cc[0x00d4-0x00cc];	/* 0x00cc */
-	__u32	extended_save_area_addr;	/* 0x00d4 */
-	__u32	cpu_timer_save_area[2];		/* 0x00d8 */
-	__u32	clock_comp_save_area[2];	/* 0x00e0 */
-	__u32	mcck_interruption_code[2];	/* 0x00e8 */
-	__u8	pad_0x00f0[0x00f4-0x00f0];	/* 0x00f0 */
-	__u32	external_damage_code;		/* 0x00f4 */
-	__u32	failing_storage_address;	/* 0x00f8 */
-	__u8	pad_0x00fc[0x0100-0x00fc];	/* 0x00fc */
-	psw_t	psw_save_area;			/* 0x0100 */
-	__u32	prefixreg_save_area;		/* 0x0108 */
-	__u8	pad_0x010c[0x0120-0x010c];	/* 0x010c */
-
-	/* CPU register save area: defined by architecture */
-	__u32	access_regs_save_area[16];	/* 0x0120 */
-	__u32	floating_pt_save_area[8];	/* 0x0160 */
-	__u32	gpregs_save_area[16];		/* 0x0180 */
-	__u32	cregs_save_area[16];		/* 0x01c0 */
-
-	/* Save areas. */
-	__u32	save_area_sync[8];		/* 0x0200 */
-	__u32	save_area_async[8];		/* 0x0220 */
-	__u32	save_area_restart[1];		/* 0x0240 */
-
-	/* CPU flags. */
-	__u32	cpu_flags;			/* 0x0244 */
-
-	/* Return psws. */
-	psw_t	return_psw;			/* 0x0248 */
-	psw_t	return_mcck_psw;		/* 0x0250 */
-
-	/* CPU time accounting values */
-	__u64	sync_enter_timer;		/* 0x0258 */
-	__u64	async_enter_timer;		/* 0x0260 */
-	__u64	mcck_enter_timer;		/* 0x0268 */
-	__u64	exit_timer;			/* 0x0270 */
-	__u64	user_timer;			/* 0x0278 */
-	__u64	system_timer;			/* 0x0280 */
-	__u64	steal_timer;			/* 0x0288 */
-	__u64	last_update_timer;		/* 0x0290 */
-	__u64	last_update_clock;		/* 0x0298 */
-	__u64	int_clock;			/* 0x02a0 */
-	__u64	mcck_clock;			/* 0x02a8 */
-	__u64	clock_comparator;		/* 0x02b0 */
-
-	/* Current process. */
-	__u32	current_task;			/* 0x02b8 */
-	__u32	thread_info;			/* 0x02bc */
-	__u32	kernel_stack;			/* 0x02c0 */
-
-	/* Interrupt, panic and restart stack. */
-	__u32	async_stack;			/* 0x02c4 */
-	__u32	panic_stack;			/* 0x02c8 */
-	__u32	restart_stack;			/* 0x02cc */
-
-	/* Restart function and parameter. */
-	__u32	restart_fn;			/* 0x02d0 */
-	__u32	restart_data;			/* 0x02d4 */
-	__u32	restart_source;			/* 0x02d8 */
-
-	/* Address space pointer. */
-	__u32	kernel_asce;			/* 0x02dc */
-	__u32	user_asce;			/* 0x02e0 */
-	__u32	current_pid;			/* 0x02e4 */
-
-	/* SMP info area */
-	__u32	cpu_nr;				/* 0x02e8 */
-	__u32	softirq_pending;		/* 0x02ec */
-	__u32	percpu_offset;			/* 0x02f0 */
-	__u32	machine_flags;			/* 0x02f4 */
-	__u8	pad_0x02f8[0x02fc-0x02f8];	/* 0x02f8 */
-	__u32	spinlock_lockval;		/* 0x02fc */
-
-	__u8	pad_0x0300[0x0e00-0x0300];	/* 0x0300 */
-
-	/*
-	 * 0xe00 contains the address of the IPL Parameter Information
-	 * block. Dump tools need IPIB for IPL after dump.
-	 * Note: do not change the position of any fields in 0x0e00-0x0f00
-	 */
-	__u32	ipib;				/* 0x0e00 */
-	__u32	ipib_checksum;			/* 0x0e04 */
-	__u32	vmcore_info;			/* 0x0e08 */
-	__u8	pad_0x0e0c[0x0e18-0x0e0c];	/* 0x0e0c */
-	__u32	os_info;			/* 0x0e18 */
-	__u8	pad_0x0e1c[0x0f00-0x0e1c];	/* 0x0e1c */
-
-	/* Extended facility list */
-	__u64	stfle_fac_list[32];		/* 0x0f00 */
-} __packed;
-
-#else /* CONFIG_32BIT */
-
 #define LC_ORDER 1
 #define LC_PAGES 2
 
@@ -354,8 +197,6 @@ struct _lowcore {
 	__u8	vector_save_area[1024];		/* 0x1c00 */
 } __packed;
 
-#endif /* CONFIG_32BIT */
-
 #define S390_lowcore (*((struct _lowcore *) 0))
 
 extern struct _lowcore *lowcore_ptr[];

arch/s390/include/asm/mman.h

@@ -8,7 +8,7 @@
 
 #include <uapi/asm/mman.h>
 
-#if !defined(__ASSEMBLY__) && defined(CONFIG_64BIT)
+#ifndef __ASSEMBLY__
 int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags);
 #define arch_mmap_check(addr, len, flags) s390_mmap_check(addr, len, flags)
 #endif

arch/s390/include/asm/mmu_context.h

@@ -19,9 +19,7 @@ static inline int init_new_context(struct task_struct *tsk,
 	atomic_set(&mm->context.attach_count, 0);
 	mm->context.flush_mm = 0;
 	mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS;
-#ifdef CONFIG_64BIT
 	mm->context.asce_bits |= _ASCE_TYPE_REGION3;
-#endif
 	mm->context.has_pgste = 0;
 	mm->context.use_skey = 0;
 	mm->context.asce_limit = STACK_TOP_MAX;
@@ -110,10 +108,8 @@ static inline void activate_mm(struct mm_struct *prev,
 static inline void arch_dup_mmap(struct mm_struct *oldmm,
 				 struct mm_struct *mm)
 {
-#ifdef CONFIG_64BIT
 	if (oldmm->context.asce_limit < mm->context.asce_limit)
 		crst_table_downgrade(mm, oldmm->context.asce_limit);
-#endif
 }
 
 static inline void arch_exit_mmap(struct mm_struct *mm)

arch/s390/include/asm/percpu.h

@@ -10,8 +10,6 @@
  */
 #define __my_cpu_offset S390_lowcore.percpu_offset
 
-#ifdef CONFIG_64BIT
-
 /*
  * For 64 bit module code, the module may be more than 4G above the
  * per cpu area, use weak definitions to force the compiler to
@@ -183,8 +181,6 @@
 #define this_cpu_cmpxchg_double_4 arch_this_cpu_cmpxchg_double
 #define this_cpu_cmpxchg_double_8 arch_this_cpu_cmpxchg_double
 
-#endif /* CONFIG_64BIT */
-
 #include <asm-generic/percpu.h>
 
 #endif /* __ARCH_S390_PERCPU__ */

arch/s390/include/asm/perf_event.h

@@ -9,8 +9,6 @@
 #ifndef _ASM_S390_PERF_EVENT_H
 #define _ASM_S390_PERF_EVENT_H
 
-#ifdef CONFIG_64BIT
-
 #include <linux/perf_event.h>
 #include <linux/device.h>
 #include <asm/cpu_mf.h>
@@ -92,5 +90,4 @@ struct sf_raw_sample {
 int perf_reserve_sampling(void);
 void perf_release_sampling(void);
 
-#endif /* CONFIG_64BIT */
 #endif /* _ASM_S390_PERF_EVENT_H */

arch/s390/include/asm/pgalloc.h

@@ -33,11 +33,7 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
 	*s = val;
 	n = (n / 256) - 1;
 	asm volatile(
-#ifdef CONFIG_64BIT
 		"	mvc	8(248,%0),0(%0)\n"
-#else
-		"	mvc	4(252,%0),0(%0)\n"
-#endif
 		"0:	mvc	256(256,%0),0(%0)\n"
 		"	la	%0,256(%0)\n"
 		"	brct	%1,0b\n"
@@ -50,24 +46,6 @@ static inline void crst_table_init(unsigned long *crst, unsigned long entry)
 	clear_table(crst, entry, sizeof(unsigned long)*2048);
 }
 
-#ifndef CONFIG_64BIT
-
-static inline unsigned long pgd_entry_type(struct mm_struct *mm)
-{
-	return _SEGMENT_ENTRY_EMPTY;
-}
-
-#define pud_alloc_one(mm,address)		({ BUG(); ((pud_t *)2); })
-#define pud_free(mm, x)				do { } while (0)
-
-#define pmd_alloc_one(mm,address)		({ BUG(); ((pmd_t *)2); })
-#define pmd_free(mm, x)				do { } while (0)
-
-#define pgd_populate(mm, pgd, pud)		BUG()
-#define pud_populate(mm, pud, pmd)		BUG()
-
-#else /* CONFIG_64BIT */
-
 static inline unsigned long pgd_entry_type(struct mm_struct *mm)
 {
 	if (mm->context.asce_limit <= (1UL << 31))
@@ -119,8 +97,6 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 	pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
 }
 
-#endif /* CONFIG_64BIT */
-
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
 	spin_lock_init(&mm->context.list_lock);

arch/s390/include/asm/pgtable.h

@@ -66,15 +66,9 @@ extern unsigned long zero_page_mask;
  * table can map
  * PGDIR_SHIFT determines what a third-level page table entry can map
  */
-#ifndef CONFIG_64BIT
-# define PMD_SHIFT	20
-# define PUD_SHIFT	20
-# define PGDIR_SHIFT	20
-#else /* CONFIG_64BIT */
-# define PMD_SHIFT	20
-# define PUD_SHIFT	31
-# define PGDIR_SHIFT	42
-#endif /* CONFIG_64BIT */
+#define PMD_SHIFT	20
+#define PUD_SHIFT	31
+#define PGDIR_SHIFT	42
 
 #define PMD_SIZE        (1UL << PMD_SHIFT)
 #define PMD_MASK        (~(PMD_SIZE-1))
@@ -90,15 +84,8 @@ extern unsigned long zero_page_mask;
  * that leads to 1024 pte per pgd
  */
 #define PTRS_PER_PTE	256
-#ifndef CONFIG_64BIT
-#define __PAGETABLE_PUD_FOLDED
-#define PTRS_PER_PMD	1
-#define __PAGETABLE_PMD_FOLDED
-#define PTRS_PER_PUD	1
-#else /* CONFIG_64BIT */
 #define PTRS_PER_PMD	2048
 #define PTRS_PER_PUD	2048
-#endif /* CONFIG_64BIT */
 #define PTRS_PER_PGD	2048
 
 #define FIRST_USER_ADDRESS  0UL
@@ -127,23 +114,19 @@ extern struct page *vmemmap;
 
 #define VMEM_MAX_PHYS ((unsigned long) vmemmap)
 
-#ifdef CONFIG_64BIT
 extern unsigned long MODULES_VADDR;
 extern unsigned long MODULES_END;
 #define MODULES_VADDR	MODULES_VADDR
 #define MODULES_END	MODULES_END
 #define MODULES_LEN	(1UL << 31)
-#endif
 
 static inline int is_module_addr(void *addr)
 {
-#ifdef CONFIG_64BIT
 	BUILD_BUG_ON(MODULES_LEN > (1UL << 31));
 	if (addr < (void *)MODULES_VADDR)
 		return 0;
 	if (addr > (void *)MODULES_END)
 		return 0;
-#endif
 	return 1;
 }
 
@@ -284,56 +267,6 @@ static inline int is_module_addr(void *addr)
  * pte_swap    is true for the bit pattern .10...xxxx10, (pte & 0x603) == 0x402
  */
 
-#ifndef CONFIG_64BIT
-
-/* Bits in the segment table address-space-control-element */
-#define _ASCE_SPACE_SWITCH	0x80000000UL	/* space switch event	    */
-#define _ASCE_ORIGIN_MASK	0x7ffff000UL	/* segment table origin	    */
-#define _ASCE_PRIVATE_SPACE	0x100	/* private space control	    */
-#define _ASCE_ALT_EVENT		0x80	/* storage alteration event control */
-#define _ASCE_TABLE_LENGTH	0x7f	/* 128 x 64 entries = 8k	    */
-
-/* Bits in the segment table entry */
-#define _SEGMENT_ENTRY_BITS	0x7fffffffUL	/* Valid segment table bits */
-#define _SEGMENT_ENTRY_ORIGIN	0x7fffffc0UL	/* page table origin	    */
-#define _SEGMENT_ENTRY_PROTECT	0x200	/* page protection bit		    */
-#define _SEGMENT_ENTRY_INVALID	0x20	/* invalid segment table entry	    */
-#define _SEGMENT_ENTRY_COMMON	0x10	/* common segment bit		    */
-#define _SEGMENT_ENTRY_PTL	0x0f	/* page table length		    */
-
-#define _SEGMENT_ENTRY_DIRTY	0	/* No sw dirty bit for 31-bit */
-#define _SEGMENT_ENTRY_YOUNG	0	/* No sw young bit for 31-bit */
-#define _SEGMENT_ENTRY_READ	0	/* No sw read bit for 31-bit */
-#define _SEGMENT_ENTRY_WRITE	0	/* No sw write bit for 31-bit */
-#define _SEGMENT_ENTRY_LARGE	0	/* No large pages for 31-bit */
-#define _SEGMENT_ENTRY_BITS_LARGE 0
-#define _SEGMENT_ENTRY_ORIGIN_LARGE 0
-
-#define _SEGMENT_ENTRY		(_SEGMENT_ENTRY_PTL)
-#define _SEGMENT_ENTRY_EMPTY	(_SEGMENT_ENTRY_INVALID)
-
-/*
- * Segment table entry encoding (I = invalid, R = read-only bit):
- *		..R...I.....
- * prot-none	..1...1.....
- * read-only	..1...0.....
- * read-write	..0...0.....
- * empty	..0...1.....
- */
-
-/* Page status table bits for virtualization */
-#define PGSTE_ACC_BITS	0xf0000000UL
-#define PGSTE_FP_BIT	0x08000000UL
-#define PGSTE_PCL_BIT	0x00800000UL
-#define PGSTE_HR_BIT	0x00400000UL
-#define PGSTE_HC_BIT	0x00200000UL
-#define PGSTE_GR_BIT	0x00040000UL
-#define PGSTE_GC_BIT	0x00020000UL
-#define PGSTE_UC_BIT	0x00008000UL	/* user dirty (migration) */
-#define PGSTE_IN_BIT	0x00004000UL	/* IPTE notify bit */
-
-#else /* CONFIG_64BIT */
-
 /* Bits in the segment/region table address-space-control-element */
 #define _ASCE_ORIGIN		~0xfffUL/* segment table origin		    */
 #define _ASCE_PRIVATE_SPACE	0x100	/* private space control	    */
@@ -417,8 +350,6 @@ static inline int is_module_addr(void *addr)
 #define PGSTE_UC_BIT	0x0000800000000000UL	/* user dirty (migration) */
 #define PGSTE_IN_BIT	0x0000400000000000UL	/* IPTE notify bit */
 
-#endif /* CONFIG_64BIT */
-
 /* Guest Page State used for virtualization */
 #define _PGSTE_GPS_ZERO		0x0000000080000000UL
 #define _PGSTE_GPS_USAGE_MASK	0x0000000003000000UL
@@ -509,19 +440,6 @@ static inline int mm_use_skey(struct mm_struct *mm)
 /*
  * pgd/pmd/pte query functions
  */
-#ifndef CONFIG_64BIT
-
-static inline int pgd_present(pgd_t pgd) { return 1; }
-static inline int pgd_none(pgd_t pgd)    { return 0; }
-static inline int pgd_bad(pgd_t pgd)     { return 0; }
-
-static inline int pud_present(pud_t pud) { return 1; }
-static inline int pud_none(pud_t pud)	 { return 0; }
-static inline int pud_large(pud_t pud)	 { return 0; }
-static inline int pud_bad(pud_t pud)	 { return 0; }
-
-#else /* CONFIG_64BIT */
-
 static inline int pgd_present(pgd_t pgd)
 {
 	if ((pgd_val(pgd) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R2)
@@ -583,8 +501,6 @@ static inline int pud_bad(pud_t pud)
 	return (pud_val(pud) & mask) != 0;
 }
 
-#endif /* CONFIG_64BIT */
-
 static inline int pmd_present(pmd_t pmd)
 {
 	return pmd_val(pmd) != _SEGMENT_ENTRY_INVALID;
@@ -916,18 +832,14 @@ static inline int pte_unused(pte_t pte)
 
 static inline void pgd_clear(pgd_t *pgd)
 {
-#ifdef CONFIG_64BIT
 	if ((pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2)
 		pgd_val(*pgd) = _REGION2_ENTRY_EMPTY;
-#endif
 }
 
 static inline void pud_clear(pud_t *pud)
 {
-#ifdef CONFIG_64BIT
 	if ((pud_val(*pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3)
 		pud_val(*pud) = _REGION3_ENTRY_EMPTY;
-#endif
 }
 
 static inline void pmd_clear(pmd_t *pmdp)
@@ -1026,10 +938,6 @@ static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
 {
 	unsigned long pto = (unsigned long) ptep;
 
-#ifndef CONFIG_64BIT
-	/* pto in ESA mode must point to the start of the segment table */
-	pto &= 0x7ffffc00;
-#endif
 	/* Invalidation + global TLB flush for the pte */
 	asm volatile(
 		"	ipte	%2,%3"
@@ -1040,10 +948,6 @@ static inline void __ptep_ipte_local(unsigned long address, pte_t *ptep)
 {
 	unsigned long pto = (unsigned long) ptep;
 
-#ifndef CONFIG_64BIT
-	/* pto in ESA mode must point to the start of the segment table */
-	pto &= 0x7ffffc00;
-#endif
 	/* Invalidation + local TLB flush for the pte */
 	asm volatile(
 		"	.insn rrf,0xb2210000,%2,%3,0,1"
@@ -1054,10 +958,6 @@ static inline void __ptep_ipte_range(unsigned long address, int nr, pte_t *ptep)
 {
 	unsigned long pto = (unsigned long) ptep;
 
-#ifndef CONFIG_64BIT
-	/* pto in ESA mode must point to the start of the segment table */
-	pto &= 0x7ffffc00;
-#endif
 	/* Invalidate a range of ptes + global TLB flush of the ptes */
 	do {
 		asm volatile(
@@ -1376,17 +1276,6 @@ static inline pte_t mk_pte(struct page *page, pgprot_t pgprot)
 #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 
-#ifndef CONFIG_64BIT
-
-#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
-#define pud_deref(pmd) ({ BUG(); 0UL; })
-#define pgd_deref(pmd) ({ BUG(); 0UL; })
-
-#define pud_offset(pgd, address) ((pud_t *) pgd)
-#define pmd_offset(pud, address) ((pmd_t *) pud + pmd_index(address))
-
-#else /* CONFIG_64BIT */
-
 #define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
 #define pud_deref(pud) (pud_val(pud) & _REGION_ENTRY_ORIGIN)
 #define pgd_deref(pgd) (pgd_val(pgd) & _REGION_ENTRY_ORIGIN)
@@ -1407,8 +1296,6 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
 	return pmd + pmd_index(address);
 }
 
-#endif /* CONFIG_64BIT */
-
 #define pfn_pte(pfn,pgprot) mk_pte_phys(__pa((pfn) << PAGE_SHIFT),(pgprot))
 #define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
 #define pte_page(x) pfn_to_page(pte_pfn(x))
@@ -1729,11 +1616,9 @@ static inline int has_transparent_hugepage(void)
  *  0000000000111111111122222222223333333333444444444455 5555 5 55566 66
  *  0123456789012345678901234567890123456789012345678901 2345 6 78901 23
  */
-#ifndef CONFIG_64BIT
-#define __SWP_OFFSET_MASK (~0UL >> 12)
-#else
+
 #define __SWP_OFFSET_MASK (~0UL >> 11)
-#endif
+
 static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
 {
 	pte_t pte;

arch/s390/include/asm/processor.h

@@ -19,7 +19,6 @@
 #define _CIF_ASCE		(1<<CIF_ASCE)
 #define _CIF_NOHZ_DELAY		(1<<CIF_NOHZ_DELAY)
 
-
 #ifndef __ASSEMBLY__
 
 #include <linux/linkage.h>
@@ -66,13 +65,6 @@ extern void execve_tail(void);
 /*
  * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit.
  */
-#ifndef CONFIG_64BIT
-
-#define TASK_SIZE		(1UL << 31)
-#define TASK_MAX_SIZE		(1UL << 31)
-#define TASK_UNMAPPED_BASE	(1UL << 30)
-
-#else /* CONFIG_64BIT */
 
 #define TASK_SIZE_OF(tsk)	((tsk)->mm->context.asce_limit)
 #define TASK_UNMAPPED_BASE	(test_thread_flag(TIF_31BIT) ? \
@@ -80,15 +72,8 @@ extern void execve_tail(void);
 #define TASK_SIZE		TASK_SIZE_OF(current)
 #define TASK_MAX_SIZE		(1UL << 53)
 
-#endif /* CONFIG_64BIT */
-
-#ifndef CONFIG_64BIT
-#define STACK_TOP		(1UL << 31)
-#define STACK_TOP_MAX		(1UL << 31)
-#else /* CONFIG_64BIT */
 #define STACK_TOP		(1UL << (test_thread_flag(TIF_31BIT) ? 31:42))
 #define STACK_TOP_MAX		(1UL << 42)
-#endif /* CONFIG_64BIT */
 
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 
@@ -115,10 +100,8 @@ struct thread_struct {
 	/* cpu runtime instrumentation */
 	struct runtime_instr_cb *ri_cb;
 	int ri_signum;
-#ifdef CONFIG_64BIT
 	unsigned char trap_tdb[256];	/* Transaction abort diagnose block */
 	__vector128 *vxrs;		/* Vector register save area */
-#endif
 };
 
 /* Flag to disable transactions. */
@@ -181,11 +164,7 @@ struct task_struct;
 struct mm_struct;
 struct seq_file;
 
-#ifdef CONFIG_64BIT
-extern void show_cacheinfo(struct seq_file *m);
-#else
-static inline void show_cacheinfo(struct seq_file *m) { }
-#endif
+void show_cacheinfo(struct seq_file *m);
 
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
@@ -229,11 +208,7 @@ static inline void psw_set_key(unsigned int key)
  */
 static inline void __load_psw(psw_t psw)
 {
-#ifndef CONFIG_64BIT
-	asm volatile("lpsw  %0" : : "Q" (psw) : "cc");
-#else
 	asm volatile("lpswe %0" : : "Q" (psw) : "cc");
-#endif
 }
 
 /*
@@ -247,22 +222,12 @@ static inline void __load_psw_mask (unsigned long mask)
 
 	psw.mask = mask;
 
-#ifndef CONFIG_64BIT
-	asm volatile(
-		"	basr	%0,0\n"
-		"0:	ahi	%0,1f-0b\n"
-		"	st	%0,%O1+4(%R1)\n"
-		"	lpsw	%1\n"
-		"1:"
-		: "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc");
-#else /* CONFIG_64BIT */
 	asm volatile(
 		"	larl	%0,1f\n"
 		"	stg	%0,%O1+8(%R1)\n"
 		"	lpswe	%1\n"
 		"1:"
 		: "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc");
-#endif /* CONFIG_64BIT */
 }
 
 /*
@@ -270,20 +235,12 @@ static inline void __load_psw_mask (unsigned long mask)
  */
 static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc)
 {
-#ifndef CONFIG_64BIT
-	if (psw.addr & PSW_ADDR_AMODE)
-		/* 31 bit mode */
-		return (psw.addr - ilc) | PSW_ADDR_AMODE;
-	/* 24 bit mode */
-	return (psw.addr - ilc) & ((1UL << 24) - 1);
-#else
 	unsigned long mask;
 
 	mask = (psw.mask & PSW_MASK_EA) ? -1UL :
 	       (psw.mask & PSW_MASK_BA) ? (1UL << 31) - 1 :
 					  (1UL << 24) - 1;
 	return (psw.addr - ilc) & mask;
-#endif
 }
 
 /*
@@ -305,26 +262,6 @@ static inline void __noreturn disabled_wait(unsigned long code)
          * Store status and then load disabled wait psw,
          * the processor is dead afterwards
          */
-#ifndef CONFIG_64BIT
-	asm volatile(
-		"	stctl	0,0,0(%2)\n"
-		"	ni	0(%2),0xef\n"	/* switch off protection */
-		"	lctl	0,0,0(%2)\n"
-		"	stpt	0xd8\n"		/* store timer */
-		"	stckc	0xe0\n"		/* store clock comparator */
-		"	stpx	0x108\n"	/* store prefix register */
-		"	stam	0,15,0x120\n"	/* store access registers */
-		"	std	0,0x160\n"	/* store f0 */
-		"	std	2,0x168\n"	/* store f2 */
-		"	std	4,0x170\n"	/* store f4 */
-		"	std	6,0x178\n"	/* store f6 */
-		"	stm	0,15,0x180\n"	/* store general registers */
-		"	stctl	0,15,0x1c0\n"	/* store control registers */
-		"	oi	0x1c0,0x10\n"	/* fake protection bit */
-		"	lpsw	0(%1)"
-		: "=m" (ctl_buf)
-		: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc");
-#else /* CONFIG_64BIT */
 	asm volatile(
 		"	stctg	0,0,0(%2)\n"
 		"	ni	4(%2),0xef\n"	/* switch off protection */
@@ -357,7 +294,6 @@ static inline void __noreturn disabled_wait(unsigned long code)
 		"	lpswe	0(%1)"
 		: "=m" (ctl_buf)
 		: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0", "1");
-#endif /* CONFIG_64BIT */
 	while (1);
 }
 

arch/s390/include/asm/ptrace.h

@@ -40,12 +40,8 @@ struct psw_bits {
 	unsigned long long ri	: 1; /* Runtime Instrumentation */
 	unsigned long long	: 6;
 	unsigned long long eaba : 2; /* Addressing Mode */
-#ifdef CONFIG_64BIT
 	unsigned long long	: 31;
 	unsigned long long ia	: 64;/* Instruction Address */
-#else
-	unsigned long long ia	: 31;/* Instruction Address */
-#endif
 };
 
 enum {

arch/s390/include/asm/qdio.h

@@ -211,11 +211,6 @@ struct qdio_buffer_element {
 	u8 scount;
 	u8 sflags;
 	u32 length;
-#ifdef CONFIG_32BIT
-	/* private: */
-	void *res2;
-	/* public: */
-#endif
 	void *addr;
 } __attribute__ ((packed, aligned(16)));
 
@@ -232,11 +227,6 @@ struct qdio_buffer {
  * @sbal: absolute SBAL address
  */
 struct sl_element {
-#ifdef CONFIG_32BIT
-	/* private: */
-	unsigned long reserved;
-	/* public: */
-#endif
 	unsigned long sbal;
 } __attribute__ ((packed));
 

arch/s390/include/asm/runtime_instr.h

@@ -72,27 +72,19 @@ static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)
 
 static inline void save_ri_cb(struct runtime_instr_cb *cb_prev)
 {
-#ifdef CONFIG_64BIT
 	if (cb_prev)
 		store_runtime_instr_cb(cb_prev);
-#endif
 }
 
 static inline void restore_ri_cb(struct runtime_instr_cb *cb_next,
 				 struct runtime_instr_cb *cb_prev)
 {
-#ifdef CONFIG_64BIT
 	if (cb_next)
 		load_runtime_instr_cb(cb_next);
 	else if (cb_prev)
 		load_runtime_instr_cb(&runtime_instr_empty_cb);
-#endif
 }
 
-#ifdef CONFIG_64BIT
-extern void exit_thread_runtime_instr(void);
-#else
-static inline void exit_thread_runtime_instr(void) { }
-#endif
+void exit_thread_runtime_instr(void);
 
 #endif /* _RUNTIME_INSTR_H */

arch/s390/include/asm/rwsem.h

@@ -39,17 +39,10 @@
 #error "please don't include asm/rwsem.h directly, use linux/rwsem.h instead"
 #endif
 
-#ifndef CONFIG_64BIT
-#define RWSEM_UNLOCKED_VALUE	0x00000000
-#define RWSEM_ACTIVE_BIAS	0x00000001
-#define RWSEM_ACTIVE_MASK	0x0000ffff
-#define RWSEM_WAITING_BIAS	(-0x00010000)
-#else /* CONFIG_64BIT */
 #define RWSEM_UNLOCKED_VALUE	0x0000000000000000L
 #define RWSEM_ACTIVE_BIAS	0x0000000000000001L
 #define RWSEM_ACTIVE_MASK	0x00000000ffffffffL
 #define RWSEM_WAITING_BIAS	(-0x0000000100000000L)
-#endif /* CONFIG_64BIT */
 #define RWSEM_ACTIVE_READ_BIAS	RWSEM_ACTIVE_BIAS
 #define RWSEM_ACTIVE_WRITE_BIAS	(RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
 
@@ -61,19 +54,11 @@ static inline void __down_read(struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ahi	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	aghi	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
 		: "cc", "memory");
@@ -89,15 +74,6 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	ltr	%1,%0\n"
-		"	jm	1f\n"
-		"	ahi	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b\n"
-		"1:"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	ltgr	%1,%0\n"
 		"	jm	1f\n"
@@ -105,7 +81,6 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
 		"	csg	%0,%1,%2\n"
 		"	jl	0b\n"
 		"1:"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
 		: "cc", "memory");
@@ -121,19 +96,11 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
 
 	tmp = RWSEM_ACTIVE_WRITE_BIAS;
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	a	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	ag	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "m" (tmp)
 		: "cc", "memory");
@@ -154,19 +121,11 @@ static inline int __down_write_trylock(struct rw_semaphore *sem)
 	signed long old;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%1\n"
-		"0:	ltr	%0,%0\n"
-		"	jnz	1f\n"
-		"	cs	%0,%3,%1\n"
-		"	jl	0b\n"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%1\n"
 		"0:	ltgr	%0,%0\n"
 		"	jnz	1f\n"
 		"	csg	%0,%3,%1\n"
 		"	jl	0b\n"
-#endif /* CONFIG_64BIT */
 		"1:"
 		: "=&d" (old), "=Q" (sem->count)
 		: "Q" (sem->count), "d" (RWSEM_ACTIVE_WRITE_BIAS)
@@ -182,19 +141,11 @@ static inline void __up_read(struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ahi	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	aghi	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "i" (-RWSEM_ACTIVE_READ_BIAS)
 		: "cc", "memory");
@@ -212,19 +163,11 @@ static inline void __up_write(struct rw_semaphore *sem)
 
 	tmp = -RWSEM_ACTIVE_WRITE_BIAS;
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	a	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	ag	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "m" (tmp)
 		: "cc", "memory");
@@ -242,19 +185,11 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
 
 	tmp = -RWSEM_WAITING_BIAS;
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	a	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	ag	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "m" (tmp)
 		: "cc", "memory");
@@ -270,19 +205,11 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ar	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	agr	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "d" (delta)
 		: "cc", "memory");
@@ -296,19 +223,11 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ar	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	agr	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "d" (delta)
 		: "cc", "memory");

arch/s390/include/asm/setup.h

@@ -15,19 +15,11 @@
 #include <asm/lowcore.h>
 #include <asm/types.h>
 
-#ifndef CONFIG_64BIT
-#define IPL_DEVICE        (*(unsigned long *)  (0x10404))
-#define INITRD_START      (*(unsigned long *)  (0x1040C))
-#define INITRD_SIZE       (*(unsigned long *)  (0x10414))
-#define OLDMEM_BASE	  (*(unsigned long *)  (0x1041C))
-#define OLDMEM_SIZE	  (*(unsigned long *)  (0x10424))
-#else /* CONFIG_64BIT */
 #define IPL_DEVICE        (*(unsigned long *)  (0x10400))
 #define INITRD_START      (*(unsigned long *)  (0x10408))
 #define INITRD_SIZE       (*(unsigned long *)  (0x10410))
 #define OLDMEM_BASE	  (*(unsigned long *)  (0x10418))
 #define OLDMEM_SIZE	  (*(unsigned long *)  (0x10420))
-#endif /* CONFIG_64BIT */
 #define COMMAND_LINE      ((char *)            (0x10480))
 
 extern int memory_end_set;
@@ -68,26 +60,8 @@ extern void detect_memory_memblock(void);
 #define MACHINE_HAS_PFMF	MACHINE_HAS_EDAT1
 #define MACHINE_HAS_HPAGE	MACHINE_HAS_EDAT1
 
-#ifndef CONFIG_64BIT
-#define MACHINE_HAS_IEEE	(S390_lowcore.machine_flags & MACHINE_FLAG_IEEE)
-#define MACHINE_HAS_CSP		(S390_lowcore.machine_flags & MACHINE_FLAG_CSP)
-#define MACHINE_HAS_IDTE	(0)
-#define MACHINE_HAS_DIAG44	(1)
-#define MACHINE_HAS_MVPG	(S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
-#define MACHINE_HAS_EDAT1	(0)
-#define MACHINE_HAS_EDAT2	(0)
-#define MACHINE_HAS_LPP		(0)
-#define MACHINE_HAS_TOPOLOGY	(0)
-#define MACHINE_HAS_TE		(0)
-#define MACHINE_HAS_TLB_LC	(0)
-#define MACHINE_HAS_VX		(0)
-#define MACHINE_HAS_CAD		(0)
-#else /* CONFIG_64BIT */
-#define MACHINE_HAS_IEEE	(1)
-#define MACHINE_HAS_CSP		(1)
 #define MACHINE_HAS_IDTE	(S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
 #define MACHINE_HAS_DIAG44	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
-#define MACHINE_HAS_MVPG	(1)
 #define MACHINE_HAS_EDAT1	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
 #define MACHINE_HAS_EDAT2	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
 #define MACHINE_HAS_LPP		(S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
@@ -96,7 +70,6 @@ extern void detect_memory_memblock(void);
 #define MACHINE_HAS_TLB_LC	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
 #define MACHINE_HAS_VX		(S390_lowcore.machine_flags & MACHINE_FLAG_VX)
 #define MACHINE_HAS_CAD		(S390_lowcore.machine_flags & MACHINE_FLAG_CAD)
-#endif /* CONFIG_64BIT */
 
 /*
  * Console mode. Override with conmode=
@@ -135,19 +108,11 @@ extern void (*_machine_power_off)(void);
 
 #else /* __ASSEMBLY__ */
 
-#ifndef CONFIG_64BIT
-#define IPL_DEVICE        0x10404
-#define INITRD_START      0x1040C
-#define INITRD_SIZE       0x10414
-#define OLDMEM_BASE	  0x1041C
-#define OLDMEM_SIZE	  0x10424
-#else /* CONFIG_64BIT */
 #define IPL_DEVICE        0x10400
 #define INITRD_START      0x10408
 #define INITRD_SIZE       0x10410
 #define OLDMEM_BASE	  0x10418
 #define OLDMEM_SIZE	  0x10420
-#endif /* CONFIG_64BIT */
 #define COMMAND_LINE      0x10480
 
 #endif /* __ASSEMBLY__ */

arch/s390/include/asm/sfp-util.h

@@ -51,7 +51,6 @@
 	wl = __wl;					\
 })
 
-#ifdef CONFIG_64BIT
 #define udiv_qrnnd(q, r, n1, n0, d)			\
   do { unsigned long __n;				\
        unsigned int __r, __d;				\
@@ -60,15 +59,6 @@
     (q) = __n / __d;					\
     (r) = __n % __d;					\
   } while (0)
-#else
-#define udiv_qrnnd(q, r, n1, n0, d)			\
-  do { unsigned int __r;				\
-    (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));		\
-    (r) = __r;						\
-  } while (0)
-extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
-				   unsigned int , unsigned int);
-#endif
 
 #define UDIV_NEEDS_NORMALIZATION 0
 

arch/s390/include/asm/sparsemem.h

@@ -1,16 +1,7 @@
 #ifndef _ASM_S390_SPARSEMEM_H
 #define _ASM_S390_SPARSEMEM_H
 
-#ifdef CONFIG_64BIT
-
 #define SECTION_SIZE_BITS	28
 #define MAX_PHYSMEM_BITS	46
 
-#else
-
-#define SECTION_SIZE_BITS	25
-#define MAX_PHYSMEM_BITS	31
-
-#endif /* CONFIG_64BIT */
-
 #endif /* _ASM_S390_SPARSEMEM_H */

arch/s390/include/asm/switch_to.h

@@ -18,9 +18,6 @@ static inline int test_fp_ctl(u32 fpc)
 	u32 orig_fpc;
 	int rc;
 
-	if (!MACHINE_HAS_IEEE)
-		return 0;
-
 	asm volatile(
 		"	efpc    %1\n"
 		"	sfpc	%2\n"
@@ -35,9 +32,6 @@ static inline int test_fp_ctl(u32 fpc)
 
 static inline void save_fp_ctl(u32 *fpc)
 {
-	if (!MACHINE_HAS_IEEE)
-		return;
-
 	asm volatile(
 		"       stfpc   %0\n"
 		: "+Q" (*fpc));
@@ -47,9 +41,6 @@ static inline int restore_fp_ctl(u32 *fpc)
 {
 	int rc;
 
-	if (!MACHINE_HAS_IEEE)
-		return 0;
-
 	asm volatile(
 		"	lfpc    %1\n"
 		"0:	la	%0,0\n"
@@ -65,8 +56,6 @@ static inline void save_fp_regs(freg_t *fprs)
 	asm volatile("std 2,%0" : "=Q" (fprs[2]));
 	asm volatile("std 4,%0" : "=Q" (fprs[4]));
 	asm volatile("std 6,%0" : "=Q" (fprs[6]));
-	if (!MACHINE_HAS_IEEE)
-		return;
 	asm volatile("std 1,%0" : "=Q" (fprs[1]));
 	asm volatile("std 3,%0" : "=Q" (fprs[3]));
 	asm volatile("std 5,%0" : "=Q" (fprs[5]));
@@ -87,8 +76,6 @@ static inline void restore_fp_regs(freg_t *fprs)
 	asm volatile("ld 2,%0" : : "Q" (fprs[2]));
 	asm volatile("ld 4,%0" : : "Q" (fprs[4]));
 	asm volatile("ld 6,%0" : : "Q" (fprs[6]));
-	if (!MACHINE_HAS_IEEE)
-		return;
 	asm volatile("ld 1,%0" : : "Q" (fprs[1]));
 	asm volatile("ld 3,%0" : : "Q" (fprs[3]));
 	asm volatile("ld 5,%0" : : "Q" (fprs[5]));
@@ -140,22 +127,18 @@ static inline void restore_vx_regs(__vector128 *vxrs)
 
 static inline void save_fp_vx_regs(struct task_struct *task)
 {
-#ifdef CONFIG_64BIT
 	if (task->thread.vxrs)
 		save_vx_regs(task->thread.vxrs);
 	else
-#endif
-	save_fp_regs(task->thread.fp_regs.fprs);
+		save_fp_regs(task->thread.fp_regs.fprs);
 }
 
 static inline void restore_fp_vx_regs(struct task_struct *task)
 {
-#ifdef CONFIG_64BIT
 	if (task->thread.vxrs)
 		restore_vx_regs(task->thread.vxrs);
 	else
-#endif
-	restore_fp_regs(task->thread.fp_regs.fprs);
+		restore_fp_regs(task->thread.fp_regs.fprs);
 }
 
 static inline void save_access_regs(unsigned int *acrs)

arch/s390/include/asm/syscall.h

@@ -95,6 +95,6 @@ static inline int syscall_get_arch(void)
 	if (test_tsk_thread_flag(current, TIF_31BIT))
 		return AUDIT_ARCH_S390;
 #endif
-	return sizeof(long) == 8 ? AUDIT_ARCH_S390X : AUDIT_ARCH_S390;
+	return AUDIT_ARCH_S390X;
 }
 #endif	/* _ASM_SYSCALL_H */

arch/s390/include/asm/thread_info.h

@@ -10,13 +10,8 @@
 /*
  * Size of kernel stack for each process
  */
-#ifndef CONFIG_64BIT
-#define THREAD_ORDER 1
-#define ASYNC_ORDER  1
-#else /* CONFIG_64BIT */
 #define THREAD_ORDER 2
 #define ASYNC_ORDER  2
-#endif /* CONFIG_64BIT */
 
 #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
 #define ASYNC_SIZE  (PAGE_SIZE << ASYNC_ORDER)
@@ -66,6 +61,8 @@ static inline struct thread_info *current_thread_info(void)
 	return (struct thread_info *) S390_lowcore.thread_info;
 }
 
+void arch_release_task_struct(struct task_struct *tsk);
+
 #define THREAD_SIZE_ORDER THREAD_ORDER
 
 #endif
@@ -99,10 +96,6 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_31BIT		(1<<TIF_31BIT)
 #define _TIF_SINGLE_STEP	(1<<TIF_SINGLE_STEP)
 
-#ifdef CONFIG_64BIT
 #define is_32bit_task()		(test_thread_flag(TIF_31BIT))
-#else
-#define is_32bit_task()		(1)
-#endif
 
 #endif /* _ASM_THREAD_INFO_H */

arch/s390/include/asm/tlb.h

@@ -118,12 +118,10 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
 static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
 				unsigned long address)
 {
-#ifdef CONFIG_64BIT
 	if (tlb->mm->context.asce_limit <= (1UL << 31))
 		return;
 	pgtable_pmd_page_dtor(virt_to_page(pmd));
 	tlb_remove_table(tlb, pmd);
-#endif
 }
 
 /*
@@ -136,11 +134,9 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
 static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
 				unsigned long address)
 {
-#ifdef CONFIG_64BIT
 	if (tlb->mm->context.asce_limit <= (1UL << 42))
 		return;
 	tlb_remove_table(tlb, pud);
-#endif
 }
 
 #define tlb_start_vma(tlb, vma)			do { } while (0)

arch/s390/include/asm/tlbflush.h

@@ -49,13 +49,6 @@ static inline void __tlb_flush_global(void)
 	register unsigned long reg4 asm("4");
 	long dummy;
 
-#ifndef CONFIG_64BIT
-	if (!MACHINE_HAS_CSP) {
-		smp_ptlb_all();
-		return;
-	}
-#endif /* CONFIG_64BIT */
-
 	dummy = 0;
 	reg2 = reg3 = 0;
 	reg4 = ((unsigned long) &dummy) + 1;

arch/s390/include/asm/types.h

@@ -8,21 +8,4 @@
 
 #include <uapi/asm/types.h>
 
-/*
- * These aren't exported outside the kernel to avoid name space clashes
- */
-
-#ifndef __ASSEMBLY__
-
-#ifndef CONFIG_64BIT
-typedef union {
-	unsigned long long pair;
-	struct {
-		unsigned long even;
-		unsigned long odd;
-	} subreg;
-} register_pair;
-
-#endif /* ! CONFIG_64BIT   */
-#endif /* __ASSEMBLY__  */
 #endif /* _S390_TYPES_H */

arch/s390/include/asm/uaccess.h

@@ -372,5 +372,6 @@ static inline unsigned long __must_check clear_user(void __user *to, unsigned lo
 }
 
 int copy_to_user_real(void __user *dest, void *src, unsigned long count);
+void s390_kernel_write(void *dst, const void *src, size_t size);
 
 #endif /* __S390_UACCESS_H */

arch/s390/include/asm/unistd.h

@@ -9,11 +9,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#ifndef CONFIG_64BIT
-#define __IGNORE_select
-#else
 #define __IGNORE_time
-#endif
 
 /* Ignore NUMA system calls. Not wired up on s390. */
 #define __IGNORE_mbind
@@ -43,10 +39,6 @@
 #define __ARCH_WANT_SYS_OLDUMOUNT
 #define __ARCH_WANT_SYS_SIGPENDING
 #define __ARCH_WANT_SYS_SIGPROCMASK
-# ifndef CONFIG_64BIT
-#   define __ARCH_WANT_STAT64
-#   define __ARCH_WANT_SYS_TIME
-# endif
 # ifdef CONFIG_COMPAT
 #   define __ARCH_WANT_COMPAT_SYS_TIME
 # endif

arch/s390/include/asm/vdso.h

@@ -42,10 +42,8 @@ struct vdso_per_cpu_data {
 
 extern struct vdso_data *vdso_data;
 
-#ifdef CONFIG_64BIT
 int vdso_alloc_per_cpu(struct _lowcore *lowcore);
 void vdso_free_per_cpu(struct _lowcore *lowcore);
-#endif
 
 #endif /* __ASSEMBLY__ */
 #endif /* __S390_VDSO_H__ */

arch/s390/kernel/Makefile

@@ -26,25 +26,21 @@ CFLAGS_dumpstack.o	+= -fno-optimize-sibling-calls
 #
 CFLAGS_ptrace.o		+= -DUTS_MACHINE='"$(UTS_MACHINE)"'
 
-CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
+CFLAGS_sysinfo.o += -w
 
 obj-y	:= traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
 obj-y	+= processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
 obj-y	+= debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o
 obj-y	+= sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
-obj-y	+= dumpstack.o
+obj-y	+= runtime_instr.o cache.o dumpstack.o
+obj-y	+= entry.o reipl.o relocate_kernel.o
 
-obj-y	+= $(if $(CONFIG_64BIT),entry64.o,entry.o)
-obj-y	+= $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
-obj-y	+= $(if $(CONFIG_64BIT),relocate_kernel64.o,relocate_kernel.o)
-
-extra-y				+= head.o vmlinux.lds
-extra-y				+= $(if $(CONFIG_64BIT),head64.o,head31.o)
+extra-y				+= head.o head64.o vmlinux.lds
 
 obj-$(CONFIG_MODULES)		+= s390_ksyms.o module.o
 obj-$(CONFIG_SMP)		+= smp.o
 obj-$(CONFIG_SCHED_BOOK)	+= topology.o
-obj-$(CONFIG_HIBERNATION)	+= suspend.o swsusp_asm64.o
+obj-$(CONFIG_HIBERNATION)	+= suspend.o swsusp.o
 obj-$(CONFIG_AUDIT)		+= audit.o
 compat-obj-$(CONFIG_AUDIT)	+= compat_audit.o
 obj-$(CONFIG_COMPAT)		+= compat_linux.o compat_signal.o
@@ -56,13 +52,9 @@ obj-$(CONFIG_FUNCTION_TRACER)	+= mcount.o ftrace.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
 obj-$(CONFIG_UPROBES)		+= uprobes.o
 
-ifdef CONFIG_64BIT
-obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o perf_cpum_cf.o perf_cpum_sf.o \
-						perf_cpum_cf_events.o
-obj-y				+= runtime_instr.o cache.o
-endif
+obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o perf_cpum_cf.o perf_cpum_sf.o
+obj-$(CONFIG_PERF_EVENTS)	+= perf_cpum_cf_events.o
 
 # vdso
-obj-$(CONFIG_64BIT)		+= vdso64/
-obj-$(CONFIG_32BIT)		+= vdso32/
+obj-y				+= vdso64/
 obj-$(CONFIG_COMPAT)		+= vdso32/

arch/s390/kernel/asm-offsets.c

@@ -166,9 +166,6 @@ int main(void)
 	DEFINE(__LC_FPREGS_SAVE_AREA, offsetof(struct _lowcore, floating_pt_save_area));
 	DEFINE(__LC_GPREGS_SAVE_AREA, offsetof(struct _lowcore, gpregs_save_area));
 	DEFINE(__LC_CREGS_SAVE_AREA, offsetof(struct _lowcore, cregs_save_area));
-#ifdef CONFIG_32BIT
-	DEFINE(SAVE_AREA_BASE, offsetof(struct _lowcore, extended_save_area_addr));
-#else /* CONFIG_32BIT */
 	DEFINE(__LC_DATA_EXC_CODE, offsetof(struct _lowcore, data_exc_code));
 	DEFINE(__LC_MCCK_FAIL_STOR_ADDR, offsetof(struct _lowcore, failing_storage_address));
 	DEFINE(__LC_VX_SAVE_AREA_ADDR, offsetof(struct _lowcore, vector_save_area_addr));
@@ -184,6 +181,5 @@ int main(void)
 	DEFINE(__GMAP_ASCE, offsetof(struct gmap, asce));
 	DEFINE(__SIE_PROG0C, offsetof(struct kvm_s390_sie_block, prog0c));
 	DEFINE(__SIE_PROG20, offsetof(struct kvm_s390_sie_block, prog20));
-#endif /* CONFIG_32BIT */
 	return 0;
 }

arch/s390/kernel/base.S

@@ -11,8 +11,6 @@
 #include <asm/ptrace.h>
 #include <asm/sigp.h>
 
-#ifdef CONFIG_64BIT
-
 ENTRY(s390_base_mcck_handler)
 	basr	%r13,0
 0:	lg	%r15,__LC_PANIC_STACK	# load panic stack
@@ -131,77 +129,3 @@ ENTRY(diag308_reset)
 .Lfpctl:
 	.long	0
 	.previous
-
-#else /* CONFIG_64BIT */
-
-ENTRY(s390_base_mcck_handler)
-	basr	%r13,0
-0:	l	%r15,__LC_PANIC_STACK	# load panic stack
-	ahi	%r15,-STACK_FRAME_OVERHEAD
-	l	%r1,2f-0b(%r13)
-	l	%r1,0(%r1)
-	ltr	%r1,%r1
-	jz	1f
-	basr	%r14,%r1
-1:	lm	%r0,%r15,__LC_GPREGS_SAVE_AREA
-	lpsw	__LC_MCK_OLD_PSW
-
-2:	.long	s390_base_mcck_handler_fn
-
-	.section .bss
-	.align 4
-	.globl	s390_base_mcck_handler_fn
-s390_base_mcck_handler_fn:
-	.long	0
-	.previous
-
-ENTRY(s390_base_ext_handler)
-	stm	%r0,%r15,__LC_SAVE_AREA_ASYNC
-	basr	%r13,0
-0:	ahi	%r15,-STACK_FRAME_OVERHEAD
-	l	%r1,2f-0b(%r13)
-	l	%r1,0(%r1)
-	ltr	%r1,%r1
-	jz	1f
-	basr	%r14,%r1
-1:	lm	%r0,%r15,__LC_SAVE_AREA_ASYNC
-	ni	__LC_EXT_OLD_PSW+1,0xfd	# clear wait state bit
-	lpsw	__LC_EXT_OLD_PSW
-
-2:	.long	s390_base_ext_handler_fn
-
-	.section .bss
-	.align 4
-	.globl	s390_base_ext_handler_fn
-s390_base_ext_handler_fn:
-	.long	0
-	.previous
-
-ENTRY(s390_base_pgm_handler)
-	stm	%r0,%r15,__LC_SAVE_AREA_SYNC
-	basr	%r13,0
-0:	ahi	%r15,-STACK_FRAME_OVERHEAD
-	l	%r1,2f-0b(%r13)
-	l	%r1,0(%r1)
-	ltr	%r1,%r1
-	jz	1f
-	basr	%r14,%r1
-	lm	%r0,%r15,__LC_SAVE_AREA_SYNC
-	lpsw	__LC_PGM_OLD_PSW
-
-1:	lpsw	disabled_wait_psw-0b(%r13)
-
-2:	.long	s390_base_pgm_handler_fn
-
-disabled_wait_psw:
-	.align	8
-	.long	0x000a0000,0x00000000 + s390_base_pgm_handler
-
-	.section .bss
-	.align 4
-	.globl	s390_base_pgm_handler_fn
-s390_base_pgm_handler_fn:
-	.long	0
-	.previous
-
-#endif /* CONFIG_64BIT */

arch/s390/kernel/cache.c

@@ -70,6 +70,8 @@ void show_cacheinfo(struct seq_file *m)
 	struct cacheinfo *cache;
 	int idx;
 
+	if (!test_facility(34))
+		return;
 	get_online_cpus();
 	this_cpu_ci = get_cpu_cacheinfo(cpumask_any(cpu_online_mask));
 	for (idx = 0; idx < this_cpu_ci->num_leaves; idx++) {
@@ -159,6 +161,8 @@ int populate_cache_leaves(unsigned int cpu)
 	union cache_topology ct;
 	enum cache_type ctype;
 
+	if (!test_facility(34))
+		return -EOPNOTSUPP;
 	ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
 	for (idx = 0, level = 0; level < this_cpu_ci->num_levels &&
 	     idx < this_cpu_ci->num_leaves; idx++, level++) {

arch/s390/kernel/cpcmd.c

@@ -27,13 +27,9 @@ static int diag8_noresponse(int cmdlen)
 	register unsigned long reg3 asm ("3") = cmdlen;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	diag	%1,%0,0x8\n"
-#else /* CONFIG_64BIT */
 		"	sam31\n"
 		"	diag	%1,%0,0x8\n"
 		"	sam64\n"
-#endif /* CONFIG_64BIT */
 		: "+d" (reg3) : "d" (reg2) : "cc");
 	return reg3;
 }
@@ -46,17 +42,11 @@ static int diag8_response(int cmdlen, char *response, int *rlen)
 	register unsigned long reg5 asm ("5") = *rlen;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	diag	%2,%0,0x8\n"
-		"	brc	8,1f\n"
-		"	ar	%1,%4\n"
-#else /* CONFIG_64BIT */
 		"	sam31\n"
 		"	diag	%2,%0,0x8\n"
 		"	sam64\n"
 		"	brc	8,1f\n"
 		"	agr	%1,%4\n"
-#endif /* CONFIG_64BIT */
 		"1:\n"
 		: "+d" (reg4), "+d" (reg5)
 		: "d" (reg2), "d" (reg3), "d" (*rlen) : "cc");

arch/s390/kernel/diag.c

@@ -18,13 +18,9 @@ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
 	int rc = 0;
 
 	asm volatile(
-#ifdef CONFIG_64BIT
 		"   sam31\n"
 		"   diag    %2,2,0x14\n"
 		"   sam64\n"
-#else
-		"   diag    %2,2,0x14\n"
-#endif
 		"   ipm     %0\n"
 		"   srl     %0,28\n"
 		: "=d" (rc), "+d" (_ry2)
@@ -52,7 +48,6 @@ int diag210(struct diag210 *addr)
 	spin_lock_irqsave(&diag210_lock, flags);
 	diag210_tmp = *addr;
 
-#ifdef CONFIG_64BIT
 	asm volatile(
 		"	lhi	%0,-1\n"
 		"	sam31\n"
@@ -62,16 +57,6 @@ int diag210(struct diag210 *addr)
 		"1:	sam64\n"
 		EX_TABLE(0b, 1b)
 		: "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
-#else
-	asm volatile(
-		"	lhi	%0,-1\n"
-		"	diag	%1,0,0x210\n"
-		"0:	ipm	%0\n"
-		"	srl	%0,28\n"
-		"1:\n"
-		EX_TABLE(0b, 1b)
-		: "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
-#endif
 
 	*addr = diag210_tmp;
 	spin_unlock_irqrestore(&diag210_lock, flags);

arch/s390/kernel/dis.c

@@ -32,12 +32,6 @@
 #include <asm/debug.h>
 #include <asm/irq.h>
 
-#ifndef CONFIG_64BIT
-#define ONELONG "%08lx: "
-#else /* CONFIG_64BIT */
-#define ONELONG "%016lx: "
-#endif /* CONFIG_64BIT */
-
 enum {
 	UNUSED,	/* Indicates the end of the operand list */
 	R_8,	/* GPR starting at position 8 */
@@ -536,12 +530,10 @@ static char *long_insn_name[] = {
 };
 
 static struct s390_insn opcode[] = {
-#ifdef CONFIG_64BIT
 	{ "bprp", 0xc5, INSTR_MII_UPI },
 	{ "bpp", 0xc7, INSTR_SMI_U0RDP },
 	{ "trtr", 0xd0, INSTR_SS_L0RDRD },
 	{ "lmd", 0xef, INSTR_SS_RRRDRD3 },
-#endif
 	{ "spm", 0x04, INSTR_RR_R0 },
 	{ "balr", 0x05, INSTR_RR_RR },
 	{ "bctr", 0x06, INSTR_RR_RR },
@@ -725,11 +717,9 @@ static struct s390_insn opcode[] = {
 };
 
 static struct s390_insn opcode_01[] = {
-#ifdef CONFIG_64BIT
 	{ "ptff", 0x04, INSTR_E },
 	{ "pfpo", 0x0a, INSTR_E },
 	{ "sam64", 0x0e, INSTR_E },
-#endif
 	{ "pr", 0x01, INSTR_E },
 	{ "upt", 0x02, INSTR_E },
 	{ "sckpf", 0x07, INSTR_E },
@@ -741,7 +731,6 @@ static struct s390_insn opcode_01[] = {
 };
 
 static struct s390_insn opcode_a5[] = {
-#ifdef CONFIG_64BIT
 	{ "iihh", 0x00, INSTR_RI_RU },
 	{ "iihl", 0x01, INSTR_RI_RU },
 	{ "iilh", 0x02, INSTR_RI_RU },
@@ -758,12 +747,10 @@ static struct s390_insn opcode_a5[] = {
 	{ "llihl", 0x0d, INSTR_RI_RU },
 	{ "llilh", 0x0e, INSTR_RI_RU },
 	{ "llill", 0x0f, INSTR_RI_RU },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_a7[] = {
-#ifdef CONFIG_64BIT
 	{ "tmhh", 0x02, INSTR_RI_RU },
 	{ "tmhl", 0x03, INSTR_RI_RU },
 	{ "brctg", 0x07, INSTR_RI_RP },
@@ -771,7 +758,6 @@ static struct s390_insn opcode_a7[] = {
 	{ "aghi", 0x0b, INSTR_RI_RI },
 	{ "mghi", 0x0d, INSTR_RI_RI },
 	{ "cghi", 0x0f, INSTR_RI_RI },
-#endif
 	{ "tmlh", 0x00, INSTR_RI_RU },
 	{ "tmll", 0x01, INSTR_RI_RU },
 	{ "brc", 0x04, INSTR_RI_UP },
@@ -785,18 +771,15 @@ static struct s390_insn opcode_a7[] = {
 };
 
 static struct s390_insn opcode_aa[] = {
-#ifdef CONFIG_64BIT
 	{ { 0, LONG_INSN_RINEXT }, 0x00, INSTR_RI_RI },
 	{ "rion", 0x01, INSTR_RI_RI },
 	{ "tric", 0x02, INSTR_RI_RI },
 	{ "rioff", 0x03, INSTR_RI_RI },
 	{ { 0, LONG_INSN_RIEMIT }, 0x04, INSTR_RI_RI },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_b2[] = {
-#ifdef CONFIG_64BIT
 	{ "stckf", 0x7c, INSTR_S_RD },
 	{ "lpp", 0x80, INSTR_S_RD },
 	{ "lcctl", 0x84, INSTR_S_RD },
@@ -819,7 +802,6 @@ static struct s390_insn opcode_b2[] = {
 	{ "tend", 0xf8, INSTR_S_00 },
 	{ "niai", 0xfa, INSTR_IE_UU },
 	{ { 0, LONG_INSN_TABORT }, 0xfc, INSTR_S_RD },
-#endif
 	{ "stidp", 0x02, INSTR_S_RD },
 	{ "sck", 0x04, INSTR_S_RD },
 	{ "stck", 0x05, INSTR_S_RD },
@@ -908,7 +890,6 @@ static struct s390_insn opcode_b2[] = {
 };
 
 static struct s390_insn opcode_b3[] = {
-#ifdef CONFIG_64BIT
 	{ "maylr", 0x38, INSTR_RRF_F0FF },
 	{ "mylr", 0x39, INSTR_RRF_F0FF },
 	{ "mayr", 0x3a, INSTR_RRF_F0FF },
@@ -996,7 +977,6 @@ static struct s390_insn opcode_b3[] = {
 	{ "qaxtr", 0xfd, INSTR_RRF_FUFF },
 	{ "iextr", 0xfe, INSTR_RRF_F0FR },
 	{ "rrxtr", 0xff, INSTR_RRF_FFRU },
-#endif
 	{ "lpebr", 0x00, INSTR_RRE_FF },
 	{ "lnebr", 0x01, INSTR_RRE_FF },
 	{ "ltebr", 0x02, INSTR_RRE_FF },
@@ -1091,7 +1071,6 @@ static struct s390_insn opcode_b3[] = {
 };
 
 static struct s390_insn opcode_b9[] = {
-#ifdef CONFIG_64BIT
 	{ "lpgr", 0x00, INSTR_RRE_RR },
 	{ "lngr", 0x01, INSTR_RRE_RR },
 	{ "ltgr", 0x02, INSTR_RRE_RR },
@@ -1204,7 +1183,6 @@ static struct s390_insn opcode_b9[] = {
 	{ "srk", 0xf9, INSTR_RRF_R0RR2 },
 	{ "alrk", 0xfa, INSTR_RRF_R0RR2 },
 	{ "slrk", 0xfb, INSTR_RRF_R0RR2 },
-#endif
 	{ "kmac", 0x1e, INSTR_RRE_RR },
 	{ "lrvr", 0x1f, INSTR_RRE_RR },
 	{ "km", 0x2e, INSTR_RRE_RR },
@@ -1224,7 +1202,6 @@ static struct s390_insn opcode_b9[] = {
 };
 
 static struct s390_insn opcode_c0[] = {
-#ifdef CONFIG_64BIT
 	{ "lgfi", 0x01, INSTR_RIL_RI },
 	{ "xihf", 0x06, INSTR_RIL_RU },
 	{ "xilf", 0x07, INSTR_RIL_RU },
@@ -1236,7 +1213,6 @@ static struct s390_insn opcode_c0[] = {
 	{ "oilf", 0x0d, INSTR_RIL_RU },
 	{ "llihf", 0x0e, INSTR_RIL_RU },
 	{ "llilf", 0x0f, INSTR_RIL_RU },
-#endif
 	{ "larl", 0x00, INSTR_RIL_RP },
 	{ "brcl", 0x04, INSTR_RIL_UP },
 	{ "brasl", 0x05, INSTR_RIL_RP },
@@ -1244,7 +1220,6 @@ static struct s390_insn opcode_c0[] = {
 };
 
 static struct s390_insn opcode_c2[] = {
-#ifdef CONFIG_64BIT
 	{ "msgfi", 0x00, INSTR_RIL_RI },
 	{ "msfi", 0x01, INSTR_RIL_RI },
 	{ "slgfi", 0x04, INSTR_RIL_RU },
@@ -1257,12 +1232,10 @@ static struct s390_insn opcode_c2[] = {
 	{ "cfi", 0x0d, INSTR_RIL_RI },
 	{ "clgfi", 0x0e, INSTR_RIL_RU },
 	{ "clfi", 0x0f, INSTR_RIL_RU },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_c4[] = {
-#ifdef CONFIG_64BIT
 	{ "llhrl", 0x02, INSTR_RIL_RP },
 	{ "lghrl", 0x04, INSTR_RIL_RP },
 	{ "lhrl", 0x05, INSTR_RIL_RP },
@@ -1274,12 +1247,10 @@ static struct s390_insn opcode_c4[] = {
 	{ "lrl", 0x0d, INSTR_RIL_RP },
 	{ { 0, LONG_INSN_LLGFRL }, 0x0e, INSTR_RIL_RP },
 	{ "strl", 0x0f, INSTR_RIL_RP },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_c6[] = {
-#ifdef CONFIG_64BIT
 	{ "exrl", 0x00, INSTR_RIL_RP },
 	{ "pfdrl", 0x02, INSTR_RIL_UP },
 	{ "cghrl", 0x04, INSTR_RIL_RP },
@@ -1292,35 +1263,29 @@ static struct s390_insn opcode_c6[] = {
 	{ "crl", 0x0d, INSTR_RIL_RP },
 	{ { 0, LONG_INSN_CLGFRL }, 0x0e, INSTR_RIL_RP },
 	{ "clrl", 0x0f, INSTR_RIL_RP },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_c8[] = {
-#ifdef CONFIG_64BIT
 	{ "mvcos", 0x00, INSTR_SSF_RRDRD },
 	{ "ectg", 0x01, INSTR_SSF_RRDRD },
 	{ "csst", 0x02, INSTR_SSF_RRDRD },
 	{ "lpd", 0x04, INSTR_SSF_RRDRD2 },
 	{ "lpdg", 0x05, INSTR_SSF_RRDRD2 },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_cc[] = {
-#ifdef CONFIG_64BIT
 	{ "brcth", 0x06, INSTR_RIL_RP },
 	{ "aih", 0x08, INSTR_RIL_RI },
 	{ "alsih", 0x0a, INSTR_RIL_RI },
 	{ { 0, LONG_INSN_ALSIHN }, 0x0b, INSTR_RIL_RI },
 	{ "cih", 0x0d, INSTR_RIL_RI },
 	{ "clih", 0x0f, INSTR_RIL_RI },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_e3[] = {
-#ifdef CONFIG_64BIT
 	{ "ltg", 0x02, INSTR_RXY_RRRD },
 	{ "lrag", 0x03, INSTR_RXY_RRRD },
 	{ "lg", 0x04, INSTR_RXY_RRRD },
@@ -1414,7 +1379,6 @@ static struct s390_insn opcode_e3[] = {
 	{ "clhf", 0xcf, INSTR_RXY_RRRD },
 	{ { 0, LONG_INSN_MPCIFC }, 0xd0, INSTR_RXY_RRRD },
 	{ { 0, LONG_INSN_STPCIFC }, 0xd4, INSTR_RXY_RRRD },
-#endif
 	{ "lrv", 0x1e, INSTR_RXY_RRRD },
 	{ "lrvh", 0x1f, INSTR_RXY_RRRD },
 	{ "strv", 0x3e, INSTR_RXY_RRRD },
@@ -1426,7 +1390,6 @@ static struct s390_insn opcode_e3[] = {
 };
 
 static struct s390_insn opcode_e5[] = {
-#ifdef CONFIG_64BIT
 	{ "strag", 0x02, INSTR_SSE_RDRD },
 	{ "mvhhi", 0x44, INSTR_SIL_RDI },
 	{ "mvghi", 0x48, INSTR_SIL_RDI },
@@ -1439,7 +1402,6 @@ static struct s390_insn opcode_e5[] = {
 	{ { 0, LONG_INSN_CLFHSI }, 0x5d, INSTR_SIL_RDU },
 	{ { 0, LONG_INSN_TBEGIN }, 0x60, INSTR_SIL_RDU },
 	{ { 0, LONG_INSN_TBEGINC }, 0x61, INSTR_SIL_RDU },
-#endif
 	{ "lasp", 0x00, INSTR_SSE_RDRD },
 	{ "tprot", 0x01, INSTR_SSE_RDRD },
 	{ "mvcsk", 0x0e, INSTR_SSE_RDRD },
@@ -1448,7 +1410,6 @@ static struct s390_insn opcode_e5[] = {
 };
 
 static struct s390_insn opcode_e7[] = {
-#ifdef CONFIG_64BIT
 	{ "lcbb", 0x27, INSTR_RXE_RRRDM },
 	{ "vgef", 0x13, INSTR_VRV_VVRDM },
 	{ "vgeg", 0x12, INSTR_VRV_VVRDM },
@@ -1588,11 +1549,9 @@ static struct s390_insn opcode_e7[] = {
 	{ "vfsq", 0xce, INSTR_VRR_VV000MM },
 	{ "vfs", 0xe2, INSTR_VRR_VVV00MM },
 	{ "vftci", 0x4a, INSTR_VRI_VVIMM },
-#endif
 };
 
 static struct s390_insn opcode_eb[] = {
-#ifdef CONFIG_64BIT
 	{ "lmg", 0x04, INSTR_RSY_RRRD },
 	{ "srag", 0x0a, INSTR_RSY_RRRD },
 	{ "slag", 0x0b, INSTR_RSY_RRRD },
@@ -1659,7 +1618,6 @@ static struct s390_insn opcode_eb[] = {
 	{ "stric", 0x61, INSTR_RSY_RDRM },
 	{ "mric", 0x62, INSTR_RSY_RDRM },
 	{ { 0, LONG_INSN_STCCTM }, 0x17, INSTR_RSY_RMRD },
-#endif
 	{ "rll", 0x1d, INSTR_RSY_RRRD },
 	{ "mvclu", 0x8e, INSTR_RSY_RRRD },
 	{ "tp", 0xc0, INSTR_RSL_R0RD },
@@ -1667,7 +1625,6 @@ static struct s390_insn opcode_eb[] = {
 };
 
 static struct s390_insn opcode_ec[] = {
-#ifdef CONFIG_64BIT
 	{ "brxhg", 0x44, INSTR_RIE_RRP },
 	{ "brxlg", 0x45, INSTR_RIE_RRP },
 	{ { 0, LONG_INSN_RISBLG }, 0x51, INSTR_RIE_RRUUU },
@@ -1701,12 +1658,10 @@ static struct s390_insn opcode_ec[] = {
 	{ "clgib", 0xfd, INSTR_RIS_RURDU },
 	{ "cib", 0xfe, INSTR_RIS_RURDI },
 	{ "clib", 0xff, INSTR_RIS_RURDU },
-#endif
 	{ "", 0, INSTR_INVALID }
 };
 
 static struct s390_insn opcode_ed[] = {
-#ifdef CONFIG_64BIT
 	{ "mayl", 0x38, INSTR_RXF_FRRDF },
 	{ "myl", 0x39, INSTR_RXF_FRRDF },
 	{ "may", 0x3a, INSTR_RXF_FRRDF },
@@ -1731,7 +1686,6 @@ static struct s390_insn opcode_ed[] = {
 	{ "czxt", 0xa9, INSTR_RSL_LRDFU },
 	{ "cdzt", 0xaa, INSTR_RSL_LRDFU },
 	{ "cxzt", 0xab, INSTR_RSL_LRDFU },
-#endif
 	{ "ldeb", 0x04, INSTR_RXE_FRRD },
 	{ "lxdb", 0x05, INSTR_RXE_FRRD },
 	{ "lxeb", 0x06, INSTR_RXE_FRRD },
@@ -2051,7 +2005,7 @@ void show_code(struct pt_regs *regs)
 		else
 			*ptr++ = ' ';
 		addr = regs->psw.addr + start - 32;
-		ptr += sprintf(ptr, ONELONG, addr);
+		ptr += sprintf(ptr, "%016lx: ", addr);
 		if (start + opsize >= end)
 			break;
 		for (i = 0; i < opsize; i++)

arch/s390/kernel/dumpstack.c

@@ -18,16 +18,6 @@
 #include <asm/dis.h>
 #include <asm/ipl.h>
 
-#ifndef CONFIG_64BIT
-#define LONG "%08lx "
-#define FOURLONG "%08lx %08lx %08lx %08lx\n"
-static int kstack_depth_to_print = 12;
-#else /* CONFIG_64BIT */
-#define LONG "%016lx "
-#define FOURLONG "%016lx %016lx %016lx %016lx\n"
-static int kstack_depth_to_print = 20;
-#endif /* CONFIG_64BIT */
-
 /*
  * For show_trace we have tree different stack to consider:
  *   - the panic stack which is used if the kernel stack has overflown
@@ -115,12 +105,12 @@ void show_stack(struct task_struct *task, unsigned long *sp)
 	else
 		stack = sp;
 
-	for (i = 0; i < kstack_depth_to_print; i++) {
+	for (i = 0; i < 20; i++) {
 		if (((addr_t) stack & (THREAD_SIZE-1)) == 0)
 			break;
 		if ((i * sizeof(long) % 32) == 0)
 			printk("%s       ", i == 0 ? "" : "\n");
-		printk(LONG, *stack++);
+		printk("%016lx ", *stack++);
 	}
 	printk("\n");
 	show_trace(task, sp);
@@ -128,10 +118,8 @@ void show_stack(struct task_struct *task, unsigned long *sp)
 
 static void show_last_breaking_event(struct pt_regs *regs)
 {
-#ifdef CONFIG_64BIT
 	printk("Last Breaking-Event-Address:\n");
 	printk(" [<%016lx>] %pSR\n", regs->args[0], (void *)regs->args[0]);
-#endif
 }
 
 static inline int mask_bits(struct pt_regs *regs, unsigned long bits)
@@ -155,16 +143,14 @@ void show_registers(struct pt_regs *regs)
 	       mask_bits(regs, PSW_MASK_MCHECK), mask_bits(regs, PSW_MASK_WAIT),
 	       mask_bits(regs, PSW_MASK_PSTATE), mask_bits(regs, PSW_MASK_ASC),
 	       mask_bits(regs, PSW_MASK_CC), mask_bits(regs, PSW_MASK_PM));
-#ifdef CONFIG_64BIT
 	printk(" EA:%x", mask_bits(regs, PSW_MASK_EA | PSW_MASK_BA));
-#endif
-	printk("\n%s GPRS: " FOURLONG, mode,
+	printk("\n%s GPRS: %016lx %016lx %016lx %016lx\n", mode,
 	       regs->gprs[0], regs->gprs[1], regs->gprs[2], regs->gprs[3]);
-	printk("           " FOURLONG,
+	printk("           %016lx %016lx %016lx %016lx\n",
 	       regs->gprs[4], regs->gprs[5], regs->gprs[6], regs->gprs[7]);
-	printk("           " FOURLONG,
+	printk("           %016lx %016lx %016lx %016lx\n",
 	       regs->gprs[8], regs->gprs[9], regs->gprs[10], regs->gprs[11]);
-	printk("           " FOURLONG,
+	printk("           %016lx %016lx %016lx %016lx\n",
 	       regs->gprs[12], regs->gprs[13], regs->gprs[14], regs->gprs[15]);
 	show_code(regs);
 }

arch/s390/kernel/early.c

@@ -64,7 +64,6 @@ asm(
 	"	.align	4\n"
 	"	.type	savesys_ipl_nss, @function\n"
 	"savesys_ipl_nss:\n"
-#ifdef CONFIG_64BIT
 	"	stmg	6,15,48(15)\n"
 	"	lgr	14,3\n"
 	"	sam31\n"
@@ -72,13 +71,6 @@ asm(
 	"	sam64\n"
 	"	lgr	2,14\n"
 	"	lmg	6,15,48(15)\n"
-#else
-	"	stm	6,15,24(15)\n"
-	"	lr	14,3\n"
-	"	diag	2,14,0x8\n"
-	"	lr	2,14\n"
-	"	lm	6,15,24(15)\n"
-#endif
 	"	br	14\n"
 	"	.size	savesys_ipl_nss, .-savesys_ipl_nss\n"
 	"	.previous\n");
@@ -240,7 +232,6 @@ static noinline __init void detect_machine_type(void)
 
 static __init void setup_topology(void)
 {
-#ifdef CONFIG_64BIT
 	int max_mnest;
 
 	if (!test_facility(11))
@@ -251,7 +242,6 @@ static __init void setup_topology(void)
 			break;
 	}
 	topology_max_mnest = max_mnest;
-#endif
 }
 
 static void early_pgm_check_handler(void)
@@ -290,58 +280,6 @@ static noinline __init void setup_facility_list(void)
 	      ARRAY_SIZE(S390_lowcore.stfle_fac_list));
 }
 
-static __init void detect_mvpg(void)
-{
-#ifndef CONFIG_64BIT
-	int rc;
-
-	asm volatile(
-		"	la	0,0\n"
-		"	mvpg	%2,%2\n"
-		"0:	la	%0,0\n"
-		"1:\n"
-		EX_TABLE(0b,1b)
-		: "=d" (rc) : "0" (-EOPNOTSUPP), "a" (0) : "memory", "cc", "0");
-	if (!rc)
-		S390_lowcore.machine_flags |= MACHINE_FLAG_MVPG;
-#endif
-}
-
-static __init void detect_ieee(void)
-{
-#ifndef CONFIG_64BIT
-	int rc, tmp;
-
-	asm volatile(
-		"	efpc	%1,0\n"
-		"0:	la	%0,0\n"
-		"1:\n"
-		EX_TABLE(0b,1b)
-		: "=d" (rc), "=d" (tmp): "0" (-EOPNOTSUPP) : "cc");
-	if (!rc)
-		S390_lowcore.machine_flags |= MACHINE_FLAG_IEEE;
-#endif
-}
-
-static __init void detect_csp(void)
-{
-#ifndef CONFIG_64BIT
-	int rc;
-
-	asm volatile(
-		"	la	0,0\n"
-		"	la	1,0\n"
-		"	la	2,4\n"
-		"	csp	0,2\n"
-		"0:	la	%0,0\n"
-		"1:\n"
-		EX_TABLE(0b,1b)
-		: "=d" (rc) : "0" (-EOPNOTSUPP) : "cc", "0", "1", "2");
-	if (!rc)
-		S390_lowcore.machine_flags |= MACHINE_FLAG_CSP;
-#endif
-}
-
 static __init void detect_diag9c(void)
 {
 	unsigned int cpu_address;
@@ -360,7 +298,6 @@ static __init void detect_diag9c(void)
 
 static __init void detect_diag44(void)
 {
-#ifdef CONFIG_64BIT
 	int rc;
 
 	asm volatile(
@@ -371,12 +308,10 @@ static __init void detect_diag44(void)
 		: "=d" (rc) : "0" (-EOPNOTSUPP) : "cc");
 	if (!rc)
 		S390_lowcore.machine_flags |= MACHINE_FLAG_DIAG44;
-#endif
 }
 
 static __init void detect_machine_facilities(void)
 {
-#ifdef CONFIG_64BIT
 	if (test_facility(8)) {
 		S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT1;
 		__ctl_set_bit(0, 23);
@@ -393,7 +328,6 @@ static __init void detect_machine_facilities(void)
 		S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC;
 	if (test_facility(129))
 		S390_lowcore.machine_flags |= MACHINE_FLAG_VX;
-#endif
 }
 
 static int __init cad_setup(char *str)
@@ -501,9 +435,6 @@ void __init startup_init(void)
 	ipl_update_parameters();
 	setup_boot_command_line();
 	create_kernel_nss();
-	detect_mvpg();
-	detect_ieee();
-	detect_csp();
 	detect_diag9c();
 	detect_diag44();
 	detect_machine_facilities();

arch/s390/kernel/entry.S

@@ -22,27 +22,28 @@
 #include <asm/irq.h>
 
 __PT_R0      =	__PT_GPRS
-__PT_R1      =	__PT_GPRS + 4
-__PT_R2      =	__PT_GPRS + 8
-__PT_R3      =	__PT_GPRS + 12
-__PT_R4      =	__PT_GPRS + 16
-__PT_R5      =	__PT_GPRS + 20
-__PT_R6      =	__PT_GPRS + 24
-__PT_R7      =	__PT_GPRS + 28
-__PT_R8      =	__PT_GPRS + 32
-__PT_R9      =	__PT_GPRS + 36
-__PT_R10     =	__PT_GPRS + 40
-__PT_R11     =	__PT_GPRS + 44
-__PT_R12     =	__PT_GPRS + 48
-__PT_R13     =	__PT_GPRS + 524
-__PT_R14     =	__PT_GPRS + 56
-__PT_R15     =	__PT_GPRS + 60
+__PT_R1      =	__PT_GPRS + 8
+__PT_R2      =	__PT_GPRS + 16
+__PT_R3      =	__PT_GPRS + 24
+__PT_R4      =	__PT_GPRS + 32
+__PT_R5      =	__PT_GPRS + 40
+__PT_R6      =	__PT_GPRS + 48
+__PT_R7      =	__PT_GPRS + 56
+__PT_R8      =	__PT_GPRS + 64
+__PT_R9      =	__PT_GPRS + 72
+__PT_R10     =	__PT_GPRS + 80
+__PT_R11     =	__PT_GPRS + 88
+__PT_R12     =	__PT_GPRS + 96
+__PT_R13     =	__PT_GPRS + 104
+__PT_R14     =	__PT_GPRS + 112
+__PT_R15     =	__PT_GPRS + 120
 
 STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
 STACK_SIZE  = 1 << STACK_SHIFT
-STACK_INIT  = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
+STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
 
-_TIF_WORK	= (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED)
+_TIF_WORK	= (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
+		   _TIF_UPROBE)
 _TIF_TRACE	= (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
 		   _TIF_SYSCALL_TRACEPOINT)
 _CIF_WORK	= (_CIF_MCCK_PENDING | _CIF_ASCE)
@@ -53,16 +54,14 @@ _PIF_WORK	= (_PIF_PER_TRAP)
 	.macro	TRACE_IRQS_ON
 #ifdef CONFIG_TRACE_IRQFLAGS
 	basr	%r2,%r0
-	l	%r1,BASED(.Lc_hardirqs_on)
-	basr	%r14,%r1		# call trace_hardirqs_on_caller
+	brasl	%r14,trace_hardirqs_on_caller
 #endif
 	.endm
 
 	.macro	TRACE_IRQS_OFF
 #ifdef CONFIG_TRACE_IRQFLAGS
 	basr	%r2,%r0
-	l	%r1,BASED(.Lc_hardirqs_off)
-	basr	%r14,%r1		# call trace_hardirqs_off_caller
+	brasl	%r14,trace_hardirqs_off_caller
 #endif
 	.endm
 
@@ -70,73 +69,104 @@ _PIF_WORK	= (_PIF_PER_TRAP)
 #ifdef CONFIG_LOCKDEP
 	tm	__PT_PSW+1(%r11),0x01	# returning to user ?
 	jz	.+10
-	l	%r1,BASED(.Lc_lockdep_sys_exit)
-	basr	%r14,%r1		# call lockdep_sys_exit
+	brasl	%r14,lockdep_sys_exit
+#endif
+	.endm
+
+	.macro LPP newpp
+#if IS_ENABLED(CONFIG_KVM)
+	tm	__LC_MACHINE_FLAGS+6,0x20	# MACHINE_FLAG_LPP
+	jz	.+8
+	.insn	s,0xb2800000,\newpp
+#endif
+	.endm
+
+	.macro	HANDLE_SIE_INTERCEPT scratch,reason
+#if IS_ENABLED(CONFIG_KVM)
+	tmhh	%r8,0x0001		# interrupting from user ?
+	jnz	.+62
+	lgr	\scratch,%r9
+	slg	\scratch,BASED(.Lsie_critical)
+	clg	\scratch,BASED(.Lsie_critical_length)
+	.if	\reason==1
+	# Some program interrupts are suppressing (e.g. protection).
+	# We must also check the instruction after SIE in that case.
+	# do_protection_exception will rewind to .Lrewind_pad
+	jh	.+42
+	.else
+	jhe	.+42
+	.endif
+	lg	%r14,__SF_EMPTY(%r15)		# get control block pointer
+	LPP	__SF_EMPTY+16(%r15)		# set host id
+	ni	__SIE_PROG0C+3(%r14),0xfe	# no longer in SIE
+	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
+	larl	%r9,sie_exit			# skip forward to sie_exit
+	mvi	__SF_EMPTY+31(%r15),\reason	# set exit reason
 #endif
 	.endm
 
 	.macro	CHECK_STACK stacksize,savearea
 #ifdef CONFIG_CHECK_STACK
 	tml	%r15,\stacksize - CONFIG_STACK_GUARD
-	la	%r14,\savearea
+	lghi	%r14,\savearea
 	jz	stack_overflow
 #endif
 	.endm
 
 	.macro	SWITCH_ASYNC savearea,stack,shift
-	tmh	%r8,0x0001		# interrupting from user ?
+	tmhh	%r8,0x0001		# interrupting from user ?
 	jnz	1f
-	lr	%r14,%r9
-	sl	%r14,BASED(.Lc_critical_start)
-	cl	%r14,BASED(.Lc_critical_length)
+	lgr	%r14,%r9
+	slg	%r14,BASED(.Lcritical_start)
+	clg	%r14,BASED(.Lcritical_length)
 	jhe	0f
-	la	%r11,\savearea		# inside critical section, do cleanup
-	bras	%r14,cleanup_critical
-	tmh	%r8,0x0001		# retest problem state after cleanup
+	lghi	%r11,\savearea		# inside critical section, do cleanup
+	brasl	%r14,cleanup_critical
+	tmhh	%r8,0x0001		# retest problem state after cleanup
 	jnz	1f
-0:	l	%r14,\stack		# are we already on the target stack?
-	slr	%r14,%r15
-	sra	%r14,\shift
+0:	lg	%r14,\stack		# are we already on the target stack?
+	slgr	%r14,%r15
+	srag	%r14,%r14,\shift
 	jnz	1f
 	CHECK_STACK 1<<\shift,\savearea
-	ahi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
+	aghi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
 	j	2f
-1:	l	%r15,\stack		# load target stack
+1:	lg	%r15,\stack		# load target stack
 2:	la	%r11,STACK_FRAME_OVERHEAD(%r15)
 	.endm
 
-	.macro	ADD64 high,low,timer
-	al	\high,\timer
-	al	\low,4+\timer
-	brc	12,.+8
-	ahi	\high,1
-	.endm
-
-	.macro	SUB64 high,low,timer
-	sl	\high,\timer
-	sl	\low,4+\timer
-	brc	3,.+8
-	ahi	\high,-1
+	.macro UPDATE_VTIME scratch,enter_timer
+	lg	\scratch,__LC_EXIT_TIMER
+	slg	\scratch,\enter_timer
+	alg	\scratch,__LC_USER_TIMER
+	stg	\scratch,__LC_USER_TIMER
+	lg	\scratch,__LC_LAST_UPDATE_TIMER
+	slg	\scratch,__LC_EXIT_TIMER
+	alg	\scratch,__LC_SYSTEM_TIMER
+	stg	\scratch,__LC_SYSTEM_TIMER
+	mvc	__LC_LAST_UPDATE_TIMER(8),\enter_timer
 	.endm
 
-	.macro	UPDATE_VTIME high,low,enter_timer
-	lm	\high,\low,__LC_EXIT_TIMER
-	SUB64	\high,\low,\enter_timer
-	ADD64	\high,\low,__LC_USER_TIMER
-	stm	\high,\low,__LC_USER_TIMER
-	lm	\high,\low,__LC_LAST_UPDATE_TIMER
-	SUB64	\high,\low,__LC_EXIT_TIMER
-	ADD64	\high,\low,__LC_SYSTEM_TIMER
-	stm	\high,\low,__LC_SYSTEM_TIMER
-	mvc	__LC_LAST_UPDATE_TIMER(8),\enter_timer
+	.macro	LAST_BREAK scratch
+	srag	\scratch,%r10,23
+	jz	.+10
+	stg	%r10,__TI_last_break(%r12)
 	.endm
 
 	.macro REENABLE_IRQS
-	st	%r8,__LC_RETURN_PSW
+	stg	%r8,__LC_RETURN_PSW
 	ni	__LC_RETURN_PSW,0xbf
 	ssm	__LC_RETURN_PSW
 	.endm
 
+	.macro STCK savearea
+#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
+	.insn	s,0xb27c0000,\savearea		# store clock fast
+#else
+	.insn	s,0xb2050000,\savearea		# store clock
+#endif
+	.endm
+
 	.section .kprobes.text, "ax"
 
 /*
@@ -147,19 +177,19 @@ _PIF_WORK	= (_PIF_PER_TRAP)
  *  gpr2 = prev
  */
 ENTRY(__switch_to)
-	stm	%r6,%r15,__SF_GPRS(%r15)	# store gprs of prev task
-	st	%r15,__THREAD_ksp(%r2)		# store kernel stack of prev
-	l	%r4,__THREAD_info(%r2)		# get thread_info of prev
-	l	%r5,__THREAD_info(%r3)		# get thread_info of next
-	lr	%r15,%r5
-	ahi	%r15,STACK_INIT			# end of kernel stack of next
-	st	%r3,__LC_CURRENT		# store task struct of next
-	st	%r5,__LC_THREAD_INFO		# store thread info of next
-	st	%r15,__LC_KERNEL_STACK		# store end of kernel stack
+	stmg	%r6,%r15,__SF_GPRS(%r15)	# store gprs of prev task
+	stg	%r15,__THREAD_ksp(%r2)		# store kernel stack of prev
+	lg	%r4,__THREAD_info(%r2)		# get thread_info of prev
+	lg	%r5,__THREAD_info(%r3)		# get thread_info of next
+	lgr	%r15,%r5
+	aghi	%r15,STACK_INIT			# end of kernel stack of next
+	stg	%r3,__LC_CURRENT		# store task struct of next
+	stg	%r5,__LC_THREAD_INFO		# store thread info of next
+	stg	%r15,__LC_KERNEL_STACK		# store end of kernel stack
 	lctl	%c4,%c4,__TASK_pid(%r3)		# load pid to control reg. 4
-	mvc	__LC_CURRENT_PID(4,%r0),__TASK_pid(%r3)	# store pid of next
-	l	%r15,__THREAD_ksp(%r3)		# load kernel stack of next
-	lm	%r6,%r15,__SF_GPRS(%r15)	# load gprs of next task
+	mvc	__LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
+	lg	%r15,__THREAD_ksp(%r3)		# load kernel stack of next
+	lmg	%r6,%r15,__SF_GPRS(%r15)	# load gprs of next task
 	br	%r14
 
 .L__critical_start:
@@ -170,75 +200,83 @@ ENTRY(__switch_to)
 
 ENTRY(system_call)
 	stpt	__LC_SYNC_ENTER_TIMER
-.Lsysc_stm:
-	stm	%r8,%r15,__LC_SAVE_AREA_SYNC
-	l	%r12,__LC_THREAD_INFO
-	l	%r13,__LC_SVC_NEW_PSW+4
-	lhi	%r14,_PIF_SYSCALL
+.Lsysc_stmg:
+	stmg	%r8,%r15,__LC_SAVE_AREA_SYNC
+	lg	%r10,__LC_LAST_BREAK
+	lg	%r12,__LC_THREAD_INFO
+	lghi	%r14,_PIF_SYSCALL
 .Lsysc_per:
-	l	%r15,__LC_KERNEL_STACK
+	lg	%r15,__LC_KERNEL_STACK
 	la	%r11,STACK_FRAME_OVERHEAD(%r15)	# pointer to pt_regs
 .Lsysc_vtime:
-	UPDATE_VTIME %r8,%r9,__LC_SYNC_ENTER_TIMER
-	stm	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
-	mvc	__PT_PSW(8,%r11),__LC_SVC_OLD_PSW
+	UPDATE_VTIME %r13,__LC_SYNC_ENTER_TIMER
+	LAST_BREAK %r13
+	stmg	%r0,%r7,__PT_R0(%r11)
+	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
+	mvc	__PT_PSW(16,%r11),__LC_SVC_OLD_PSW
 	mvc	__PT_INT_CODE(4,%r11),__LC_SVC_ILC
-	st	%r14,__PT_FLAGS(%r11)
+	stg	%r14,__PT_FLAGS(%r11)
 .Lsysc_do_svc:
-	l	%r10,__TI_sysc_table(%r12)	# 31 bit system call table
-	lh	%r8,__PT_INT_CODE+2(%r11)
-	sla	%r8,2				# shift and test for svc0
+	lg	%r10,__TI_sysc_table(%r12)	# address of system call table
+	llgh	%r8,__PT_INT_CODE+2(%r11)
+	slag	%r8,%r8,2			# shift and test for svc 0
 	jnz	.Lsysc_nr_ok
 	# svc 0: system call number in %r1
-	cl	%r1,BASED(.Lnr_syscalls)
+	llgfr	%r1,%r1				# clear high word in r1
+	cghi	%r1,NR_syscalls
 	jnl	.Lsysc_nr_ok
 	sth	%r1,__PT_INT_CODE+2(%r11)
-	lr	%r8,%r1
-	sla	%r8,2
+	slag	%r8,%r1,2
 .Lsysc_nr_ok:
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-	st	%r2,__PT_ORIG_GPR2(%r11)
-	st	%r7,STACK_FRAME_OVERHEAD(%r15)
-	l	%r9,0(%r8,%r10)			# get system call addr.
-	tm	__TI_flags+3(%r12),_TIF_TRACE
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+	stg	%r2,__PT_ORIG_GPR2(%r11)
+	stg	%r7,STACK_FRAME_OVERHEAD(%r15)
+	lgf	%r9,0(%r8,%r10)			# get system call add.
+	tm	__TI_flags+7(%r12),_TIF_TRACE
 	jnz	.Lsysc_tracesys
 	basr	%r14,%r9			# call sys_xxxx
-	st	%r2,__PT_R2(%r11)		# store return value
+	stg	%r2,__PT_R2(%r11)		# store return value
 
 .Lsysc_return:
 	LOCKDEP_SYS_EXIT
 .Lsysc_tif:
 	tm	__PT_PSW+1(%r11),0x01		# returning to user ?
 	jno	.Lsysc_restore
-	tm	__PT_FLAGS+3(%r11),_PIF_WORK
+	tm	__PT_FLAGS+7(%r11),_PIF_WORK
 	jnz	.Lsysc_work
-	tm	__TI_flags+3(%r12),_TIF_WORK
-	jnz	.Lsysc_work			# check for thread work
-	tm	__LC_CPU_FLAGS+3,_CIF_WORK
+	tm	__TI_flags+7(%r12),_TIF_WORK
+	jnz	.Lsysc_work			# check for work
+	tm	__LC_CPU_FLAGS+7,_CIF_WORK
 	jnz	.Lsysc_work
 .Lsysc_restore:
-	mvc	__LC_RETURN_PSW(8),__PT_PSW(%r11)
+	lg	%r14,__LC_VDSO_PER_CPU
+	lmg	%r0,%r10,__PT_R0(%r11)
+	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r11)
 	stpt	__LC_EXIT_TIMER
-	lm	%r0,%r15,__PT_R0(%r11)
-	lpsw	__LC_RETURN_PSW
+	mvc	__VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
+	lmg	%r11,%r15,__PT_R11(%r11)
+	lpswe	__LC_RETURN_PSW
 .Lsysc_done:
 
 #
 # One of the work bits is on. Find out which one.
 #
 .Lsysc_work:
-	tm	__LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
+	tm	__LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
 	jo	.Lsysc_mcck_pending
-	tm	__TI_flags+3(%r12),_TIF_NEED_RESCHED
+	tm	__TI_flags+7(%r12),_TIF_NEED_RESCHED
 	jo	.Lsysc_reschedule
-	tm	__PT_FLAGS+3(%r11),_PIF_PER_TRAP
+#ifdef CONFIG_UPROBES
+	tm	__TI_flags+7(%r12),_TIF_UPROBE
+	jo	.Lsysc_uprobe_notify
+#endif
+	tm	__PT_FLAGS+7(%r11),_PIF_PER_TRAP
 	jo	.Lsysc_singlestep
-	tm	__TI_flags+3(%r12),_TIF_SIGPENDING
+	tm	__TI_flags+7(%r12),_TIF_SIGPENDING
 	jo	.Lsysc_sigpending
-	tm	__TI_flags+3(%r12),_TIF_NOTIFY_RESUME
+	tm	__TI_flags+7(%r12),_TIF_NOTIFY_RESUME
 	jo	.Lsysc_notify_resume
-	tm	__LC_CPU_FLAGS+3,_CIF_ASCE
+	tm	__LC_CPU_FLAGS+7,_CIF_ASCE
 	jo	.Lsysc_uaccess
 	j	.Lsysc_return		# beware of critical section cleanup
 
@@ -246,109 +284,109 @@ ENTRY(system_call)
 # _TIF_NEED_RESCHED is set, call schedule
 #
 .Lsysc_reschedule:
-	l	%r1,BASED(.Lc_schedule)
-	la	%r14,BASED(.Lsysc_return)
-	br	%r1			# call schedule
+	larl	%r14,.Lsysc_return
+	jg	schedule
 
 #
 # _CIF_MCCK_PENDING is set, call handler
 #
 .Lsysc_mcck_pending:
-	l	%r1,BASED(.Lc_handle_mcck)
-	la	%r14,BASED(.Lsysc_return)
-	br	%r1			# TIF bit will be cleared by handler
+	larl	%r14,.Lsysc_return
+	jg	s390_handle_mcck	# TIF bit will be cleared by handler
 
 #
 # _CIF_ASCE is set, load user space asce
 #
 .Lsysc_uaccess:
-	ni	__LC_CPU_FLAGS+3,255-_CIF_ASCE
-	lctl	%c1,%c1,__LC_USER_ASCE	# load primary asce
+	ni	__LC_CPU_FLAGS+7,255-_CIF_ASCE
+	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
 	j	.Lsysc_return
 
 #
 # _TIF_SIGPENDING is set, call do_signal
 #
 .Lsysc_sigpending:
-	lr	%r2,%r11		# pass pointer to pt_regs
-	l	%r1,BASED(.Lc_do_signal)
-	basr	%r14,%r1		# call do_signal
-	tm	__PT_FLAGS+3(%r11),_PIF_SYSCALL
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	brasl	%r14,do_signal
+	tm	__PT_FLAGS+7(%r11),_PIF_SYSCALL
 	jno	.Lsysc_return
-	lm	%r2,%r7,__PT_R2(%r11)	# load svc arguments
-	l	%r10,__TI_sysc_table(%r12)	# 31 bit system call table
-	xr	%r8,%r8			# svc 0 returns -ENOSYS
-	clc	__PT_INT_CODE+2(2,%r11),BASED(.Lnr_syscalls+2)
+	lmg	%r2,%r7,__PT_R2(%r11)	# load svc arguments
+	lg	%r10,__TI_sysc_table(%r12)	# address of system call table
+	lghi	%r8,0			# svc 0 returns -ENOSYS
+	llgh	%r1,__PT_INT_CODE+2(%r11)	# load new svc number
+	cghi	%r1,NR_syscalls
 	jnl	.Lsysc_nr_ok		# invalid svc number -> do svc 0
-	lh	%r8,__PT_INT_CODE+2(%r11)	# load new svc number
-	sla	%r8,2
+	slag	%r8,%r1,2
 	j	.Lsysc_nr_ok		# restart svc
 
 #
 # _TIF_NOTIFY_RESUME is set, call do_notify_resume
 #
 .Lsysc_notify_resume:
-	lr	%r2,%r11		# pass pointer to pt_regs
-	l	%r1,BASED(.Lc_do_notify_resume)
-	la	%r14,BASED(.Lsysc_return)
-	br	%r1			# call do_notify_resume
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	larl	%r14,.Lsysc_return
+	jg	do_notify_resume
+
+#
+# _TIF_UPROBE is set, call uprobe_notify_resume
+#
+#ifdef CONFIG_UPROBES
+.Lsysc_uprobe_notify:
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	larl	%r14,.Lsysc_return
+	jg	uprobe_notify_resume
+#endif
 
 #
 # _PIF_PER_TRAP is set, call do_per_trap
 #
 .Lsysc_singlestep:
-	ni	__PT_FLAGS+3(%r11),255-_PIF_PER_TRAP
-	lr	%r2,%r11		# pass pointer to pt_regs
-	l	%r1,BASED(.Lc_do_per_trap)
-	la	%r14,BASED(.Lsysc_return)
-	br	%r1			# call do_per_trap
+	ni	__PT_FLAGS+7(%r11),255-_PIF_PER_TRAP
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	larl	%r14,.Lsysc_return
+	jg	do_per_trap
 
 #
 # call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
 # and after the system call
 #
 .Lsysc_tracesys:
-	l	%r1,BASED(.Lc_trace_enter)
-	lr	%r2,%r11		# pass pointer to pt_regs
+	lgr	%r2,%r11		# pass pointer to pt_regs
 	la	%r3,0
-	xr	%r0,%r0
-	icm	%r0,3,__PT_INT_CODE+2(%r11)
-	st	%r0,__PT_R2(%r11)
-	basr	%r14,%r1		# call do_syscall_trace_enter
-	cl	%r2,BASED(.Lnr_syscalls)
-	jnl	.Lsysc_tracenogo
-	lr	%r8,%r2
-	sll	%r8,2
-	l	%r9,0(%r8,%r10)
+	llgh	%r0,__PT_INT_CODE+2(%r11)
+	stg	%r0,__PT_R2(%r11)
+	brasl	%r14,do_syscall_trace_enter
+	lghi	%r0,NR_syscalls
+	clgr	%r0,%r2
+	jnh	.Lsysc_tracenogo
+	sllg	%r8,%r2,2
+	lgf	%r9,0(%r8,%r10)
 .Lsysc_tracego:
-	lm	%r3,%r7,__PT_R3(%r11)
-	st	%r7,STACK_FRAME_OVERHEAD(%r15)
-	l	%r2,__PT_ORIG_GPR2(%r11)
+	lmg	%r3,%r7,__PT_R3(%r11)
+	stg	%r7,STACK_FRAME_OVERHEAD(%r15)
+	lg	%r2,__PT_ORIG_GPR2(%r11)
 	basr	%r14,%r9		# call sys_xxx
-	st	%r2,__PT_R2(%r11)	# store return value
+	stg	%r2,__PT_R2(%r11)	# store return value
 .Lsysc_tracenogo:
-	tm	__TI_flags+3(%r12),_TIF_TRACE
+	tm	__TI_flags+7(%r12),_TIF_TRACE
 	jz	.Lsysc_return
-	l	%r1,BASED(.Lc_trace_exit)
-	lr	%r2,%r11		# pass pointer to pt_regs
-	la	%r14,BASED(.Lsysc_return)
-	br	%r1			# call do_syscall_trace_exit
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	larl	%r14,.Lsysc_return
+	jg	do_syscall_trace_exit
 
 #
 # a new process exits the kernel with ret_from_fork
 #
 ENTRY(ret_from_fork)
 	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	l	%r12,__LC_THREAD_INFO
-	l	%r13,__LC_SVC_NEW_PSW+4
-	l	%r1,BASED(.Lc_schedule_tail)
-	basr	%r14,%r1		# call schedule_tail
+	lg	%r12,__LC_THREAD_INFO
+	brasl	%r14,schedule_tail
 	TRACE_IRQS_ON
 	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
 	tm	__PT_PSW+1(%r11),0x01	# forking a kernel thread ?
 	jne	.Lsysc_tracenogo
 	# it's a kernel thread
-	lm	%r9,%r10,__PT_R9(%r11)	# load gprs
+	lmg	%r9,%r10,__PT_R9(%r11)	# load gprs
 ENTRY(kernel_thread_starter)
 	la	%r2,0(%r10)
 	basr	%r14,%r9
@@ -360,46 +398,54 @@ ENTRY(kernel_thread_starter)
 
 ENTRY(pgm_check_handler)
 	stpt	__LC_SYNC_ENTER_TIMER
-	stm	%r8,%r15,__LC_SAVE_AREA_SYNC
-	l	%r12,__LC_THREAD_INFO
-	l	%r13,__LC_SVC_NEW_PSW+4
-	lm	%r8,%r9,__LC_PGM_OLD_PSW
-	tmh	%r8,0x0001		# test problem state bit
+	stmg	%r8,%r15,__LC_SAVE_AREA_SYNC
+	lg	%r10,__LC_LAST_BREAK
+	lg	%r12,__LC_THREAD_INFO
+	larl	%r13,system_call
+	lmg	%r8,%r9,__LC_PGM_OLD_PSW
+	HANDLE_SIE_INTERCEPT %r14,1
+	tmhh	%r8,0x0001		# test problem state bit
 	jnz	1f			# -> fault in user space
-	tmh	%r8,0x4000		# PER bit set in old PSW ?
+	tmhh	%r8,0x4000		# PER bit set in old PSW ?
 	jnz	0f			# -> enabled, can't be a double fault
 	tm	__LC_PGM_ILC+3,0x80	# check for per exception
 	jnz	.Lpgm_svcper		# -> single stepped svc
 0:	CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
-	ahi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
+	aghi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
 	j	2f
-1:	UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER
-	l	%r15,__LC_KERNEL_STACK
+1:	UPDATE_VTIME %r14,__LC_SYNC_ENTER_TIMER
+	LAST_BREAK %r14
+	lg	%r15,__LC_KERNEL_STACK
+	lg	%r14,__TI_task(%r12)
+	lghi	%r13,__LC_PGM_TDB
+	tm	__LC_PGM_ILC+2,0x02	# check for transaction abort
+	jz	2f
+	mvc	__THREAD_trap_tdb(256,%r14),0(%r13)
 2:	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	stm	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
-	stm	%r8,%r9,__PT_PSW(%r11)
+	stmg	%r0,%r7,__PT_R0(%r11)
+	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
+	stmg	%r8,%r9,__PT_PSW(%r11)
 	mvc	__PT_INT_CODE(4,%r11),__LC_PGM_ILC
-	mvc	__PT_INT_PARM_LONG(4,%r11),__LC_TRANS_EXC_CODE
-	xc	__PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
+	mvc	__PT_INT_PARM_LONG(8,%r11),__LC_TRANS_EXC_CODE
+	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
+	stg	%r10,__PT_ARGS(%r11)
 	tm	__LC_PGM_ILC+3,0x80	# check for per exception
 	jz	0f
-	l	%r1,__TI_task(%r12)
-	tmh	%r8,0x0001		# kernel per event ?
+	tmhh	%r8,0x0001		# kernel per event ?
 	jz	.Lpgm_kprobe
-	oi	__PT_FLAGS+3(%r11),_PIF_PER_TRAP
-	mvc	__THREAD_per_address(4,%r1),__LC_PER_ADDRESS
-	mvc	__THREAD_per_cause(2,%r1),__LC_PER_CODE
-	mvc	__THREAD_per_paid(1,%r1),__LC_PER_ACCESS_ID
+	oi	__PT_FLAGS+7(%r11),_PIF_PER_TRAP
+	mvc	__THREAD_per_address(8,%r14),__LC_PER_ADDRESS
+	mvc	__THREAD_per_cause(2,%r14),__LC_PER_CODE
+	mvc	__THREAD_per_paid(1,%r14),__LC_PER_ACCESS_ID
 0:	REENABLE_IRQS
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-	l	%r1,BASED(.Lc_jump_table)
-	la	%r10,0x7f
-	n	%r10,__PT_INT_CODE(%r11)
-	je	.Lsysc_return
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+	larl	%r1,pgm_check_table
+	llgh	%r10,__PT_INT_CODE+2(%r11)
+	nill	%r10,0x007f
 	sll	%r10,2
-	l	%r1,0(%r10,%r1)		# load address of handler routine
-	lr	%r2,%r11		# pass pointer to pt_regs
+	je	.Lsysc_return
+	lgf	%r1,0(%r10,%r1)		# load address of handler routine
+	lgr	%r2,%r11		# pass pointer to pt_regs
 	basr	%r14,%r1		# branch to interrupt-handler
 	j	.Lsysc_return
 
@@ -408,54 +454,55 @@ ENTRY(pgm_check_handler)
 #
 .Lpgm_kprobe:
 	REENABLE_IRQS
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-	l	%r1,BASED(.Lc_do_per_trap)
-	lr	%r2,%r11		# pass pointer to pt_regs
-	basr	%r14,%r1		# call do_per_trap
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	brasl	%r14,do_per_trap
 	j	.Lsysc_return
 
 #
 # single stepped system call
 #
 .Lpgm_svcper:
-	mvc	__LC_RETURN_PSW(4),__LC_SVC_NEW_PSW
-	mvc	__LC_RETURN_PSW+4(4),BASED(.Lc_sysc_per)
-	lhi	%r14,_PIF_SYSCALL | _PIF_PER_TRAP
-	lpsw	__LC_RETURN_PSW		# branch to .Lsysc_per and enable irqs
+	mvc	__LC_RETURN_PSW(8),__LC_SVC_NEW_PSW
+	larl	%r14,.Lsysc_per
+	stg	%r14,__LC_RETURN_PSW+8
+	lghi	%r14,_PIF_SYSCALL | _PIF_PER_TRAP
+	lpswe	__LC_RETURN_PSW		# branch to .Lsysc_per and enable irqs
 
 /*
  * IO interrupt handler routine
  */
-
 ENTRY(io_int_handler)
-	stck	__LC_INT_CLOCK
+	STCK	__LC_INT_CLOCK
 	stpt	__LC_ASYNC_ENTER_TIMER
-	stm	%r8,%r15,__LC_SAVE_AREA_ASYNC
-	l	%r12,__LC_THREAD_INFO
-	l	%r13,__LC_SVC_NEW_PSW+4
-	lm	%r8,%r9,__LC_IO_OLD_PSW
-	tmh	%r8,0x0001		# interrupting from user ?
+	stmg	%r8,%r15,__LC_SAVE_AREA_ASYNC
+	lg	%r10,__LC_LAST_BREAK
+	lg	%r12,__LC_THREAD_INFO
+	larl	%r13,system_call
+	lmg	%r8,%r9,__LC_IO_OLD_PSW
+	HANDLE_SIE_INTERCEPT %r14,2
+	SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
+	tmhh	%r8,0x0001		# interrupting from user?
 	jz	.Lio_skip
-	UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
+	UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
+	LAST_BREAK %r14
 .Lio_skip:
-	SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
-	stm	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
-	stm	%r8,%r9,__PT_PSW(%r11)
+	stmg	%r0,%r7,__PT_R0(%r11)
+	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
+	stmg	%r8,%r9,__PT_PSW(%r11)
 	mvc	__PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
-	xc	__PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
+	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
 	TRACE_IRQS_OFF
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
 .Lio_loop:
-	l	%r1,BASED(.Lc_do_IRQ)
-	lr	%r2,%r11		# pass pointer to pt_regs
-	lhi	%r3,IO_INTERRUPT
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	lghi	%r3,IO_INTERRUPT
 	tm	__PT_INT_CODE+8(%r11),0x80	# adapter interrupt ?
 	jz	.Lio_call
-	lhi	%r3,THIN_INTERRUPT
+	lghi	%r3,THIN_INTERRUPT
 .Lio_call:
-	basr	%r14,%r1		# call do_IRQ
-	tm	__LC_MACHINE_FLAGS+2,0x10	# MACHINE_FLAG_LPAR
+	brasl	%r14,do_IRQ
+	tm	__LC_MACHINE_FLAGS+6,0x10	# MACHINE_FLAG_LPAR
 	jz	.Lio_return
 	tpi	0
 	jz	.Lio_return
@@ -465,21 +512,26 @@ ENTRY(io_int_handler)
 	LOCKDEP_SYS_EXIT
 	TRACE_IRQS_ON
 .Lio_tif:
-	tm	__TI_flags+3(%r12),_TIF_WORK
+	tm	__TI_flags+7(%r12),_TIF_WORK
 	jnz	.Lio_work		# there is work to do (signals etc.)
-	tm	__LC_CPU_FLAGS+3,_CIF_WORK
+	tm	__LC_CPU_FLAGS+7,_CIF_WORK
 	jnz	.Lio_work
 .Lio_restore:
-	mvc	__LC_RETURN_PSW(8),__PT_PSW(%r11)
+	lg	%r14,__LC_VDSO_PER_CPU
+	lmg	%r0,%r10,__PT_R0(%r11)
+	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r11)
 	stpt	__LC_EXIT_TIMER
-	lm	%r0,%r15,__PT_R0(%r11)
-	lpsw	__LC_RETURN_PSW
+	mvc	__VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
+	lmg	%r11,%r15,__PT_R11(%r11)
+	lpswe	__LC_RETURN_PSW
 .Lio_done:
 
 #
 # There is work todo, find out in which context we have been interrupted:
 # 1) if we return to user space we can do all _TIF_WORK work
-# 2) if we return to kernel code and preemptive scheduling is enabled check
+# 2) if we return to kernel code and kvm is enabled check if we need to
+#    modify the psw to leave SIE
+# 3) if we return to kernel code and preemptive scheduling is enabled check
 #    the preemption counter and if it is zero call preempt_schedule_irq
 # Before any work can be done, a switch to the kernel stack is required.
 #
@@ -489,21 +541,20 @@ ENTRY(io_int_handler)
 #ifdef CONFIG_PREEMPT
 	# check for preemptive scheduling
 	icm	%r0,15,__TI_precount(%r12)
-	jnz	.Lio_restore		# preemption disabled
-	tm	__TI_flags+3(%r12),_TIF_NEED_RESCHED
+	jnz	.Lio_restore		# preemption is disabled
+	tm	__TI_flags+7(%r12),_TIF_NEED_RESCHED
 	jno	.Lio_restore
 	# switch to kernel stack
-	l	%r1,__PT_R15(%r11)
-	ahi	%r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
+	lg	%r1,__PT_R15(%r11)
+	aghi	%r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
 	mvc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
-	xc	__SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
+	xc	__SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
 	la	%r11,STACK_FRAME_OVERHEAD(%r1)
-	lr	%r15,%r1
+	lgr	%r15,%r1
 	# TRACE_IRQS_ON already done at .Lio_return, call
 	# TRACE_IRQS_OFF to keep things symmetrical
 	TRACE_IRQS_OFF
-	l	%r1,BASED(.Lc_preempt_irq)
-	basr	%r14,%r1		# call preempt_schedule_irq
+	brasl	%r14,preempt_schedule_irq
 	j	.Lio_return
 #else
 	j	.Lio_restore
@@ -513,25 +564,25 @@ ENTRY(io_int_handler)
 # Need to do work before returning to userspace, switch to kernel stack
 #
 .Lio_work_user:
-	l	%r1,__LC_KERNEL_STACK
+	lg	%r1,__LC_KERNEL_STACK
 	mvc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
-	xc	__SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
+	xc	__SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
 	la	%r11,STACK_FRAME_OVERHEAD(%r1)
-	lr	%r15,%r1
+	lgr	%r15,%r1
 
 #
 # One of the work bits is on. Find out which one.
 #
 .Lio_work_tif:
-	tm	__LC_CPU_FLAGS+3(%r12),_CIF_MCCK_PENDING
+	tm	__LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
 	jo	.Lio_mcck_pending
-	tm	__TI_flags+3(%r12),_TIF_NEED_RESCHED
+	tm	__TI_flags+7(%r12),_TIF_NEED_RESCHED
 	jo	.Lio_reschedule
-	tm	__TI_flags+3(%r12),_TIF_SIGPENDING
+	tm	__TI_flags+7(%r12),_TIF_SIGPENDING
 	jo	.Lio_sigpending
-	tm	__TI_flags+3(%r12),_TIF_NOTIFY_RESUME
+	tm	__TI_flags+7(%r12),_TIF_NOTIFY_RESUME
 	jo	.Lio_notify_resume
-	tm	__LC_CPU_FLAGS+3,_CIF_ASCE
+	tm	__LC_CPU_FLAGS+7,_CIF_ASCE
 	jo	.Lio_uaccess
 	j	.Lio_return		# beware of critical section cleanup
 
@@ -540,8 +591,7 @@ ENTRY(io_int_handler)
 #
 .Lio_mcck_pending:
 	# TRACE_IRQS_ON already done at .Lio_return
-	l	%r1,BASED(.Lc_handle_mcck)
-	basr	%r14,%r1		# TIF bit will be cleared by handler
+	brasl	%r14,s390_handle_mcck	# TIF bit will be cleared by handler
 	TRACE_IRQS_OFF
 	j	.Lio_return
 
@@ -549,8 +599,8 @@ ENTRY(io_int_handler)
 # _CIF_ASCE is set, load user space asce
 #
 .Lio_uaccess:
-	ni	__LC_CPU_FLAGS+3,255-_CIF_ASCE
-	lctl	%c1,%c1,__LC_USER_ASCE	# load primary asce
+	ni	__LC_CPU_FLAGS+7,255-_CIF_ASCE
+	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
 	j	.Lio_return
 
 #
@@ -558,35 +608,32 @@ ENTRY(io_int_handler)
 #
 .Lio_reschedule:
 	# TRACE_IRQS_ON already done at .Lio_return
-	l	%r1,BASED(.Lc_schedule)
 	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	basr	%r14,%r1		# call scheduler
+	brasl	%r14,schedule		# call scheduler
 	ssm	__LC_PGM_NEW_PSW	# disable I/O and ext. interrupts
 	TRACE_IRQS_OFF
 	j	.Lio_return
 
 #
-# _TIF_SIGPENDING is set, call do_signal
+# _TIF_SIGPENDING or is set, call do_signal
 #
 .Lio_sigpending:
 	# TRACE_IRQS_ON already done at .Lio_return
-	l	%r1,BASED(.Lc_do_signal)
 	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	lr	%r2,%r11		# pass pointer to pt_regs
-	basr	%r14,%r1		# call do_signal
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	brasl	%r14,do_signal
 	ssm	__LC_PGM_NEW_PSW	# disable I/O and ext. interrupts
 	TRACE_IRQS_OFF
 	j	.Lio_return
 
 #
-# _TIF_SIGPENDING is set, call do_signal
+# _TIF_NOTIFY_RESUME or is set, call do_notify_resume
 #
 .Lio_notify_resume:
 	# TRACE_IRQS_ON already done at .Lio_return
-	l	%r1,BASED(.Lc_do_notify_resume)
 	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	lr	%r2,%r11		# pass pointer to pt_regs
-	basr	%r14,%r1		# call do_notify_resume
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	brasl	%r14,do_notify_resume
 	ssm	__LC_PGM_NEW_PSW	# disable I/O and ext. interrupts
 	TRACE_IRQS_OFF
 	j	.Lio_return
@@ -594,45 +641,47 @@ ENTRY(io_int_handler)
 /*
  * External interrupt handler routine
  */
-
 ENTRY(ext_int_handler)
-	stck	__LC_INT_CLOCK
+	STCK	__LC_INT_CLOCK
 	stpt	__LC_ASYNC_ENTER_TIMER
-	stm	%r8,%r15,__LC_SAVE_AREA_ASYNC
-	l	%r12,__LC_THREAD_INFO
-	l	%r13,__LC_SVC_NEW_PSW+4
-	lm	%r8,%r9,__LC_EXT_OLD_PSW
-	tmh	%r8,0x0001		# interrupting from user ?
+	stmg	%r8,%r15,__LC_SAVE_AREA_ASYNC
+	lg	%r10,__LC_LAST_BREAK
+	lg	%r12,__LC_THREAD_INFO
+	larl	%r13,system_call
+	lmg	%r8,%r9,__LC_EXT_OLD_PSW
+	HANDLE_SIE_INTERCEPT %r14,3
+	SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
+	tmhh	%r8,0x0001		# interrupting from user ?
 	jz	.Lext_skip
-	UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
+	UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
+	LAST_BREAK %r14
 .Lext_skip:
-	SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
-	stm	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
-	stm	%r8,%r9,__PT_PSW(%r11)
+	stmg	%r0,%r7,__PT_R0(%r11)
+	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
+	stmg	%r8,%r9,__PT_PSW(%r11)
+	lghi	%r1,__LC_EXT_PARAMS2
 	mvc	__PT_INT_CODE(4,%r11),__LC_EXT_CPU_ADDR
 	mvc	__PT_INT_PARM(4,%r11),__LC_EXT_PARAMS
-	xc	__PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
+	mvc	__PT_INT_PARM_LONG(8,%r11),0(%r1)
+	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
 	TRACE_IRQS_OFF
-	l	%r1,BASED(.Lc_do_IRQ)
-	lr	%r2,%r11		# pass pointer to pt_regs
-	lhi	%r3,EXT_INTERRUPT
-	basr	%r14,%r1		# call do_IRQ
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	lghi	%r3,EXT_INTERRUPT
+	brasl	%r14,do_IRQ
 	j	.Lio_return
 
 /*
  * Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
  */
 ENTRY(psw_idle)
-	st	%r3,__SF_EMPTY(%r15)
-	basr	%r1,0
-	la	%r1,.Lpsw_idle_lpsw+4-.(%r1)
-	st	%r1,__SF_EMPTY+4(%r15)
-	oi	__SF_EMPTY+4(%r15),0x80
-	stck	__CLOCK_IDLE_ENTER(%r2)
+	stg	%r3,__SF_EMPTY(%r15)
+	larl	%r1,.Lpsw_idle_lpsw+4
+	stg	%r1,__SF_EMPTY+8(%r15)
+	STCK	__CLOCK_IDLE_ENTER(%r2)
 	stpt	__TIMER_IDLE_ENTER(%r2)
 .Lpsw_idle_lpsw:
-	lpsw	__SF_EMPTY(%r15)
+	lpswe	__SF_EMPTY(%r15)
 	br	%r14
 .Lpsw_idle_end:
 
@@ -641,17 +690,19 @@ ENTRY(psw_idle)
 /*
  * Machine check handler routines
  */
-
 ENTRY(mcck_int_handler)
-	stck	__LC_MCCK_CLOCK
-	spt	__LC_CPU_TIMER_SAVE_AREA	# revalidate cpu timer
-	lm	%r0,%r15,__LC_GPREGS_SAVE_AREA	# revalidate gprs
-	l	%r12,__LC_THREAD_INFO
-	l	%r13,__LC_SVC_NEW_PSW+4
-	lm	%r8,%r9,__LC_MCK_OLD_PSW
+	STCK	__LC_MCCK_CLOCK
+	la	%r1,4095		# revalidate r1
+	spt	__LC_CPU_TIMER_SAVE_AREA-4095(%r1)	# revalidate cpu timer
+	lmg	%r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
+	lg	%r10,__LC_LAST_BREAK
+	lg	%r12,__LC_THREAD_INFO
+	larl	%r13,system_call
+	lmg	%r8,%r9,__LC_MCK_OLD_PSW
+	HANDLE_SIE_INTERCEPT %r14,4
 	tm	__LC_MCCK_CODE,0x80	# system damage?
 	jo	.Lmcck_panic		# yes -> rest of mcck code invalid
-	la	%r14,__LC_CPU_TIMER_SAVE_AREA
+	lghi	%r14,__LC_CPU_TIMER_SAVE_AREA
 	mvc	__LC_MCCK_ENTER_TIMER(8),0(%r14)
 	tm	__LC_MCCK_CODE+5,0x02	# stored cpu timer value valid?
 	jo	3f
@@ -669,76 +720,76 @@ ENTRY(mcck_int_handler)
 	mvc	__LC_MCCK_ENTER_TIMER(8),0(%r14)
 3:	tm	__LC_MCCK_CODE+2,0x09	# mwp + ia of old psw valid?
 	jno	.Lmcck_panic		# no -> skip cleanup critical
+	SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+64,__LC_PANIC_STACK,PAGE_SHIFT
 	tm	%r8,0x0001		# interrupting from user ?
 	jz	.Lmcck_skip
-	UPDATE_VTIME %r14,%r15,__LC_MCCK_ENTER_TIMER
+	UPDATE_VTIME %r14,__LC_MCCK_ENTER_TIMER
+	LAST_BREAK %r14
 .Lmcck_skip:
-	SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+32,__LC_PANIC_STACK,PAGE_SHIFT
-	stm	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(32,%r11),__LC_GPREGS_SAVE_AREA+32
-	stm	%r8,%r9,__PT_PSW(%r11)
-	xc	__PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-	l	%r1,BASED(.Lc_do_machine_check)
-	lr	%r2,%r11		# pass pointer to pt_regs
-	basr	%r14,%r1		# call s390_do_machine_check
+	lghi	%r14,__LC_GPREGS_SAVE_AREA+64
+	stmg	%r0,%r7,__PT_R0(%r11)
+	mvc	__PT_R8(64,%r11),0(%r14)
+	stmg	%r8,%r9,__PT_PSW(%r11)
+	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	brasl	%r14,s390_do_machine_check
 	tm	__PT_PSW+1(%r11),0x01	# returning to user ?
 	jno	.Lmcck_return
-	l	%r1,__LC_KERNEL_STACK	# switch to kernel stack
+	lg	%r1,__LC_KERNEL_STACK	# switch to kernel stack
 	mvc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
-	xc	__SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
-	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	lr	%r15,%r1
+	xc	__SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
+	la	%r11,STACK_FRAME_OVERHEAD(%r1)
+	lgr	%r15,%r1
 	ssm	__LC_PGM_NEW_PSW	# turn dat on, keep irqs off
-	tm	__LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
+	tm	__LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
 	jno	.Lmcck_return
 	TRACE_IRQS_OFF
-	l	%r1,BASED(.Lc_handle_mcck)
-	basr	%r14,%r1		# call s390_handle_mcck
+	brasl	%r14,s390_handle_mcck
 	TRACE_IRQS_ON
 .Lmcck_return:
-	mvc	__LC_RETURN_MCCK_PSW(8),__PT_PSW(%r11) # move return PSW
+	lg	%r14,__LC_VDSO_PER_CPU
+	lmg	%r0,%r10,__PT_R0(%r11)
+	mvc	__LC_RETURN_MCCK_PSW(16),__PT_PSW(%r11) # move return PSW
 	tm	__LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
 	jno	0f
-	lm	%r0,%r15,__PT_R0(%r11)
 	stpt	__LC_EXIT_TIMER
-	lpsw	__LC_RETURN_MCCK_PSW
-0:	lm	%r0,%r15,__PT_R0(%r11)
-	lpsw	__LC_RETURN_MCCK_PSW
+	mvc	__VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
+0:	lmg	%r11,%r15,__PT_R11(%r11)
+	lpswe	__LC_RETURN_MCCK_PSW
 
 .Lmcck_panic:
-	l	%r14,__LC_PANIC_STACK
-	slr	%r14,%r15
-	sra	%r14,PAGE_SHIFT
+	lg	%r14,__LC_PANIC_STACK
+	slgr	%r14,%r15
+	srag	%r14,%r14,PAGE_SHIFT
 	jz	0f
-	l	%r15,__LC_PANIC_STACK
-	j	.Lmcck_skip
-0:	ahi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
+	lg	%r15,__LC_PANIC_STACK
+0:	aghi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
 	j	.Lmcck_skip
 
 #
 # PSW restart interrupt handler
 #
 ENTRY(restart_int_handler)
-	st	%r15,__LC_SAVE_AREA_RESTART
-	l	%r15,__LC_RESTART_STACK
-	ahi	%r15,-__PT_SIZE			# create pt_regs on stack
+	stg	%r15,__LC_SAVE_AREA_RESTART
+	lg	%r15,__LC_RESTART_STACK
+	aghi	%r15,-__PT_SIZE			# create pt_regs on stack
 	xc	0(__PT_SIZE,%r15),0(%r15)
-	stm	%r0,%r14,__PT_R0(%r15)
-	mvc	__PT_R15(4,%r15),__LC_SAVE_AREA_RESTART
-	mvc	__PT_PSW(8,%r15),__LC_RST_OLD_PSW # store restart old psw
-	ahi	%r15,-STACK_FRAME_OVERHEAD	# create stack frame on stack
+	stmg	%r0,%r14,__PT_R0(%r15)
+	mvc	__PT_R15(8,%r15),__LC_SAVE_AREA_RESTART
+	mvc	__PT_PSW(16,%r15),__LC_RST_OLD_PSW # store restart old psw
+	aghi	%r15,-STACK_FRAME_OVERHEAD	# create stack frame on stack
 	xc	0(STACK_FRAME_OVERHEAD,%r15),0(%r15)
-	l	%r1,__LC_RESTART_FN		# load fn, parm & source cpu
-	l	%r2,__LC_RESTART_DATA
-	l	%r3,__LC_RESTART_SOURCE
-	ltr	%r3,%r3				# test source cpu address
+	lg	%r1,__LC_RESTART_FN		# load fn, parm & source cpu
+	lg	%r2,__LC_RESTART_DATA
+	lg	%r3,__LC_RESTART_SOURCE
+	ltgr	%r3,%r3				# test source cpu address
 	jm	1f				# negative -> skip source stop
 0:	sigp	%r4,%r3,SIGP_SENSE		# sigp sense to source cpu
 	brc	10,0b				# wait for status stored
 1:	basr	%r14,%r1			# call function
 	stap	__SF_EMPTY(%r15)		# store cpu address
-	lh	%r3,__SF_EMPTY(%r15)
+	llgh	%r3,__SF_EMPTY(%r15)
 2:	sigp	%r4,%r3,SIGP_STOP		# sigp stop to current cpu
 	brc	2,2b
 3:	j	3b
@@ -752,215 +803,257 @@ ENTRY(restart_int_handler)
  * Setup a pt_regs so that show_trace can provide a good call trace.
  */
 stack_overflow:
-	l	%r15,__LC_PANIC_STACK	# change to panic stack
+	lg	%r15,__LC_PANIC_STACK	# change to panic stack
 	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	stm	%r0,%r7,__PT_R0(%r11)
-	stm	%r8,%r9,__PT_PSW(%r11)
-	mvc	__PT_R8(32,%r11),0(%r14)
-	l	%r1,BASED(1f)
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-	lr	%r2,%r11		# pass pointer to pt_regs
-	br	%r1			# branch to kernel_stack_overflow
-1:	.long	kernel_stack_overflow
+	stmg	%r0,%r7,__PT_R0(%r11)
+	stmg	%r8,%r9,__PT_PSW(%r11)
+	mvc	__PT_R8(64,%r11),0(%r14)
+	stg	%r10,__PT_ORIG_GPR2(%r11) # store last break to orig_gpr2
+	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+	lgr	%r2,%r11		# pass pointer to pt_regs
+	jg	kernel_stack_overflow
 #endif
 
+	.align	8
 .Lcleanup_table:
-	.long	system_call + 0x80000000
-	.long	.Lsysc_do_svc + 0x80000000
-	.long	.Lsysc_tif + 0x80000000
-	.long	.Lsysc_restore + 0x80000000
-	.long	.Lsysc_done + 0x80000000
-	.long	.Lio_tif + 0x80000000
-	.long	.Lio_restore + 0x80000000
-	.long	.Lio_done + 0x80000000
-	.long	psw_idle + 0x80000000
-	.long	.Lpsw_idle_end + 0x80000000
+	.quad	system_call
+	.quad	.Lsysc_do_svc
+	.quad	.Lsysc_tif
+	.quad	.Lsysc_restore
+	.quad	.Lsysc_done
+	.quad	.Lio_tif
+	.quad	.Lio_restore
+	.quad	.Lio_done
+	.quad	psw_idle
+	.quad	.Lpsw_idle_end
 
 cleanup_critical:
-	cl	%r9,BASED(.Lcleanup_table)	# system_call
+	clg	%r9,BASED(.Lcleanup_table)	# system_call
 	jl	0f
-	cl	%r9,BASED(.Lcleanup_table+4)	# .Lsysc_do_svc
+	clg	%r9,BASED(.Lcleanup_table+8)	# .Lsysc_do_svc
 	jl	.Lcleanup_system_call
-	cl	%r9,BASED(.Lcleanup_table+8)	# .Lsysc_tif
+	clg	%r9,BASED(.Lcleanup_table+16)	# .Lsysc_tif
 	jl	0f
-	cl	%r9,BASED(.Lcleanup_table+12)	# .Lsysc_restore
+	clg	%r9,BASED(.Lcleanup_table+24)	# .Lsysc_restore
 	jl	.Lcleanup_sysc_tif
-	cl	%r9,BASED(.Lcleanup_table+16)	# .Lsysc_done
+	clg	%r9,BASED(.Lcleanup_table+32)	# .Lsysc_done
 	jl	.Lcleanup_sysc_restore
-	cl	%r9,BASED(.Lcleanup_table+20)	# .Lio_tif
+	clg	%r9,BASED(.Lcleanup_table+40)	# .Lio_tif
 	jl	0f
-	cl	%r9,BASED(.Lcleanup_table+24)	# .Lio_restore
+	clg	%r9,BASED(.Lcleanup_table+48)	# .Lio_restore
 	jl	.Lcleanup_io_tif
-	cl	%r9,BASED(.Lcleanup_table+28)	# .Lio_done
+	clg	%r9,BASED(.Lcleanup_table+56)	# .Lio_done
 	jl	.Lcleanup_io_restore
-	cl	%r9,BASED(.Lcleanup_table+32)	# psw_idle
+	clg	%r9,BASED(.Lcleanup_table+64)	# psw_idle
 	jl	0f
-	cl	%r9,BASED(.Lcleanup_table+36)	# .Lpsw_idle_end
+	clg	%r9,BASED(.Lcleanup_table+72)	# .Lpsw_idle_end
 	jl	.Lcleanup_idle
 0:	br	%r14
 
+
 .Lcleanup_system_call:
 	# check if stpt has been executed
-	cl	%r9,BASED(.Lcleanup_system_call_insn)
+	clg	%r9,BASED(.Lcleanup_system_call_insn)
 	jh	0f
 	mvc	__LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
-	chi	%r11,__LC_SAVE_AREA_ASYNC
+	cghi	%r11,__LC_SAVE_AREA_ASYNC
 	je	0f
 	mvc	__LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
-0:	# check if stm has been executed
-	cl	%r9,BASED(.Lcleanup_system_call_insn+4)
+0:	# check if stmg has been executed
+	clg	%r9,BASED(.Lcleanup_system_call_insn+8)
 	jh	0f
-	mvc	__LC_SAVE_AREA_SYNC(32),0(%r11)
-0:	# set up saved registers r12, and r13
-	st	%r12,16(%r11)		# r12 thread-info pointer
-	st	%r13,20(%r11)		# r13 literal-pool pointer
-	# check if the user time calculation has been done
-	cl	%r9,BASED(.Lcleanup_system_call_insn+8)
+	mvc	__LC_SAVE_AREA_SYNC(64),0(%r11)
+0:	# check if base register setup + TIF bit load has been done
+	clg	%r9,BASED(.Lcleanup_system_call_insn+16)
+	jhe	0f
+	# set up saved registers r10 and r12
+	stg	%r10,16(%r11)		# r10 last break
+	stg	%r12,32(%r11)		# r12 thread-info pointer
+0:	# check if the user time update has been done
+	clg	%r9,BASED(.Lcleanup_system_call_insn+24)
 	jh	0f
-	l	%r10,__LC_EXIT_TIMER
-	l	%r15,__LC_EXIT_TIMER+4
-	SUB64	%r10,%r15,__LC_SYNC_ENTER_TIMER
-	ADD64	%r10,%r15,__LC_USER_TIMER
-	st	%r10,__LC_USER_TIMER
-	st	%r15,__LC_USER_TIMER+4
-0:	# check if the system time calculation has been done
-	cl	%r9,BASED(.Lcleanup_system_call_insn+12)
+	lg	%r15,__LC_EXIT_TIMER
+	slg	%r15,__LC_SYNC_ENTER_TIMER
+	alg	%r15,__LC_USER_TIMER
+	stg	%r15,__LC_USER_TIMER
+0:	# check if the system time update has been done
+	clg	%r9,BASED(.Lcleanup_system_call_insn+32)
 	jh	0f
-	l	%r10,__LC_LAST_UPDATE_TIMER
-	l	%r15,__LC_LAST_UPDATE_TIMER+4
-	SUB64	%r10,%r15,__LC_EXIT_TIMER
-	ADD64	%r10,%r15,__LC_SYSTEM_TIMER
-	st	%r10,__LC_SYSTEM_TIMER
-	st	%r15,__LC_SYSTEM_TIMER+4
+	lg	%r15,__LC_LAST_UPDATE_TIMER
+	slg	%r15,__LC_EXIT_TIMER
+	alg	%r15,__LC_SYSTEM_TIMER
+	stg	%r15,__LC_SYSTEM_TIMER
 0:	# update accounting time stamp
 	mvc	__LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-	# set up saved register 11
-	l	%r15,__LC_KERNEL_STACK
+	# do LAST_BREAK
+	lg	%r9,16(%r11)
+	srag	%r9,%r9,23
+	jz	0f
+	mvc	__TI_last_break(8,%r12),16(%r11)
+0:	# set up saved register r11
+	lg	%r15,__LC_KERNEL_STACK
 	la	%r9,STACK_FRAME_OVERHEAD(%r15)
-	st	%r9,12(%r11)		# r11 pt_regs pointer
+	stg	%r9,24(%r11)		# r11 pt_regs pointer
 	# fill pt_regs
-	mvc	__PT_R8(32,%r9),__LC_SAVE_AREA_SYNC
-	stm	%r0,%r7,__PT_R0(%r9)
-	mvc	__PT_PSW(8,%r9),__LC_SVC_OLD_PSW
+	mvc	__PT_R8(64,%r9),__LC_SAVE_AREA_SYNC
+	stmg	%r0,%r7,__PT_R0(%r9)
+	mvc	__PT_PSW(16,%r9),__LC_SVC_OLD_PSW
 	mvc	__PT_INT_CODE(4,%r9),__LC_SVC_ILC
-	xc	__PT_FLAGS(4,%r9),__PT_FLAGS(%r9)
-	mvi	__PT_FLAGS+3(%r9),_PIF_SYSCALL
-	# setup saved register 15
-	st	%r15,28(%r11)		# r15 stack pointer
+	xc	__PT_FLAGS(8,%r9),__PT_FLAGS(%r9)
+	mvi	__PT_FLAGS+7(%r9),_PIF_SYSCALL
+	# setup saved register r15
+	stg	%r15,56(%r11)		# r15 stack pointer
 	# set new psw address and exit
-	l	%r9,BASED(.Lcleanup_table+4)	# .Lsysc_do_svc + 0x80000000
+	larl	%r9,.Lsysc_do_svc
 	br	%r14
 .Lcleanup_system_call_insn:
-	.long	system_call + 0x80000000
-	.long	.Lsysc_stm + 0x80000000
-	.long	.Lsysc_vtime + 0x80000000 + 36
-	.long	.Lsysc_vtime + 0x80000000 + 76
+	.quad	system_call
+	.quad	.Lsysc_stmg
+	.quad	.Lsysc_per
+	.quad	.Lsysc_vtime+18
+	.quad	.Lsysc_vtime+42
 
 .Lcleanup_sysc_tif:
-	l	%r9,BASED(.Lcleanup_table+8)	# .Lsysc_tif + 0x80000000
+	larl	%r9,.Lsysc_tif
 	br	%r14
 
 .Lcleanup_sysc_restore:
-	cl	%r9,BASED(.Lcleanup_sysc_restore_insn)
-	jhe	0f
-	l	%r9,12(%r11)		# get saved pointer to pt_regs
-	mvc	__LC_RETURN_PSW(8),__PT_PSW(%r9)
-	mvc	0(32,%r11),__PT_R8(%r9)
-	lm	%r0,%r7,__PT_R0(%r9)
-0:	lm	%r8,%r9,__LC_RETURN_PSW
+	clg	%r9,BASED(.Lcleanup_sysc_restore_insn)
+	je	0f
+	lg	%r9,24(%r11)		# get saved pointer to pt_regs
+	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r9)
+	mvc	0(64,%r11),__PT_R8(%r9)
+	lmg	%r0,%r7,__PT_R0(%r9)
+0:	lmg	%r8,%r9,__LC_RETURN_PSW
 	br	%r14
 .Lcleanup_sysc_restore_insn:
-	.long	.Lsysc_done - 4 + 0x80000000
+	.quad	.Lsysc_done - 4
 
 .Lcleanup_io_tif:
-	l	%r9,BASED(.Lcleanup_table+20)	# .Lio_tif + 0x80000000
+	larl	%r9,.Lio_tif
 	br	%r14
 
 .Lcleanup_io_restore:
-	cl	%r9,BASED(.Lcleanup_io_restore_insn)
-	jhe	0f
-	l	%r9,12(%r11)		# get saved r11 pointer to pt_regs
-	mvc	__LC_RETURN_PSW(8),__PT_PSW(%r9)
-	mvc	0(32,%r11),__PT_R8(%r9)
-	lm	%r0,%r7,__PT_R0(%r9)
-0:	lm	%r8,%r9,__LC_RETURN_PSW
+	clg	%r9,BASED(.Lcleanup_io_restore_insn)
+	je	0f
+	lg	%r9,24(%r11)		# get saved r11 pointer to pt_regs
+	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r9)
+	mvc	0(64,%r11),__PT_R8(%r9)
+	lmg	%r0,%r7,__PT_R0(%r9)
+0:	lmg	%r8,%r9,__LC_RETURN_PSW
 	br	%r14
 .Lcleanup_io_restore_insn:
-	.long	.Lio_done - 4 + 0x80000000
+	.quad	.Lio_done - 4
 
 .Lcleanup_idle:
 	# copy interrupt clock & cpu timer
 	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
 	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
-	chi	%r11,__LC_SAVE_AREA_ASYNC
+	cghi	%r11,__LC_SAVE_AREA_ASYNC
 	je	0f
 	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
 	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
-0:	# check if stck has been executed
-	cl	%r9,BASED(.Lcleanup_idle_insn)
+0:	# check if stck & stpt have been executed
+	clg	%r9,BASED(.Lcleanup_idle_insn)
 	jhe	1f
 	mvc	__CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
-	mvc	__TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r3)
+	mvc	__TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r2)
 1:	# account system time going idle
-	lm	%r9,%r10,__LC_STEAL_TIMER
-	ADD64	%r9,%r10,__CLOCK_IDLE_ENTER(%r2)
-	SUB64	%r9,%r10,__LC_LAST_UPDATE_CLOCK
-	stm	%r9,%r10,__LC_STEAL_TIMER
+	lg	%r9,__LC_STEAL_TIMER
+	alg	%r9,__CLOCK_IDLE_ENTER(%r2)
+	slg	%r9,__LC_LAST_UPDATE_CLOCK
+	stg	%r9,__LC_STEAL_TIMER
 	mvc	__LC_LAST_UPDATE_CLOCK(8),__CLOCK_IDLE_EXIT(%r2)
-	lm	%r9,%r10,__LC_SYSTEM_TIMER
-	ADD64	%r9,%r10,__LC_LAST_UPDATE_TIMER
-	SUB64	%r9,%r10,__TIMER_IDLE_ENTER(%r2)
-	stm	%r9,%r10,__LC_SYSTEM_TIMER
+	lg	%r9,__LC_SYSTEM_TIMER
+	alg	%r9,__LC_LAST_UPDATE_TIMER
+	slg	%r9,__TIMER_IDLE_ENTER(%r2)
+	stg	%r9,__LC_SYSTEM_TIMER
 	mvc	__LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
 	# prepare return psw
-	n	%r8,BASED(.Lcleanup_idle_wait)	# clear irq & wait state bits
-	l	%r9,24(%r11)			# return from psw_idle
+	nihh	%r8,0xfcfd		# clear irq & wait state bits
+	lg	%r9,48(%r11)		# return from psw_idle
 	br	%r14
 .Lcleanup_idle_insn:
-	.long	.Lpsw_idle_lpsw + 0x80000000
-.Lcleanup_idle_wait:
-	.long	0xfcfdffff
+	.quad	.Lpsw_idle_lpsw
 
 /*
  * Integer constants
  */
-	.align	4
-.Lnr_syscalls:
-	.long	NR_syscalls
-.Lvtimer_max:
-	.quad	0x7fffffffffffffff
+	.align	8
+.Lcritical_start:
+	.quad	.L__critical_start
+.Lcritical_length:
+	.quad	.L__critical_end - .L__critical_start
+
 
+#if IS_ENABLED(CONFIG_KVM)
 /*
- * Symbol constants
+ * sie64a calling convention:
+ * %r2 pointer to sie control block
+ * %r3 guest register save area
  */
-.Lc_do_machine_check:	.long	s390_do_machine_check
-.Lc_handle_mcck:	.long	s390_handle_mcck
-.Lc_do_IRQ:		.long	do_IRQ
-.Lc_do_signal:		.long	do_signal
-.Lc_do_notify_resume:	.long	do_notify_resume
-.Lc_do_per_trap:	.long	do_per_trap
-.Lc_jump_table:		.long	pgm_check_table
-.Lc_schedule:		.long	schedule
-#ifdef CONFIG_PREEMPT
-.Lc_preempt_irq:	.long	preempt_schedule_irq
-#endif
-.Lc_trace_enter:	.long	do_syscall_trace_enter
-.Lc_trace_exit:		.long	do_syscall_trace_exit
-.Lc_schedule_tail:	.long	schedule_tail
-.Lc_sysc_per:		.long	.Lsysc_per + 0x80000000
-#ifdef CONFIG_TRACE_IRQFLAGS
-.Lc_hardirqs_on:	.long	trace_hardirqs_on_caller
-.Lc_hardirqs_off:	.long	trace_hardirqs_off_caller
-#endif
-#ifdef CONFIG_LOCKDEP
-.Lc_lockdep_sys_exit:	.long	lockdep_sys_exit
+ENTRY(sie64a)
+	stmg	%r6,%r14,__SF_GPRS(%r15)	# save kernel registers
+	stg	%r2,__SF_EMPTY(%r15)		# save control block pointer
+	stg	%r3,__SF_EMPTY+8(%r15)		# save guest register save area
+	xc	__SF_EMPTY+16(16,%r15),__SF_EMPTY+16(%r15) # host id & reason
+	lmg	%r0,%r13,0(%r3)			# load guest gprs 0-13
+	lg	%r14,__LC_GMAP			# get gmap pointer
+	ltgr	%r14,%r14
+	jz	.Lsie_gmap
+	lctlg	%c1,%c1,__GMAP_ASCE(%r14)	# load primary asce
+.Lsie_gmap:
+	lg	%r14,__SF_EMPTY(%r15)		# get control block pointer
+	oi	__SIE_PROG0C+3(%r14),1		# we are going into SIE now
+	tm	__SIE_PROG20+3(%r14),1		# last exit...
+	jnz	.Lsie_done
+	LPP	__SF_EMPTY(%r15)		# set guest id
+	sie	0(%r14)
+.Lsie_done:
+	LPP	__SF_EMPTY+16(%r15)		# set host id
+	ni	__SIE_PROG0C+3(%r14),0xfe	# no longer in SIE
+	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
+# some program checks are suppressing. C code (e.g. do_protection_exception)
+# will rewind the PSW by the ILC, which is 4 bytes in case of SIE. Other
+# instructions between sie64a and .Lsie_done should not cause program
+# interrupts. So lets use a nop (47 00 00 00) as a landing pad.
+# See also HANDLE_SIE_INTERCEPT
+.Lrewind_pad:
+	nop	0
+	.globl sie_exit
+sie_exit:
+	lg	%r14,__SF_EMPTY+8(%r15)		# load guest register save area
+	stmg	%r0,%r13,0(%r14)		# save guest gprs 0-13
+	lmg	%r6,%r14,__SF_GPRS(%r15)	# restore kernel registers
+	lg	%r2,__SF_EMPTY+24(%r15)		# return exit reason code
+	br	%r14
+.Lsie_fault:
+	lghi	%r14,-EFAULT
+	stg	%r14,__SF_EMPTY+24(%r15)	# set exit reason code
+	j	sie_exit
+
+	.align	8
+.Lsie_critical:
+	.quad	.Lsie_gmap
+.Lsie_critical_length:
+	.quad	.Lsie_done - .Lsie_gmap
+
+	EX_TABLE(.Lrewind_pad,.Lsie_fault)
+	EX_TABLE(sie_exit,.Lsie_fault)
 #endif
-.Lc_critical_start:	.long	.L__critical_start + 0x80000000
-.Lc_critical_length:	.long	.L__critical_end - .L__critical_start
 
-		.section .rodata, "a"
-#define SYSCALL(esa,esame,emu)	.long esa
+	.section .rodata, "a"
+#define SYSCALL(esame,emu)	.long esame
 	.globl	sys_call_table
 sys_call_table:
 #include "syscalls.S"
 #undef SYSCALL
+
+#ifdef CONFIG_COMPAT
+
+#define SYSCALL(esame,emu)	.long emu
+	.globl	sys_call_table_emu
+sys_call_table_emu:
+#include "syscalls.S"
+#undef SYSCALL
+#endif

arch/s390/kernel/entry64.S

@@ -1,1059 +0,0 @@
-/*
- *    S390 low-level entry points.
- *
- *    Copyright IBM Corp. 1999, 2012
- *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- *		 Hartmut Penner (hp@de.ibm.com),
- *		 Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
- *		 Heiko Carstens <heiko.carstens@de.ibm.com>
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/processor.h>
-#include <asm/cache.h>
-#include <asm/errno.h>
-#include <asm/ptrace.h>
-#include <asm/thread_info.h>
-#include <asm/asm-offsets.h>
-#include <asm/unistd.h>
-#include <asm/page.h>
-#include <asm/sigp.h>
-#include <asm/irq.h>
-
-__PT_R0      =	__PT_GPRS
-__PT_R1      =	__PT_GPRS + 8
-__PT_R2      =	__PT_GPRS + 16
-__PT_R3      =	__PT_GPRS + 24
-__PT_R4      =	__PT_GPRS + 32
-__PT_R5      =	__PT_GPRS + 40
-__PT_R6      =	__PT_GPRS + 48
-__PT_R7      =	__PT_GPRS + 56
-__PT_R8      =	__PT_GPRS + 64
-__PT_R9      =	__PT_GPRS + 72
-__PT_R10     =	__PT_GPRS + 80
-__PT_R11     =	__PT_GPRS + 88
-__PT_R12     =	__PT_GPRS + 96
-__PT_R13     =	__PT_GPRS + 104
-__PT_R14     =	__PT_GPRS + 112
-__PT_R15     =	__PT_GPRS + 120
-
-STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
-STACK_SIZE  = 1 << STACK_SHIFT
-STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
-
-_TIF_WORK	= (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
-		   _TIF_UPROBE)
-_TIF_TRACE	= (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
-		   _TIF_SYSCALL_TRACEPOINT)
-_CIF_WORK	= (_CIF_MCCK_PENDING | _CIF_ASCE)
-_PIF_WORK	= (_PIF_PER_TRAP)
-
-#define BASED(name) name-system_call(%r13)
-
-	.macro	TRACE_IRQS_ON
-#ifdef CONFIG_TRACE_IRQFLAGS
-	basr	%r2,%r0
-	brasl	%r14,trace_hardirqs_on_caller
-#endif
-	.endm
-
-	.macro	TRACE_IRQS_OFF
-#ifdef CONFIG_TRACE_IRQFLAGS
-	basr	%r2,%r0
-	brasl	%r14,trace_hardirqs_off_caller
-#endif
-	.endm
-
-	.macro	LOCKDEP_SYS_EXIT
-#ifdef CONFIG_LOCKDEP
-	tm	__PT_PSW+1(%r11),0x01	# returning to user ?
-	jz	.+10
-	brasl	%r14,lockdep_sys_exit
-#endif
-	.endm
-
-	.macro LPP newpp
-#if IS_ENABLED(CONFIG_KVM)
-	tm	__LC_MACHINE_FLAGS+6,0x20	# MACHINE_FLAG_LPP
-	jz	.+8
-	.insn	s,0xb2800000,\newpp
-#endif
-	.endm
-
-	.macro	HANDLE_SIE_INTERCEPT scratch,reason
-#if IS_ENABLED(CONFIG_KVM)
-	tmhh	%r8,0x0001		# interrupting from user ?
-	jnz	.+62
-	lgr	\scratch,%r9
-	slg	\scratch,BASED(.Lsie_critical)
-	clg	\scratch,BASED(.Lsie_critical_length)
-	.if	\reason==1
-	# Some program interrupts are suppressing (e.g. protection).
-	# We must also check the instruction after SIE in that case.
-	# do_protection_exception will rewind to .Lrewind_pad
-	jh	.+42
-	.else
-	jhe	.+42
-	.endif
-	lg	%r14,__SF_EMPTY(%r15)		# get control block pointer
-	LPP	__SF_EMPTY+16(%r15)		# set host id
-	ni	__SIE_PROG0C+3(%r14),0xfe	# no longer in SIE
-	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
-	larl	%r9,sie_exit			# skip forward to sie_exit
-	mvi	__SF_EMPTY+31(%r15),\reason	# set exit reason
-#endif
-	.endm
-
-	.macro	CHECK_STACK stacksize,savearea
-#ifdef CONFIG_CHECK_STACK
-	tml	%r15,\stacksize - CONFIG_STACK_GUARD
-	lghi	%r14,\savearea
-	jz	stack_overflow
-#endif
-	.endm
-
-	.macro	SWITCH_ASYNC savearea,stack,shift
-	tmhh	%r8,0x0001		# interrupting from user ?
-	jnz	1f
-	lgr	%r14,%r9
-	slg	%r14,BASED(.Lcritical_start)
-	clg	%r14,BASED(.Lcritical_length)
-	jhe	0f
-	lghi	%r11,\savearea		# inside critical section, do cleanup
-	brasl	%r14,cleanup_critical
-	tmhh	%r8,0x0001		# retest problem state after cleanup
-	jnz	1f
-0:	lg	%r14,\stack		# are we already on the target stack?
-	slgr	%r14,%r15
-	srag	%r14,%r14,\shift
-	jnz	1f
-	CHECK_STACK 1<<\shift,\savearea
-	aghi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
-	j	2f
-1:	lg	%r15,\stack		# load target stack
-2:	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	.endm
-
-	.macro UPDATE_VTIME scratch,enter_timer
-	lg	\scratch,__LC_EXIT_TIMER
-	slg	\scratch,\enter_timer
-	alg	\scratch,__LC_USER_TIMER
-	stg	\scratch,__LC_USER_TIMER
-	lg	\scratch,__LC_LAST_UPDATE_TIMER
-	slg	\scratch,__LC_EXIT_TIMER
-	alg	\scratch,__LC_SYSTEM_TIMER
-	stg	\scratch,__LC_SYSTEM_TIMER
-	mvc	__LC_LAST_UPDATE_TIMER(8),\enter_timer
-	.endm
-
-	.macro	LAST_BREAK scratch
-	srag	\scratch,%r10,23
-	jz	.+10
-	stg	%r10,__TI_last_break(%r12)
-	.endm
-
-	.macro REENABLE_IRQS
-	stg	%r8,__LC_RETURN_PSW
-	ni	__LC_RETURN_PSW,0xbf
-	ssm	__LC_RETURN_PSW
-	.endm
-
-	.macro STCK savearea
-#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
-	.insn	s,0xb27c0000,\savearea		# store clock fast
-#else
-	.insn	s,0xb2050000,\savearea		# store clock
-#endif
-	.endm
-
-	.section .kprobes.text, "ax"
-
-/*
- * Scheduler resume function, called by switch_to
- *  gpr2 = (task_struct *) prev
- *  gpr3 = (task_struct *) next
- * Returns:
- *  gpr2 = prev
- */
-ENTRY(__switch_to)
-	stmg	%r6,%r15,__SF_GPRS(%r15)	# store gprs of prev task
-	stg	%r15,__THREAD_ksp(%r2)		# store kernel stack of prev
-	lg	%r4,__THREAD_info(%r2)		# get thread_info of prev
-	lg	%r5,__THREAD_info(%r3)		# get thread_info of next
-	lgr	%r15,%r5
-	aghi	%r15,STACK_INIT			# end of kernel stack of next
-	stg	%r3,__LC_CURRENT		# store task struct of next
-	stg	%r5,__LC_THREAD_INFO		# store thread info of next
-	stg	%r15,__LC_KERNEL_STACK		# store end of kernel stack
-	lctl	%c4,%c4,__TASK_pid(%r3)		# load pid to control reg. 4
-	mvc	__LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
-	lg	%r15,__THREAD_ksp(%r3)		# load kernel stack of next
-	lmg	%r6,%r15,__SF_GPRS(%r15)	# load gprs of next task
-	br	%r14
-
-.L__critical_start:
-/*
- * SVC interrupt handler routine. System calls are synchronous events and
- * are executed with interrupts enabled.
- */
-
-ENTRY(system_call)
-	stpt	__LC_SYNC_ENTER_TIMER
-.Lsysc_stmg:
-	stmg	%r8,%r15,__LC_SAVE_AREA_SYNC
-	lg	%r10,__LC_LAST_BREAK
-	lg	%r12,__LC_THREAD_INFO
-	lghi	%r14,_PIF_SYSCALL
-.Lsysc_per:
-	lg	%r15,__LC_KERNEL_STACK
-	la	%r11,STACK_FRAME_OVERHEAD(%r15)	# pointer to pt_regs
-.Lsysc_vtime:
-	UPDATE_VTIME %r13,__LC_SYNC_ENTER_TIMER
-	LAST_BREAK %r13
-	stmg	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
-	mvc	__PT_PSW(16,%r11),__LC_SVC_OLD_PSW
-	mvc	__PT_INT_CODE(4,%r11),__LC_SVC_ILC
-	stg	%r14,__PT_FLAGS(%r11)
-.Lsysc_do_svc:
-	lg	%r10,__TI_sysc_table(%r12)	# address of system call table
-	llgh	%r8,__PT_INT_CODE+2(%r11)
-	slag	%r8,%r8,2			# shift and test for svc 0
-	jnz	.Lsysc_nr_ok
-	# svc 0: system call number in %r1
-	llgfr	%r1,%r1				# clear high word in r1
-	cghi	%r1,NR_syscalls
-	jnl	.Lsysc_nr_ok
-	sth	%r1,__PT_INT_CODE+2(%r11)
-	slag	%r8,%r1,2
-.Lsysc_nr_ok:
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-	stg	%r2,__PT_ORIG_GPR2(%r11)
-	stg	%r7,STACK_FRAME_OVERHEAD(%r15)
-	lgf	%r9,0(%r8,%r10)			# get system call add.
-	tm	__TI_flags+7(%r12),_TIF_TRACE
-	jnz	.Lsysc_tracesys
-	basr	%r14,%r9			# call sys_xxxx
-	stg	%r2,__PT_R2(%r11)		# store return value
-
-.Lsysc_return:
-	LOCKDEP_SYS_EXIT
-.Lsysc_tif:
-	tm	__PT_PSW+1(%r11),0x01		# returning to user ?
-	jno	.Lsysc_restore
-	tm	__PT_FLAGS+7(%r11),_PIF_WORK
-	jnz	.Lsysc_work
-	tm	__TI_flags+7(%r12),_TIF_WORK
-	jnz	.Lsysc_work			# check for work
-	tm	__LC_CPU_FLAGS+7,_CIF_WORK
-	jnz	.Lsysc_work
-.Lsysc_restore:
-	lg	%r14,__LC_VDSO_PER_CPU
-	lmg	%r0,%r10,__PT_R0(%r11)
-	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r11)
-	stpt	__LC_EXIT_TIMER
-	mvc	__VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
-	lmg	%r11,%r15,__PT_R11(%r11)
-	lpswe	__LC_RETURN_PSW
-.Lsysc_done:
-
-#
-# One of the work bits is on. Find out which one.
-#
-.Lsysc_work:
-	tm	__LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
-	jo	.Lsysc_mcck_pending
-	tm	__TI_flags+7(%r12),_TIF_NEED_RESCHED
-	jo	.Lsysc_reschedule
-#ifdef CONFIG_UPROBES
-	tm	__TI_flags+7(%r12),_TIF_UPROBE
-	jo	.Lsysc_uprobe_notify
-#endif
-	tm	__PT_FLAGS+7(%r11),_PIF_PER_TRAP
-	jo	.Lsysc_singlestep
-	tm	__TI_flags+7(%r12),_TIF_SIGPENDING
-	jo	.Lsysc_sigpending
-	tm	__TI_flags+7(%r12),_TIF_NOTIFY_RESUME
-	jo	.Lsysc_notify_resume
-	tm	__LC_CPU_FLAGS+7,_CIF_ASCE
-	jo	.Lsysc_uaccess
-	j	.Lsysc_return		# beware of critical section cleanup
-
-#
-# _TIF_NEED_RESCHED is set, call schedule
-#
-.Lsysc_reschedule:
-	larl	%r14,.Lsysc_return
-	jg	schedule
-
-#
-# _CIF_MCCK_PENDING is set, call handler
-#
-.Lsysc_mcck_pending:
-	larl	%r14,.Lsysc_return
-	jg	s390_handle_mcck	# TIF bit will be cleared by handler
-
-#
-# _CIF_ASCE is set, load user space asce
-#
-.Lsysc_uaccess:
-	ni	__LC_CPU_FLAGS+7,255-_CIF_ASCE
-	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
-	j	.Lsysc_return
-
-#
-# _TIF_SIGPENDING is set, call do_signal
-#
-.Lsysc_sigpending:
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	brasl	%r14,do_signal
-	tm	__PT_FLAGS+7(%r11),_PIF_SYSCALL
-	jno	.Lsysc_return
-	lmg	%r2,%r7,__PT_R2(%r11)	# load svc arguments
-	lg	%r10,__TI_sysc_table(%r12)	# address of system call table
-	lghi	%r8,0			# svc 0 returns -ENOSYS
-	llgh	%r1,__PT_INT_CODE+2(%r11)	# load new svc number
-	cghi	%r1,NR_syscalls
-	jnl	.Lsysc_nr_ok		# invalid svc number -> do svc 0
-	slag	%r8,%r1,2
-	j	.Lsysc_nr_ok		# restart svc
-
-#
-# _TIF_NOTIFY_RESUME is set, call do_notify_resume
-#
-.Lsysc_notify_resume:
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	larl	%r14,.Lsysc_return
-	jg	do_notify_resume
-
-#
-# _TIF_UPROBE is set, call uprobe_notify_resume
-#
-#ifdef CONFIG_UPROBES
-.Lsysc_uprobe_notify:
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	larl	%r14,.Lsysc_return
-	jg	uprobe_notify_resume
-#endif
-
-#
-# _PIF_PER_TRAP is set, call do_per_trap
-#
-.Lsysc_singlestep:
-	ni	__PT_FLAGS+7(%r11),255-_PIF_PER_TRAP
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	larl	%r14,.Lsysc_return
-	jg	do_per_trap
-
-#
-# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
-# and after the system call
-#
-.Lsysc_tracesys:
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	la	%r3,0
-	llgh	%r0,__PT_INT_CODE+2(%r11)
-	stg	%r0,__PT_R2(%r11)
-	brasl	%r14,do_syscall_trace_enter
-	lghi	%r0,NR_syscalls
-	clgr	%r0,%r2
-	jnh	.Lsysc_tracenogo
-	sllg	%r8,%r2,2
-	lgf	%r9,0(%r8,%r10)
-.Lsysc_tracego:
-	lmg	%r3,%r7,__PT_R3(%r11)
-	stg	%r7,STACK_FRAME_OVERHEAD(%r15)
-	lg	%r2,__PT_ORIG_GPR2(%r11)
-	basr	%r14,%r9		# call sys_xxx
-	stg	%r2,__PT_R2(%r11)	# store return value
-.Lsysc_tracenogo:
-	tm	__TI_flags+7(%r12),_TIF_TRACE
-	jz	.Lsysc_return
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	larl	%r14,.Lsysc_return
-	jg	do_syscall_trace_exit
-
-#
-# a new process exits the kernel with ret_from_fork
-#
-ENTRY(ret_from_fork)
-	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	lg	%r12,__LC_THREAD_INFO
-	brasl	%r14,schedule_tail
-	TRACE_IRQS_ON
-	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	tm	__PT_PSW+1(%r11),0x01	# forking a kernel thread ?
-	jne	.Lsysc_tracenogo
-	# it's a kernel thread
-	lmg	%r9,%r10,__PT_R9(%r11)	# load gprs
-ENTRY(kernel_thread_starter)
-	la	%r2,0(%r10)
-	basr	%r14,%r9
-	j	.Lsysc_tracenogo
-
-/*
- * Program check handler routine
- */
-
-ENTRY(pgm_check_handler)
-	stpt	__LC_SYNC_ENTER_TIMER
-	stmg	%r8,%r15,__LC_SAVE_AREA_SYNC
-	lg	%r10,__LC_LAST_BREAK
-	lg	%r12,__LC_THREAD_INFO
-	larl	%r13,system_call
-	lmg	%r8,%r9,__LC_PGM_OLD_PSW
-	HANDLE_SIE_INTERCEPT %r14,1
-	tmhh	%r8,0x0001		# test problem state bit
-	jnz	1f			# -> fault in user space
-	tmhh	%r8,0x4000		# PER bit set in old PSW ?
-	jnz	0f			# -> enabled, can't be a double fault
-	tm	__LC_PGM_ILC+3,0x80	# check for per exception
-	jnz	.Lpgm_svcper		# -> single stepped svc
-0:	CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
-	aghi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
-	j	2f
-1:	UPDATE_VTIME %r14,__LC_SYNC_ENTER_TIMER
-	LAST_BREAK %r14
-	lg	%r15,__LC_KERNEL_STACK
-	lg	%r14,__TI_task(%r12)
-	lghi	%r13,__LC_PGM_TDB
-	tm	__LC_PGM_ILC+2,0x02	# check for transaction abort
-	jz	2f
-	mvc	__THREAD_trap_tdb(256,%r14),0(%r13)
-2:	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	stmg	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
-	stmg	%r8,%r9,__PT_PSW(%r11)
-	mvc	__PT_INT_CODE(4,%r11),__LC_PGM_ILC
-	mvc	__PT_INT_PARM_LONG(8,%r11),__LC_TRANS_EXC_CODE
-	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
-	stg	%r10,__PT_ARGS(%r11)
-	tm	__LC_PGM_ILC+3,0x80	# check for per exception
-	jz	0f
-	tmhh	%r8,0x0001		# kernel per event ?
-	jz	.Lpgm_kprobe
-	oi	__PT_FLAGS+7(%r11),_PIF_PER_TRAP
-	mvc	__THREAD_per_address(8,%r14),__LC_PER_ADDRESS
-	mvc	__THREAD_per_cause(2,%r14),__LC_PER_CODE
-	mvc	__THREAD_per_paid(1,%r14),__LC_PER_ACCESS_ID
-0:	REENABLE_IRQS
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-	larl	%r1,pgm_check_table
-	llgh	%r10,__PT_INT_CODE+2(%r11)
-	nill	%r10,0x007f
-	sll	%r10,2
-	je	.Lsysc_return
-	lgf	%r1,0(%r10,%r1)		# load address of handler routine
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	basr	%r14,%r1		# branch to interrupt-handler
-	j	.Lsysc_return
-
-#
-# PER event in supervisor state, must be kprobes
-#
-.Lpgm_kprobe:
-	REENABLE_IRQS
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	brasl	%r14,do_per_trap
-	j	.Lsysc_return
-
-#
-# single stepped system call
-#
-.Lpgm_svcper:
-	mvc	__LC_RETURN_PSW(8),__LC_SVC_NEW_PSW
-	larl	%r14,.Lsysc_per
-	stg	%r14,__LC_RETURN_PSW+8
-	lghi	%r14,_PIF_SYSCALL | _PIF_PER_TRAP
-	lpswe	__LC_RETURN_PSW		# branch to .Lsysc_per and enable irqs
-
-/*
- * IO interrupt handler routine
- */
-ENTRY(io_int_handler)
-	STCK	__LC_INT_CLOCK
-	stpt	__LC_ASYNC_ENTER_TIMER
-	stmg	%r8,%r15,__LC_SAVE_AREA_ASYNC
-	lg	%r10,__LC_LAST_BREAK
-	lg	%r12,__LC_THREAD_INFO
-	larl	%r13,system_call
-	lmg	%r8,%r9,__LC_IO_OLD_PSW
-	HANDLE_SIE_INTERCEPT %r14,2
-	SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
-	tmhh	%r8,0x0001		# interrupting from user?
-	jz	.Lio_skip
-	UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
-	LAST_BREAK %r14
-.Lio_skip:
-	stmg	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
-	stmg	%r8,%r9,__PT_PSW(%r11)
-	mvc	__PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
-	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
-	TRACE_IRQS_OFF
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-.Lio_loop:
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	lghi	%r3,IO_INTERRUPT
-	tm	__PT_INT_CODE+8(%r11),0x80	# adapter interrupt ?
-	jz	.Lio_call
-	lghi	%r3,THIN_INTERRUPT
-.Lio_call:
-	brasl	%r14,do_IRQ
-	tm	__LC_MACHINE_FLAGS+6,0x10	# MACHINE_FLAG_LPAR
-	jz	.Lio_return
-	tpi	0
-	jz	.Lio_return
-	mvc	__PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
-	j	.Lio_loop
-.Lio_return:
-	LOCKDEP_SYS_EXIT
-	TRACE_IRQS_ON
-.Lio_tif:
-	tm	__TI_flags+7(%r12),_TIF_WORK
-	jnz	.Lio_work		# there is work to do (signals etc.)
-	tm	__LC_CPU_FLAGS+7,_CIF_WORK
-	jnz	.Lio_work
-.Lio_restore:
-	lg	%r14,__LC_VDSO_PER_CPU
-	lmg	%r0,%r10,__PT_R0(%r11)
-	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r11)
-	stpt	__LC_EXIT_TIMER
-	mvc	__VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
-	lmg	%r11,%r15,__PT_R11(%r11)
-	lpswe	__LC_RETURN_PSW
-.Lio_done:
-
-#
-# There is work todo, find out in which context we have been interrupted:
-# 1) if we return to user space we can do all _TIF_WORK work
-# 2) if we return to kernel code and kvm is enabled check if we need to
-#    modify the psw to leave SIE
-# 3) if we return to kernel code and preemptive scheduling is enabled check
-#    the preemption counter and if it is zero call preempt_schedule_irq
-# Before any work can be done, a switch to the kernel stack is required.
-#
-.Lio_work:
-	tm	__PT_PSW+1(%r11),0x01	# returning to user ?
-	jo	.Lio_work_user		# yes -> do resched & signal
-#ifdef CONFIG_PREEMPT
-	# check for preemptive scheduling
-	icm	%r0,15,__TI_precount(%r12)
-	jnz	.Lio_restore		# preemption is disabled
-	tm	__TI_flags+7(%r12),_TIF_NEED_RESCHED
-	jno	.Lio_restore
-	# switch to kernel stack
-	lg	%r1,__PT_R15(%r11)
-	aghi	%r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
-	mvc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
-	xc	__SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
-	la	%r11,STACK_FRAME_OVERHEAD(%r1)
-	lgr	%r15,%r1
-	# TRACE_IRQS_ON already done at .Lio_return, call
-	# TRACE_IRQS_OFF to keep things symmetrical
-	TRACE_IRQS_OFF
-	brasl	%r14,preempt_schedule_irq
-	j	.Lio_return
-#else
-	j	.Lio_restore
-#endif
-
-#
-# Need to do work before returning to userspace, switch to kernel stack
-#
-.Lio_work_user:
-	lg	%r1,__LC_KERNEL_STACK
-	mvc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
-	xc	__SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
-	la	%r11,STACK_FRAME_OVERHEAD(%r1)
-	lgr	%r15,%r1
-
-#
-# One of the work bits is on. Find out which one.
-#
-.Lio_work_tif:
-	tm	__LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
-	jo	.Lio_mcck_pending
-	tm	__TI_flags+7(%r12),_TIF_NEED_RESCHED
-	jo	.Lio_reschedule
-	tm	__TI_flags+7(%r12),_TIF_SIGPENDING
-	jo	.Lio_sigpending
-	tm	__TI_flags+7(%r12),_TIF_NOTIFY_RESUME
-	jo	.Lio_notify_resume
-	tm	__LC_CPU_FLAGS+7,_CIF_ASCE
-	jo	.Lio_uaccess
-	j	.Lio_return		# beware of critical section cleanup
-
-#
-# _CIF_MCCK_PENDING is set, call handler
-#
-.Lio_mcck_pending:
-	# TRACE_IRQS_ON already done at .Lio_return
-	brasl	%r14,s390_handle_mcck	# TIF bit will be cleared by handler
-	TRACE_IRQS_OFF
-	j	.Lio_return
-
-#
-# _CIF_ASCE is set, load user space asce
-#
-.Lio_uaccess:
-	ni	__LC_CPU_FLAGS+7,255-_CIF_ASCE
-	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
-	j	.Lio_return
-
-#
-# _TIF_NEED_RESCHED is set, call schedule
-#
-.Lio_reschedule:
-	# TRACE_IRQS_ON already done at .Lio_return
-	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	brasl	%r14,schedule		# call scheduler
-	ssm	__LC_PGM_NEW_PSW	# disable I/O and ext. interrupts
-	TRACE_IRQS_OFF
-	j	.Lio_return
-
-#
-# _TIF_SIGPENDING or is set, call do_signal
-#
-.Lio_sigpending:
-	# TRACE_IRQS_ON already done at .Lio_return
-	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	brasl	%r14,do_signal
-	ssm	__LC_PGM_NEW_PSW	# disable I/O and ext. interrupts
-	TRACE_IRQS_OFF
-	j	.Lio_return
-
-#
-# _TIF_NOTIFY_RESUME or is set, call do_notify_resume
-#
-.Lio_notify_resume:
-	# TRACE_IRQS_ON already done at .Lio_return
-	ssm	__LC_SVC_NEW_PSW	# reenable interrupts
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	brasl	%r14,do_notify_resume
-	ssm	__LC_PGM_NEW_PSW	# disable I/O and ext. interrupts
-	TRACE_IRQS_OFF
-	j	.Lio_return
-
-/*
- * External interrupt handler routine
- */
-ENTRY(ext_int_handler)
-	STCK	__LC_INT_CLOCK
-	stpt	__LC_ASYNC_ENTER_TIMER
-	stmg	%r8,%r15,__LC_SAVE_AREA_ASYNC
-	lg	%r10,__LC_LAST_BREAK
-	lg	%r12,__LC_THREAD_INFO
-	larl	%r13,system_call
-	lmg	%r8,%r9,__LC_EXT_OLD_PSW
-	HANDLE_SIE_INTERCEPT %r14,3
-	SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
-	tmhh	%r8,0x0001		# interrupting from user ?
-	jz	.Lext_skip
-	UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
-	LAST_BREAK %r14
-.Lext_skip:
-	stmg	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
-	stmg	%r8,%r9,__PT_PSW(%r11)
-	lghi	%r1,__LC_EXT_PARAMS2
-	mvc	__PT_INT_CODE(4,%r11),__LC_EXT_CPU_ADDR
-	mvc	__PT_INT_PARM(4,%r11),__LC_EXT_PARAMS
-	mvc	__PT_INT_PARM_LONG(8,%r11),0(%r1)
-	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
-	TRACE_IRQS_OFF
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	lghi	%r3,EXT_INTERRUPT
-	brasl	%r14,do_IRQ
-	j	.Lio_return
-
-/*
- * Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
- */
-ENTRY(psw_idle)
-	stg	%r3,__SF_EMPTY(%r15)
-	larl	%r1,.Lpsw_idle_lpsw+4
-	stg	%r1,__SF_EMPTY+8(%r15)
-	STCK	__CLOCK_IDLE_ENTER(%r2)
-	stpt	__TIMER_IDLE_ENTER(%r2)
-.Lpsw_idle_lpsw:
-	lpswe	__SF_EMPTY(%r15)
-	br	%r14
-.Lpsw_idle_end:
-
-.L__critical_end:
-
-/*
- * Machine check handler routines
- */
-ENTRY(mcck_int_handler)
-	STCK	__LC_MCCK_CLOCK
-	la	%r1,4095		# revalidate r1
-	spt	__LC_CPU_TIMER_SAVE_AREA-4095(%r1)	# revalidate cpu timer
-	lmg	%r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
-	lg	%r10,__LC_LAST_BREAK
-	lg	%r12,__LC_THREAD_INFO
-	larl	%r13,system_call
-	lmg	%r8,%r9,__LC_MCK_OLD_PSW
-	HANDLE_SIE_INTERCEPT %r14,4
-	tm	__LC_MCCK_CODE,0x80	# system damage?
-	jo	.Lmcck_panic		# yes -> rest of mcck code invalid
-	lghi	%r14,__LC_CPU_TIMER_SAVE_AREA
-	mvc	__LC_MCCK_ENTER_TIMER(8),0(%r14)
-	tm	__LC_MCCK_CODE+5,0x02	# stored cpu timer value valid?
-	jo	3f
-	la	%r14,__LC_SYNC_ENTER_TIMER
-	clc	0(8,%r14),__LC_ASYNC_ENTER_TIMER
-	jl	0f
-	la	%r14,__LC_ASYNC_ENTER_TIMER
-0:	clc	0(8,%r14),__LC_EXIT_TIMER
-	jl	1f
-	la	%r14,__LC_EXIT_TIMER
-1:	clc	0(8,%r14),__LC_LAST_UPDATE_TIMER
-	jl	2f
-	la	%r14,__LC_LAST_UPDATE_TIMER
-2:	spt	0(%r14)
-	mvc	__LC_MCCK_ENTER_TIMER(8),0(%r14)
-3:	tm	__LC_MCCK_CODE+2,0x09	# mwp + ia of old psw valid?
-	jno	.Lmcck_panic		# no -> skip cleanup critical
-	SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+64,__LC_PANIC_STACK,PAGE_SHIFT
-	tm	%r8,0x0001		# interrupting from user ?
-	jz	.Lmcck_skip
-	UPDATE_VTIME %r14,__LC_MCCK_ENTER_TIMER
-	LAST_BREAK %r14
-.Lmcck_skip:
-	lghi	%r14,__LC_GPREGS_SAVE_AREA+64
-	stmg	%r0,%r7,__PT_R0(%r11)
-	mvc	__PT_R8(64,%r11),0(%r14)
-	stmg	%r8,%r9,__PT_PSW(%r11)
-	xc	__PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	brasl	%r14,s390_do_machine_check
-	tm	__PT_PSW+1(%r11),0x01	# returning to user ?
-	jno	.Lmcck_return
-	lg	%r1,__LC_KERNEL_STACK	# switch to kernel stack
-	mvc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
-	xc	__SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
-	la	%r11,STACK_FRAME_OVERHEAD(%r1)
-	lgr	%r15,%r1
-	ssm	__LC_PGM_NEW_PSW	# turn dat on, keep irqs off
-	tm	__LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
-	jno	.Lmcck_return
-	TRACE_IRQS_OFF
-	brasl	%r14,s390_handle_mcck
-	TRACE_IRQS_ON
-.Lmcck_return:
-	lg	%r14,__LC_VDSO_PER_CPU
-	lmg	%r0,%r10,__PT_R0(%r11)
-	mvc	__LC_RETURN_MCCK_PSW(16),__PT_PSW(%r11) # move return PSW
-	tm	__LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
-	jno	0f
-	stpt	__LC_EXIT_TIMER
-	mvc	__VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
-0:	lmg	%r11,%r15,__PT_R11(%r11)
-	lpswe	__LC_RETURN_MCCK_PSW
-
-.Lmcck_panic:
-	lg	%r14,__LC_PANIC_STACK
-	slgr	%r14,%r15
-	srag	%r14,%r14,PAGE_SHIFT
-	jz	0f
-	lg	%r15,__LC_PANIC_STACK
-0:	aghi	%r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
-	j	.Lmcck_skip
-
-#
-# PSW restart interrupt handler
-#
-ENTRY(restart_int_handler)
-	stg	%r15,__LC_SAVE_AREA_RESTART
-	lg	%r15,__LC_RESTART_STACK
-	aghi	%r15,-__PT_SIZE			# create pt_regs on stack
-	xc	0(__PT_SIZE,%r15),0(%r15)
-	stmg	%r0,%r14,__PT_R0(%r15)
-	mvc	__PT_R15(8,%r15),__LC_SAVE_AREA_RESTART
-	mvc	__PT_PSW(16,%r15),__LC_RST_OLD_PSW # store restart old psw
-	aghi	%r15,-STACK_FRAME_OVERHEAD	# create stack frame on stack
-	xc	0(STACK_FRAME_OVERHEAD,%r15),0(%r15)
-	lg	%r1,__LC_RESTART_FN		# load fn, parm & source cpu
-	lg	%r2,__LC_RESTART_DATA
-	lg	%r3,__LC_RESTART_SOURCE
-	ltgr	%r3,%r3				# test source cpu address
-	jm	1f				# negative -> skip source stop
-0:	sigp	%r4,%r3,SIGP_SENSE		# sigp sense to source cpu
-	brc	10,0b				# wait for status stored
-1:	basr	%r14,%r1			# call function
-	stap	__SF_EMPTY(%r15)		# store cpu address
-	llgh	%r3,__SF_EMPTY(%r15)
-2:	sigp	%r4,%r3,SIGP_STOP		# sigp stop to current cpu
-	brc	2,2b
-3:	j	3b
-
-	.section .kprobes.text, "ax"
-
-#ifdef CONFIG_CHECK_STACK
-/*
- * The synchronous or the asynchronous stack overflowed. We are dead.
- * No need to properly save the registers, we are going to panic anyway.
- * Setup a pt_regs so that show_trace can provide a good call trace.
- */
-stack_overflow:
-	lg	%r15,__LC_PANIC_STACK	# change to panic stack
-	la	%r11,STACK_FRAME_OVERHEAD(%r15)
-	stmg	%r0,%r7,__PT_R0(%r11)
-	stmg	%r8,%r9,__PT_PSW(%r11)
-	mvc	__PT_R8(64,%r11),0(%r14)
-	stg	%r10,__PT_ORIG_GPR2(%r11) # store last break to orig_gpr2
-	xc	__SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-	lgr	%r2,%r11		# pass pointer to pt_regs
-	jg	kernel_stack_overflow
-#endif
-
-	.align	8
-.Lcleanup_table:
-	.quad	system_call
-	.quad	.Lsysc_do_svc
-	.quad	.Lsysc_tif
-	.quad	.Lsysc_restore
-	.quad	.Lsysc_done
-	.quad	.Lio_tif
-	.quad	.Lio_restore
-	.quad	.Lio_done
-	.quad	psw_idle
-	.quad	.Lpsw_idle_end
-
-cleanup_critical:
-	clg	%r9,BASED(.Lcleanup_table)	# system_call
-	jl	0f
-	clg	%r9,BASED(.Lcleanup_table+8)	# .Lsysc_do_svc
-	jl	.Lcleanup_system_call
-	clg	%r9,BASED(.Lcleanup_table+16)	# .Lsysc_tif
-	jl	0f
-	clg	%r9,BASED(.Lcleanup_table+24)	# .Lsysc_restore
-	jl	.Lcleanup_sysc_tif
-	clg	%r9,BASED(.Lcleanup_table+32)	# .Lsysc_done
-	jl	.Lcleanup_sysc_restore
-	clg	%r9,BASED(.Lcleanup_table+40)	# .Lio_tif
-	jl	0f
-	clg	%r9,BASED(.Lcleanup_table+48)	# .Lio_restore
-	jl	.Lcleanup_io_tif
-	clg	%r9,BASED(.Lcleanup_table+56)	# .Lio_done
-	jl	.Lcleanup_io_restore
-	clg	%r9,BASED(.Lcleanup_table+64)	# psw_idle
-	jl	0f
-	clg	%r9,BASED(.Lcleanup_table+72)	# .Lpsw_idle_end
-	jl	.Lcleanup_idle
-0:	br	%r14
-
-
-.Lcleanup_system_call:
-	# check if stpt has been executed
-	clg	%r9,BASED(.Lcleanup_system_call_insn)
-	jh	0f
-	mvc	__LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
-	cghi	%r11,__LC_SAVE_AREA_ASYNC
-	je	0f
-	mvc	__LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
-0:	# check if stmg has been executed
-	clg	%r9,BASED(.Lcleanup_system_call_insn+8)
-	jh	0f
-	mvc	__LC_SAVE_AREA_SYNC(64),0(%r11)
-0:	# check if base register setup + TIF bit load has been done
-	clg	%r9,BASED(.Lcleanup_system_call_insn+16)
-	jhe	0f
-	# set up saved registers r10 and r12
-	stg	%r10,16(%r11)		# r10 last break
-	stg	%r12,32(%r11)		# r12 thread-info pointer
-0:	# check if the user time update has been done
-	clg	%r9,BASED(.Lcleanup_system_call_insn+24)
-	jh	0f
-	lg	%r15,__LC_EXIT_TIMER
-	slg	%r15,__LC_SYNC_ENTER_TIMER
-	alg	%r15,__LC_USER_TIMER
-	stg	%r15,__LC_USER_TIMER
-0:	# check if the system time update has been done
-	clg	%r9,BASED(.Lcleanup_system_call_insn+32)
-	jh	0f
-	lg	%r15,__LC_LAST_UPDATE_TIMER
-	slg	%r15,__LC_EXIT_TIMER
-	alg	%r15,__LC_SYSTEM_TIMER
-	stg	%r15,__LC_SYSTEM_TIMER
-0:	# update accounting time stamp
-	mvc	__LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-	# do LAST_BREAK
-	lg	%r9,16(%r11)
-	srag	%r9,%r9,23
-	jz	0f
-	mvc	__TI_last_break(8,%r12),16(%r11)
-0:	# set up saved register r11
-	lg	%r15,__LC_KERNEL_STACK
-	la	%r9,STACK_FRAME_OVERHEAD(%r15)
-	stg	%r9,24(%r11)		# r11 pt_regs pointer
-	# fill pt_regs
-	mvc	__PT_R8(64,%r9),__LC_SAVE_AREA_SYNC
-	stmg	%r0,%r7,__PT_R0(%r9)
-	mvc	__PT_PSW(16,%r9),__LC_SVC_OLD_PSW
-	mvc	__PT_INT_CODE(4,%r9),__LC_SVC_ILC
-	xc	__PT_FLAGS(8,%r9),__PT_FLAGS(%r9)
-	mvi	__PT_FLAGS+7(%r9),_PIF_SYSCALL
-	# setup saved register r15
-	stg	%r15,56(%r11)		# r15 stack pointer
-	# set new psw address and exit
-	larl	%r9,.Lsysc_do_svc
-	br	%r14
-.Lcleanup_system_call_insn:
-	.quad	system_call
-	.quad	.Lsysc_stmg
-	.quad	.Lsysc_per
-	.quad	.Lsysc_vtime+18
-	.quad	.Lsysc_vtime+42
-
-.Lcleanup_sysc_tif:
-	larl	%r9,.Lsysc_tif
-	br	%r14
-
-.Lcleanup_sysc_restore:
-	clg	%r9,BASED(.Lcleanup_sysc_restore_insn)
-	je	0f
-	lg	%r9,24(%r11)		# get saved pointer to pt_regs
-	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r9)
-	mvc	0(64,%r11),__PT_R8(%r9)
-	lmg	%r0,%r7,__PT_R0(%r9)
-0:	lmg	%r8,%r9,__LC_RETURN_PSW
-	br	%r14
-.Lcleanup_sysc_restore_insn:
-	.quad	.Lsysc_done - 4
-
-.Lcleanup_io_tif:
-	larl	%r9,.Lio_tif
-	br	%r14
-
-.Lcleanup_io_restore:
-	clg	%r9,BASED(.Lcleanup_io_restore_insn)
-	je	0f
-	lg	%r9,24(%r11)		# get saved r11 pointer to pt_regs
-	mvc	__LC_RETURN_PSW(16),__PT_PSW(%r9)
-	mvc	0(64,%r11),__PT_R8(%r9)
-	lmg	%r0,%r7,__PT_R0(%r9)
-0:	lmg	%r8,%r9,__LC_RETURN_PSW
-	br	%r14
-.Lcleanup_io_restore_insn:
-	.quad	.Lio_done - 4
-
-.Lcleanup_idle:
-	# copy interrupt clock & cpu timer
-	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
-	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
-	cghi	%r11,__LC_SAVE_AREA_ASYNC
-	je	0f
-	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
-	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
-0:	# check if stck & stpt have been executed
-	clg	%r9,BASED(.Lcleanup_idle_insn)
-	jhe	1f
-	mvc	__CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
-	mvc	__TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r2)
-1:	# account system time going idle
-	lg	%r9,__LC_STEAL_TIMER
-	alg	%r9,__CLOCK_IDLE_ENTER(%r2)
-	slg	%r9,__LC_LAST_UPDATE_CLOCK
-	stg	%r9,__LC_STEAL_TIMER
-	mvc	__LC_LAST_UPDATE_CLOCK(8),__CLOCK_IDLE_EXIT(%r2)
-	lg	%r9,__LC_SYSTEM_TIMER
-	alg	%r9,__LC_LAST_UPDATE_TIMER
-	slg	%r9,__TIMER_IDLE_ENTER(%r2)
-	stg	%r9,__LC_SYSTEM_TIMER
-	mvc	__LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
-	# prepare return psw
-	nihh	%r8,0xfcfd		# clear irq & wait state bits
-	lg	%r9,48(%r11)		# return from psw_idle
-	br	%r14
-.Lcleanup_idle_insn:
-	.quad	.Lpsw_idle_lpsw
-
-/*
- * Integer constants
- */
-	.align	8
-.Lcritical_start:
-	.quad	.L__critical_start
-.Lcritical_length:
-	.quad	.L__critical_end - .L__critical_start
-
-
-#if IS_ENABLED(CONFIG_KVM)
-/*
- * sie64a calling convention:
- * %r2 pointer to sie control block
- * %r3 guest register save area
- */
-ENTRY(sie64a)
-	stmg	%r6,%r14,__SF_GPRS(%r15)	# save kernel registers
-	stg	%r2,__SF_EMPTY(%r15)		# save control block pointer
-	stg	%r3,__SF_EMPTY+8(%r15)		# save guest register save area
-	xc	__SF_EMPTY+16(16,%r15),__SF_EMPTY+16(%r15) # host id & reason
-	lmg	%r0,%r13,0(%r3)			# load guest gprs 0-13
-	lg	%r14,__LC_GMAP			# get gmap pointer
-	ltgr	%r14,%r14
-	jz	.Lsie_gmap
-	lctlg	%c1,%c1,__GMAP_ASCE(%r14)	# load primary asce
-.Lsie_gmap:
-	lg	%r14,__SF_EMPTY(%r15)		# get control block pointer
-	oi	__SIE_PROG0C+3(%r14),1		# we are going into SIE now
-	tm	__SIE_PROG20+3(%r14),1		# last exit...
-	jnz	.Lsie_done
-	LPP	__SF_EMPTY(%r15)		# set guest id
-	sie	0(%r14)
-.Lsie_done:
-	LPP	__SF_EMPTY+16(%r15)		# set host id
-	ni	__SIE_PROG0C+3(%r14),0xfe	# no longer in SIE
-	lctlg	%c1,%c1,__LC_USER_ASCE		# load primary asce
-# some program checks are suppressing. C code (e.g. do_protection_exception)
-# will rewind the PSW by the ILC, which is 4 bytes in case of SIE. Other
-# instructions between sie64a and .Lsie_done should not cause program
-# interrupts. So lets use a nop (47 00 00 00) as a landing pad.
-# See also HANDLE_SIE_INTERCEPT
-.Lrewind_pad:
-	nop	0
-	.globl sie_exit
-sie_exit:
-	lg	%r14,__SF_EMPTY+8(%r15)		# load guest register save area
-	stmg	%r0,%r13,0(%r14)		# save guest gprs 0-13
-	lmg	%r6,%r14,__SF_GPRS(%r15)	# restore kernel registers
-	lg	%r2,__SF_EMPTY+24(%r15)		# return exit reason code
-	br	%r14
-.Lsie_fault:
-	lghi	%r14,-EFAULT
-	stg	%r14,__SF_EMPTY+24(%r15)	# set exit reason code
-	j	sie_exit
-
-	.align	8
-.Lsie_critical:
-	.quad	.Lsie_gmap
-.Lsie_critical_length:
-	.quad	.Lsie_done - .Lsie_gmap
-
-	EX_TABLE(.Lrewind_pad,.Lsie_fault)
-	EX_TABLE(sie_exit,.Lsie_fault)
-#endif
-
-		.section .rodata, "a"
-#define SYSCALL(esa,esame,emu)	.long esame
-	.globl	sys_call_table
-sys_call_table:
-#include "syscalls.S"
-#undef SYSCALL
-
-#ifdef CONFIG_COMPAT
-
-#define SYSCALL(esa,esame,emu)	.long emu
-	.globl	sys_call_table_emu
-sys_call_table_emu:
-#include "syscalls.S"
-#undef SYSCALL
-#endif

arch/s390/kernel/ftrace.c

@@ -130,8 +130,7 @@ int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
 	/* Verify that the to be replaced code matches what we expect. */
 	if (memcmp(&orig, &old, sizeof(old)))
 		return -EINVAL;
-	if (probe_kernel_write((void *) rec->ip, &new, sizeof(new)))
-		return -EPERM;
+	s390_kernel_write((void *) rec->ip, &new, sizeof(new));
 	return 0;
 }
 
@@ -159,8 +158,7 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 	/* Verify that the to be replaced code matches what we expect. */
 	if (memcmp(&orig, &old, sizeof(old)))
 		return -EINVAL;
-	if (probe_kernel_write((void *) rec->ip, &new, sizeof(new)))
-		return -EPERM;
+	s390_kernel_write((void *) rec->ip, &new, sizeof(new));
 	return 0;
 }
 
@@ -231,14 +229,16 @@ int ftrace_enable_ftrace_graph_caller(void)
 {
 	u8 op = 0x04; /* set mask field to zero */
 
-	return probe_kernel_write(__va(ftrace_graph_caller)+1, &op, sizeof(op));
+	s390_kernel_write(__va(ftrace_graph_caller)+1, &op, sizeof(op));
+	return 0;
 }
 
 int ftrace_disable_ftrace_graph_caller(void)
 {
 	u8 op = 0xf4; /* set mask field to all ones */
 
-	return probe_kernel_write(__va(ftrace_graph_caller)+1, &op, sizeof(op));
+	s390_kernel_write(__va(ftrace_graph_caller)+1, &op, sizeof(op));
+	return 0;
 }
 
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */

arch/s390/kernel/head.S

@@ -27,11 +27,7 @@
 #include <asm/thread_info.h>
 #include <asm/page.h>
 
-#ifdef CONFIG_64BIT
 #define ARCH_OFFSET	4
-#else
-#define ARCH_OFFSET	0
-#endif
 
 __HEAD
 
@@ -67,7 +63,6 @@ __HEAD
 # subroutine to set architecture mode
 #
 .Lsetmode:
-#ifdef CONFIG_64BIT
 	mvi	__LC_AR_MODE_ID,1	# set esame flag
 	slr	%r0,%r0 		# set cpuid to zero
 	lhi	%r1,2			# mode 2 = esame (dump)
@@ -76,16 +71,12 @@ __HEAD
 	.fill	16,4,0x0
 0:	lmh	%r0,%r15,0(%r13)	# clear high-order half of gprs
 	sam31				# switch to 31 bit addressing mode
-#else
-	mvi	__LC_AR_MODE_ID,0	# set ESA flag (mode 0)
-#endif
 	br	%r14
 
 #
 # subroutine to wait for end I/O
 #
 .Lirqwait:
-#ifdef CONFIG_64BIT
 	mvc	0x1f0(16),.Lnewpsw	# set up IO interrupt psw
 	lpsw	.Lwaitpsw
 .Lioint:
@@ -93,15 +84,6 @@ __HEAD
 	.align	8
 .Lnewpsw:
 	.quad	0x0000000080000000,.Lioint
-#else
-	mvc	0x78(8),.Lnewpsw	# set up IO interrupt psw
-	lpsw	.Lwaitpsw
-.Lioint:
-	br	%r14
-	.align	8
-.Lnewpsw:
-	.long	0x00080000,0x80000000+.Lioint
-#endif
 .Lwaitpsw:
 	.long	0x020a0000,0x80000000+.Lioint
 
@@ -375,7 +357,6 @@ ENTRY(startup)
 ENTRY(startup_kdump)
 	j	.Lep_startup_kdump
 .Lep_startup_normal:
-#ifdef CONFIG_64BIT
 	mvi	__LC_AR_MODE_ID,1	# set esame flag
 	slr	%r0,%r0 		# set cpuid to zero
 	lhi	%r1,2			# mode 2 = esame (dump)
@@ -384,9 +365,6 @@ ENTRY(startup_kdump)
 	.fill	16,4,0x0
 0:	lmh	%r0,%r15,0(%r13)	# clear high-order half of gprs
 	sam31				# switch to 31 bit addressing mode
-#else
-	mvi	__LC_AR_MODE_ID,0	# set ESA flag (mode 0)
-#endif
 	basr	%r13,0			# get base
 .LPG0:
 	xc	0x200(256),0x200	# partially clear lowcore
@@ -396,7 +374,6 @@ ENTRY(startup_kdump)
 	spt	6f-.LPG0(%r13)
 	mvc	__LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13)
 	xc	__LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
-#ifndef CONFIG_MARCH_G5
 	# check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
 	.insn	s,0xb2b10000,0		# store facilities @ __LC_STFL_FAC_LIST
 	tm	__LC_STFL_FAC_LIST,0x01	# stfle available ?
@@ -435,7 +412,6 @@ ENTRY(startup_kdump)
 # the kernel will crash. Format is number of facility words with bits set,
 # followed by the facility words.
 
-#if defined(CONFIG_64BIT)
 #if defined(CONFIG_MARCH_Z13)
 	.long 3, 0xc100eff2, 0xf46ce800, 0x00400000
 #elif defined(CONFIG_MARCH_ZEC12)
@@ -451,35 +427,10 @@ ENTRY(startup_kdump)
 #elif defined(CONFIG_MARCH_Z900)
 	.long 1, 0xc0000000
 #endif
-#else
-#if defined(CONFIG_MARCH_ZEC12)
-	.long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z196)
-	.long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z10)
-	.long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z9_109)
-	.long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z990)
-	.long 1, 0x80002000
-#elif defined(CONFIG_MARCH_Z900)
-	.long 1, 0x80000000
-#endif
-#endif
 4:
-#endif
-
-#ifdef CONFIG_64BIT
 	/* Continue with 64bit startup code in head64.S */
 	sam64				# switch to 64 bit mode
 	jg	startup_continue
-#else
-	/* Continue with 31bit startup code in head31.S */
-	l	%r13,5f-.LPG0(%r13)
-	b	0(%r13)
-	.align	8
-5:	.long	startup_continue
-#endif
 
 	.align	8
 6:	.long	0x7fffffff,0xffffffff

arch/s390/kernel/head31.S

@@ -1,106 +0,0 @@
-/*
- * Copyright IBM Corp. 2005, 2010
- *
- *   Author(s):	Hartmut Penner <hp@de.ibm.com>
- *		Martin Schwidefsky <schwidefsky@de.ibm.com>
- *		Rob van der Heij <rvdhei@iae.nl>
- *		Heiko Carstens <heiko.carstens@de.ibm.com>
- *
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-#include <asm/page.h>
-
-__HEAD
-ENTRY(startup_continue)
-	basr	%r13,0			# get base
-.LPG1:
-
-	l	%r1,.Lbase_cc-.LPG1(%r13)
-	mvc	0(8,%r1),__LC_LAST_UPDATE_CLOCK
-	lctl	%c0,%c15,.Lctl-.LPG1(%r13) # load control registers
-	l	%r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
-					# move IPL device to lowcore
-#
-# Setup stack
-#
-	l	%r15,.Linittu-.LPG1(%r13)
-	st	%r15,__LC_THREAD_INFO	# cache thread info in lowcore
-	mvc	__LC_CURRENT(4),__TI_task(%r15)
-	ahi	%r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
-	st	%r15,__LC_KERNEL_STACK	# set end of kernel stack
-	ahi	%r15,-96
-#
-# Save ipl parameters, clear bss memory, initialize storage key for kernel pages,
-# and create a kernel NSS if the SAVESYS= parm is defined
-#
-	l	%r14,.Lstartup_init-.LPG1(%r13)
-	basr	%r14,%r14
-	lpsw  .Lentry-.LPG1(13)		# jump to _stext in primary-space,
-					# virtual and never return ...
-	.align	8
-.Lentry:.long	0x00080000,0x80000000 + _stext
-.Lctl:	.long	0x04b50000		# cr0: various things
-	.long	0			# cr1: primary space segment table
-	.long	.Lduct			# cr2: dispatchable unit control table
-	.long	0			# cr3: instruction authorization
-	.long	0			# cr4: instruction authorization
-	.long	.Lduct			# cr5: primary-aste origin
-	.long	0			# cr6:	I/O interrupts
-	.long	0			# cr7:	secondary space segment table
-	.long	0			# cr8:	access registers translation
-	.long	0			# cr9:	tracing off
-	.long	0			# cr10: tracing off
-	.long	0			# cr11: tracing off
-	.long	0			# cr12: tracing off
-	.long	0			# cr13: home space segment table
-	.long	0xc0000000		# cr14: machine check handling off
-	.long	0			# cr15: linkage stack operations
-.Lbss_bgn:  .long __bss_start
-.Lbss_end:  .long _end
-.Lparmaddr: .long PARMAREA
-.Linittu:   .long init_thread_union
-.Lstartup_init:
-	    .long startup_init
-	.align	64
-.Lduct:	.long	0,0,0,0,.Lduald,0,0,0
-	.long	0,0,0,0,0,0,0,0
-	.align	128
-.Lduald:.rept	8
-	.long	0x80000000,0,0,0	# invalid access-list entries
-	.endr
-.Lbase_cc:
-	.long	sched_clock_base_cc
-
-ENTRY(_ehead)
-
-	.org	0x100000 - 0x11000	# head.o ends at 0x11000
-#
-# startup-code, running in absolute addressing mode
-#
-ENTRY(_stext)
-	basr	%r13,0			# get base
-.LPG3:
-# check control registers
-	stctl	%c0,%c15,0(%r15)
-	oi	2(%r15),0x60		# enable sigp emergency & external call
-	oi	0(%r15),0x10		# switch on low address protection
-	lctl	%c0,%c15,0(%r15)
-
-#
-	lam	0,15,.Laregs-.LPG3(%r13) # load access regs needed by uaccess
-	l	%r14,.Lstart-.LPG3(%r13)
-	basr	%r14,%r14		# call start_kernel
-#
-# We returned from start_kernel ?!? PANIK
-#
-	basr	%r13,0
-	lpsw	.Ldw-.(%r13)		# load disabled wait psw
-#
-	.align	8
-.Ldw:	.long	0x000a0000,0x00000000
-.Lstart:.long	start_kernel
-.Laregs:.long	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

arch/s390/kernel/head_kdump.S

@@ -92,17 +92,9 @@ startup_kdump_relocated:
 #else
 .align 2
 .Lep_startup_kdump:
-#ifdef CONFIG_64BIT
 	larl	%r13,startup_kdump_crash
 	lpswe	0(%r13)
 .align 8
 startup_kdump_crash:
 	.quad	0x0002000080000000,0x0000000000000000 + startup_kdump_crash
-#else
-	basr	%r13,0
-0:	lpsw	startup_kdump_crash-0b(%r13)
-.align 8
-startup_kdump_crash:
-	.long	0x000a0000,0x00000000 + startup_kdump_crash
-#endif /* CONFIG_64BIT */
 #endif /* CONFIG_CRASH_DUMP */

arch/s390/kernel/ipl.c

@@ -182,24 +182,21 @@ EXPORT_SYMBOL_GPL(diag308);
 
 /* SYSFS */
 
-#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value)		\
+#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...)		\
 static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj,	\
 		struct kobj_attribute *attr,				\
 		char *page)						\
 {									\
-	return sprintf(page, _format, _value);				\
-}									\
+	return snprintf(page, PAGE_SIZE, _format, ##args);		\
+}
+
+#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value)		\
+IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value)			\
 static struct kobj_attribute sys_##_prefix##_##_name##_attr =		\
-	__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL);
+	__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL)
 
 #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)	\
-static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj,	\
-		struct kobj_attribute *attr,				\
-		char *page)						\
-{									\
-	return sprintf(page, _fmt_out,					\
-			(unsigned long long) _value);			\
-}									\
+IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value)	\
 static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj,	\
 		struct kobj_attribute *attr,				\
 		const char *buf, size_t len)				\
@@ -213,15 +210,10 @@ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj,	\
 static struct kobj_attribute sys_##_prefix##_##_name##_attr =		\
 	__ATTR(_name,(S_IRUGO | S_IWUSR),				\
 			sys_##_prefix##_##_name##_show,			\
-			sys_##_prefix##_##_name##_store);
+			sys_##_prefix##_##_name##_store)
 
 #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
-static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj,	\
-		struct kobj_attribute *attr,				\
-		char *page)						\
-{									\
-	return sprintf(page, _fmt_out, _value);				\
-}									\
+IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value)			\
 static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj,	\
 		struct kobj_attribute *attr,				\
 		const char *buf, size_t len)				\
@@ -233,7 +225,7 @@ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj,	\
 static struct kobj_attribute sys_##_prefix##_##_name##_attr =		\
 	__ATTR(_name,(S_IRUGO | S_IWUSR),				\
 			sys_##_prefix##_##_name##_show,			\
-			sys_##_prefix##_##_name##_store);
+			sys_##_prefix##_##_name##_store)
 
 static void make_attrs_ro(struct attribute **attrs)
 {
@@ -415,15 +407,9 @@ static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
 	return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START,
 					IPL_PARMBLOCK_SIZE);
 }
-
-static struct bin_attribute ipl_parameter_attr = {
-	.attr = {
-		.name = "binary_parameter",
-		.mode = S_IRUGO,
-	},
-	.size = PAGE_SIZE,
-	.read = &ipl_parameter_read,
-};
+static struct bin_attribute ipl_parameter_attr =
+	__BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL,
+		   PAGE_SIZE);
 
 static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *attr, char *buf,
@@ -434,14 +420,13 @@ static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
 
 	return memory_read_from_buffer(buf, count, &off, scp_data, size);
 }
+static struct bin_attribute ipl_scp_data_attr =
+	__BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE);
 
-static struct bin_attribute ipl_scp_data_attr = {
-	.attr = {
-		.name = "scp_data",
-		.mode = S_IRUGO,
-	},
-	.size = PAGE_SIZE,
-	.read = ipl_scp_data_read,
+static struct bin_attribute *ipl_fcp_bin_attrs[] = {
+	&ipl_parameter_attr,
+	&ipl_scp_data_attr,
+	NULL,
 };
 
 /* FCP ipl device attributes */
@@ -484,6 +469,7 @@ static struct attribute *ipl_fcp_attrs[] = {
 
 static struct attribute_group ipl_fcp_attr_group = {
 	.attrs = ipl_fcp_attrs,
+	.bin_attrs = ipl_fcp_bin_attrs,
 };
 
 /* CCW ipl device attributes */
@@ -540,28 +526,6 @@ static struct attribute_group ipl_unknown_attr_group = {
 
 static struct kset *ipl_kset;
 
-static int __init ipl_register_fcp_files(void)
-{
-	int rc;
-
-	rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
-	if (rc)
-		goto out;
-	rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_parameter_attr);
-	if (rc)
-		goto out_ipl_parm;
-	rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_scp_data_attr);
-	if (!rc)
-		goto out;
-
-	sysfs_remove_bin_file(&ipl_kset->kobj, &ipl_parameter_attr);
-
-out_ipl_parm:
-	sysfs_remove_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
-out:
-	return rc;
-}
-
 static void __ipl_run(void *unused)
 {
 	diag308(DIAG308_IPL, NULL);
@@ -596,7 +560,7 @@ static int __init ipl_init(void)
 		break;
 	case IPL_TYPE_FCP:
 	case IPL_TYPE_FCP_DUMP:
-		rc = ipl_register_fcp_files();
+		rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
 		break;
 	case IPL_TYPE_NSS:
 		rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group);
@@ -744,15 +708,13 @@ static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
 
 	return count;
 }
+static struct bin_attribute sys_reipl_fcp_scp_data_attr =
+	__BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read,
+		   reipl_fcp_scpdata_write, PAGE_SIZE);
 
-static struct bin_attribute sys_reipl_fcp_scp_data_attr = {
-	.attr = {
-		.name = "scp_data",
-		.mode = S_IRUGO | S_IWUSR,
-	},
-	.size = PAGE_SIZE,
-	.read = reipl_fcp_scpdata_read,
-	.write = reipl_fcp_scpdata_write,
+static struct bin_attribute *reipl_fcp_bin_attrs[] = {
+	&sys_reipl_fcp_scp_data_attr,
+	NULL,
 };
 
 DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
@@ -841,6 +803,7 @@ static struct attribute *reipl_fcp_attrs[] = {
 
 static struct attribute_group reipl_fcp_attr_group = {
 	.attrs = reipl_fcp_attrs,
+	.bin_attrs = reipl_fcp_bin_attrs,
 };
 
 /* CCW reipl device attributes */
@@ -1261,15 +1224,6 @@ static int __init reipl_fcp_init(void)
 		return rc;
 	}
 
-	rc = sysfs_create_bin_file(&reipl_fcp_kset->kobj,
-				   &sys_reipl_fcp_scp_data_attr);
-	if (rc) {
-		sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
-		kset_unregister(reipl_fcp_kset);
-		free_page((unsigned long) reipl_block_fcp);
-		return rc;
-	}
-
 	if (ipl_info.type == IPL_TYPE_FCP) {
 		memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE);
 		/*
@@ -1713,9 +1667,7 @@ static ssize_t on_reboot_store(struct kobject *kobj,
 {
 	return set_trigger(buf, &on_reboot_trigger, len);
 }
-
-static struct kobj_attribute on_reboot_attr =
-	__ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store);
+static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot);
 
 static void do_machine_restart(char *__unused)
 {
@@ -1741,9 +1693,7 @@ static ssize_t on_panic_store(struct kobject *kobj,
 {
 	return set_trigger(buf, &on_panic_trigger, len);
 }
-
-static struct kobj_attribute on_panic_attr =
-	__ATTR(on_panic, 0644, on_panic_show, on_panic_store);
+static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic);
 
 static void do_panic(void)
 {
@@ -1769,9 +1719,7 @@ static ssize_t on_restart_store(struct kobject *kobj,
 {
 	return set_trigger(buf, &on_restart_trigger, len);
 }
-
-static struct kobj_attribute on_restart_attr =
-	__ATTR(on_restart, 0644, on_restart_show, on_restart_store);
+static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart);
 
 static void __do_restart(void *ignore)
 {
@@ -1808,10 +1756,7 @@ static ssize_t on_halt_store(struct kobject *kobj,
 {
 	return set_trigger(buf, &on_halt_trigger, len);
 }
-
-static struct kobj_attribute on_halt_attr =
-	__ATTR(on_halt, 0644, on_halt_show, on_halt_store);
-
+static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt);
 
 static void do_machine_halt(void)
 {
@@ -1837,10 +1782,7 @@ static ssize_t on_poff_store(struct kobject *kobj,
 {
 	return set_trigger(buf, &on_poff_trigger, len);
 }
-
-static struct kobj_attribute on_poff_attr =
-	__ATTR(on_poff, 0644, on_poff_show, on_poff_store);
-
+static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff);
 
 static void do_machine_power_off(void)
 {
@@ -1850,26 +1792,27 @@ static void do_machine_power_off(void)
 }
 void (*_machine_power_off)(void) = do_machine_power_off;
 
+static struct attribute *shutdown_action_attrs[] = {
+	&on_restart_attr.attr,
+	&on_reboot_attr.attr,
+	&on_panic_attr.attr,
+	&on_halt_attr.attr,
+	&on_poff_attr.attr,
+	NULL,
+};
+
+static struct attribute_group shutdown_action_attr_group = {
+	.attrs = shutdown_action_attrs,
+};
+
 static void __init shutdown_triggers_init(void)
 {
 	shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL,
 						    firmware_kobj);
 	if (!shutdown_actions_kset)
 		goto fail;
-	if (sysfs_create_file(&shutdown_actions_kset->kobj,
-			      &on_reboot_attr.attr))
-		goto fail;
-	if (sysfs_create_file(&shutdown_actions_kset->kobj,
-			      &on_panic_attr.attr))
-		goto fail;
-	if (sysfs_create_file(&shutdown_actions_kset->kobj,
-			      &on_halt_attr.attr))
-		goto fail;
-	if (sysfs_create_file(&shutdown_actions_kset->kobj,
-			      &on_poff_attr.attr))
-		goto fail;
-	if (sysfs_create_file(&shutdown_actions_kset->kobj,
-			      &on_restart_attr.attr))
+	if (sysfs_create_group(&shutdown_actions_kset->kobj,
+			       &shutdown_action_attr_group))
 		goto fail;
 	return;
 fail:
@@ -2062,12 +2005,10 @@ static void do_reset_calls(void)
 {
 	struct reset_call *reset;
 
-#ifdef CONFIG_64BIT
 	if (diag308_set_works) {
 		diag308_reset();
 		return;
 	}
-#endif
 	list_for_each_entry(reset, &rcall, list)
 		reset->fn();
 }

arch/s390/kernel/irq.c

@@ -56,7 +56,7 @@ static const struct irq_class irqclass_main_desc[NR_IRQS_BASE] = {
  * /proc/interrupts.
  * In addition this list contains non external / I/O events like NMIs.
  */
-static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = {
+static const struct irq_class irqclass_sub_desc[] = {
 	{.irq = IRQEXT_CLK, .name = "CLK", .desc = "[EXT] Clock Comparator"},
 	{.irq = IRQEXT_EXC, .name = "EXC", .desc = "[EXT] External Call"},
 	{.irq = IRQEXT_EMS, .name = "EMS", .desc = "[EXT] Emergency Signal"},
@@ -94,6 +94,7 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = {
 
 void __init init_IRQ(void)
 {
+	BUILD_BUG_ON(ARRAY_SIZE(irqclass_sub_desc) != NR_ARCH_IRQS);
 	init_cio_interrupts();
 	init_airq_interrupts();
 	init_ext_interrupts();

arch/s390/kernel/jump_label.c

@@ -78,7 +78,7 @@ static void __jump_label_transform(struct jump_entry *entry,
 		if (memcmp((void *)entry->code, &old, sizeof(old)))
 			jump_label_bug(entry, &old, &new);
 	}
-	probe_kernel_write((void *)entry->code, &new, sizeof(new));
+	s390_kernel_write((void *)entry->code, &new, sizeof(new));
 }
 
 static int __sm_arch_jump_label_transform(void *data)

arch/s390/kernel/kprobes.c

@@ -178,7 +178,7 @@ static int swap_instruction(void *data)
 	}
 skip_ftrace:
 	kcb->kprobe_status = KPROBE_SWAP_INST;
-	probe_kernel_write(p->addr, &new_insn, len);
+	s390_kernel_write(p->addr, &new_insn, len);
 	kcb->kprobe_status = status;
 	return 0;
 }

arch/s390/kernel/module.c

@@ -38,13 +38,8 @@
 #define DEBUGP(fmt , ...)
 #endif
 
-#ifndef CONFIG_64BIT
-#define PLT_ENTRY_SIZE 12
-#else /* CONFIG_64BIT */
 #define PLT_ENTRY_SIZE 20
-#endif /* CONFIG_64BIT */
 
-#ifdef CONFIG_64BIT
 void *module_alloc(unsigned long size)
 {
 	if (PAGE_ALIGN(size) > MODULES_LEN)
@@ -53,7 +48,6 @@ void *module_alloc(unsigned long size)
 				    GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE,
 				    __builtin_return_address(0));
 }
-#endif
 
 void module_arch_freeing_init(struct module *mod)
 {
@@ -323,17 +317,11 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 			unsigned int *ip;
 			ip = me->module_core + me->arch.plt_offset +
 				info->plt_offset;
-#ifndef CONFIG_64BIT
-			ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */
-			ip[1] = 0x100607f1;
-			ip[2] = val;
-#else /* CONFIG_64BIT */
 			ip[0] = 0x0d10e310; /* basr 1,0; lg 1,10(1); br 1 */
 			ip[1] = 0x100a0004;
 			ip[2] = 0x07f10000;
 			ip[3] = (unsigned int) (val >> 32);
 			ip[4] = (unsigned int) val;
-#endif /* CONFIG_64BIT */
 			info->plt_initialized = 1;
 		}
 		if (r_type == R_390_PLTOFF16 ||

arch/s390/kernel/nmi.c

@@ -117,55 +117,36 @@ static int notrace s390_revalidate_registers(struct mci *mci)
 		 */
 		kill_task = 1;
 	}
-#ifndef CONFIG_64BIT
+	fpt_save_area = &S390_lowcore.floating_pt_save_area;
+	fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area;
+	if (!mci->fc) {
+		/*
+		 * Floating point control register can't be restored.
+		 * Task will be terminated.
+		 */
+		asm volatile("lfpc 0(%0)" : : "a" (&zero), "m" (zero));
+		kill_task = 1;
+	} else
+		asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
+
 	asm volatile(
 		"	ld	0,0(%0)\n"
-		"	ld	2,8(%0)\n"
-		"	ld	4,16(%0)\n"
-		"	ld	6,24(%0)"
-		: : "a" (&S390_lowcore.floating_pt_save_area));
-#endif
-
-	if (MACHINE_HAS_IEEE) {
-#ifdef CONFIG_64BIT
-		fpt_save_area = &S390_lowcore.floating_pt_save_area;
-		fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area;
-#else
-		fpt_save_area = (void *) S390_lowcore.extended_save_area_addr;
-		fpt_creg_save_area = fpt_save_area + 128;
-#endif
-		if (!mci->fc) {
-			/*
-			 * Floating point control register can't be restored.
-			 * Task will be terminated.
-			 */
-			asm volatile("lfpc 0(%0)" : : "a" (&zero), "m" (zero));
-			kill_task = 1;
-
-		} else
-			asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
-
-		asm volatile(
-			"	ld	0,0(%0)\n"
-			"	ld	1,8(%0)\n"
-			"	ld	2,16(%0)\n"
-			"	ld	3,24(%0)\n"
-			"	ld	4,32(%0)\n"
-			"	ld	5,40(%0)\n"
-			"	ld	6,48(%0)\n"
-			"	ld	7,56(%0)\n"
-			"	ld	8,64(%0)\n"
-			"	ld	9,72(%0)\n"
-			"	ld	10,80(%0)\n"
-			"	ld	11,88(%0)\n"
-			"	ld	12,96(%0)\n"
-			"	ld	13,104(%0)\n"
-			"	ld	14,112(%0)\n"
-			"	ld	15,120(%0)\n"
-			: : "a" (fpt_save_area));
-	}
-
-#ifdef CONFIG_64BIT
+		"	ld	1,8(%0)\n"
+		"	ld	2,16(%0)\n"
+		"	ld	3,24(%0)\n"
+		"	ld	4,32(%0)\n"
+		"	ld	5,40(%0)\n"
+		"	ld	6,48(%0)\n"
+		"	ld	7,56(%0)\n"
+		"	ld	8,64(%0)\n"
+		"	ld	9,72(%0)\n"
+		"	ld	10,80(%0)\n"
+		"	ld	11,88(%0)\n"
+		"	ld	12,96(%0)\n"
+		"	ld	13,104(%0)\n"
+		"	ld	14,112(%0)\n"
+		"	ld	15,120(%0)\n"
+		: : "a" (fpt_save_area));
 	/* Revalidate vector registers */
 	if (MACHINE_HAS_VX && current->thread.vxrs) {
 		if (!mci->vr) {
@@ -178,7 +159,6 @@ static int notrace s390_revalidate_registers(struct mci *mci)
 		restore_vx_regs((__vector128 *)
 				S390_lowcore.vector_save_area_addr);
 	}
-#endif
 	/* Revalidate access registers */
 	asm volatile(
 		"	lam	0,15,0(%0)"
@@ -198,21 +178,14 @@ static int notrace s390_revalidate_registers(struct mci *mci)
 		 */
 		s390_handle_damage("invalid control registers.");
 	} else {
-#ifdef CONFIG_64BIT
 		asm volatile(
 			"	lctlg	0,15,0(%0)"
 			: : "a" (&S390_lowcore.cregs_save_area));
-#else
-		asm volatile(
-			"	lctl	0,15,0(%0)"
-			: : "a" (&S390_lowcore.cregs_save_area));
-#endif
 	}
 	/*
 	 * We don't even try to revalidate the TOD register, since we simply
 	 * can't write something sensible into that register.
 	 */
-#ifdef CONFIG_64BIT
 	/*
 	 * See if we can revalidate the TOD programmable register with its
 	 * old contents (should be zero) otherwise set it to zero.
@@ -228,7 +201,6 @@ static int notrace s390_revalidate_registers(struct mci *mci)
 			"	sckpf"
 			: : "a" (&S390_lowcore.tod_progreg_save_area)
 			: "0", "cc");
-#endif
 	/* Revalidate clock comparator register */
 	set_clock_comparator(S390_lowcore.clock_comparator);
 	/* Check if old PSW is valid */
@@ -280,19 +252,11 @@ void notrace s390_do_machine_check(struct pt_regs *regs)
 		if (mci->b) {
 			/* Processing backup -> verify if we can survive this */
 			u64 z_mcic, o_mcic, t_mcic;
-#ifdef CONFIG_64BIT
 			z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<29);
 			o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
 				  1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
 				  1ULL<<30 | 1ULL<<21 | 1ULL<<20 | 1ULL<<17 |
 				  1ULL<<16);
-#else
-			z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<57 | 1ULL<<50 |
-				  1ULL<<29);
-			o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
-				  1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
-				  1ULL<<30 | 1ULL<<20 | 1ULL<<17 | 1ULL<<16);
-#endif
 			t_mcic = *(u64 *)mci;
 
 			if (((t_mcic & z_mcic) != 0) ||

arch/s390/kernel/pgm_check.S

@@ -6,19 +6,13 @@
 
 #include <linux/linkage.h>
 
-#ifdef CONFIG_32BIT
-#define PGM_CHECK_64BIT(handler) .long default_trap_handler
-#else
-#define PGM_CHECK_64BIT(handler) .long handler
-#endif
-
 #define PGM_CHECK(handler)	.long handler
 #define PGM_CHECK_DEFAULT	PGM_CHECK(default_trap_handler)
 
 /*
  * The program check table contains exactly 128 (0x00-0x7f) entries. Each
- * line defines the 31 and/or 64 bit function to be called corresponding
- * to the program check interruption code.
+ * line defines the function to be called corresponding to the program check
+ * interruption code.
  */
 .section .rodata, "a"
 ENTRY(pgm_check_table)
@@ -46,10 +40,10 @@ PGM_CHECK_DEFAULT			/* 14 */
 PGM_CHECK(operand_exception)		/* 15 */
 PGM_CHECK_DEFAULT			/* 16 */
 PGM_CHECK_DEFAULT			/* 17 */
-PGM_CHECK_64BIT(transaction_exception)	/* 18 */
+PGM_CHECK(transaction_exception)	/* 18 */
 PGM_CHECK_DEFAULT			/* 19 */
 PGM_CHECK_DEFAULT			/* 1a */
-PGM_CHECK_64BIT(vector_exception)	/* 1b */
+PGM_CHECK(vector_exception)		/* 1b */
 PGM_CHECK(space_switch_exception)	/* 1c */
 PGM_CHECK(hfp_sqrt_exception)		/* 1d */
 PGM_CHECK_DEFAULT			/* 1e */
@@ -78,10 +72,10 @@ PGM_CHECK_DEFAULT			/* 34 */
 PGM_CHECK_DEFAULT			/* 35 */
 PGM_CHECK_DEFAULT			/* 36 */
 PGM_CHECK_DEFAULT			/* 37 */
-PGM_CHECK_64BIT(do_dat_exception)	/* 38 */
-PGM_CHECK_64BIT(do_dat_exception)	/* 39 */
-PGM_CHECK_64BIT(do_dat_exception)	/* 3a */
-PGM_CHECK_64BIT(do_dat_exception)	/* 3b */
+PGM_CHECK(do_dat_exception)		/* 38 */
+PGM_CHECK(do_dat_exception)		/* 39 */
+PGM_CHECK(do_dat_exception)		/* 3a */
+PGM_CHECK(do_dat_exception)		/* 3b */
 PGM_CHECK_DEFAULT			/* 3c */
 PGM_CHECK_DEFAULT			/* 3d */
 PGM_CHECK_DEFAULT			/* 3e */

arch/s390/kernel/process.c

@@ -79,13 +79,11 @@ void release_thread(struct task_struct *dead_task)
 {
 }
 
-#ifdef CONFIG_64BIT
 void arch_release_task_struct(struct task_struct *tsk)
 {
 	if (tsk->thread.vxrs)
 		kfree(tsk->thread.vxrs);
 }
-#endif
 
 int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
 		unsigned long arg, struct task_struct *p)
@@ -144,19 +142,6 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
 	p->thread.ri_signum = 0;
 	frame->childregs.psw.mask &= ~PSW_MASK_RI;
 
-#ifndef CONFIG_64BIT
-	/*
-	 * save fprs to current->thread.fp_regs to merge them with
-	 * the emulated registers and then copy the result to the child.
-	 */
-	save_fp_ctl(&current->thread.fp_regs.fpc);
-	save_fp_regs(current->thread.fp_regs.fprs);
-	memcpy(&p->thread.fp_regs, &current->thread.fp_regs,
-	       sizeof(s390_fp_regs));
-	/* Set a new TLS ?  */
-	if (clone_flags & CLONE_SETTLS)
-		p->thread.acrs[0] = frame->childregs.gprs[6];
-#else /* CONFIG_64BIT */
 	/* Save the fpu registers to new thread structure. */
 	save_fp_ctl(&p->thread.fp_regs.fpc);
 	save_fp_regs(p->thread.fp_regs.fprs);
@@ -172,15 +157,13 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
 			p->thread.acrs[1] = (unsigned int)tls;
 		}
 	}
-#endif /* CONFIG_64BIT */
 	return 0;
 }
 
 asmlinkage void execve_tail(void)
 {
 	current->thread.fp_regs.fpc = 0;
-	if (MACHINE_HAS_IEEE)
-		asm volatile("sfpc %0,%0" : : "d" (0));
+	asm volatile("sfpc %0,%0" : : "d" (0));
 }
 
 /*
@@ -188,18 +171,8 @@ asmlinkage void execve_tail(void)
  */
 int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
 {
-#ifndef CONFIG_64BIT
-	/*
-	 * save fprs to current->thread.fp_regs to merge them with
-	 * the emulated registers and then copy the result to the dump.
-	 */
-	save_fp_ctl(&current->thread.fp_regs.fpc);
-	save_fp_regs(current->thread.fp_regs.fprs);
-	memcpy(fpregs, &current->thread.fp_regs, sizeof(s390_fp_regs));
-#else /* CONFIG_64BIT */
 	save_fp_ctl(&fpregs->fpc);
 	save_fp_regs(fpregs->fprs);
-#endif /* CONFIG_64BIT */
 	return 1;
 }
 EXPORT_SYMBOL(dump_fpu);

arch/s390/kernel/ptrace.c

@@ -44,7 +44,6 @@ void update_cr_regs(struct task_struct *task)
 	struct thread_struct *thread = &task->thread;
 	struct per_regs old, new;
 
-#ifdef CONFIG_64BIT
 	/* Take care of the enable/disable of transactional execution. */
 	if (MACHINE_HAS_TE || MACHINE_HAS_VX) {
 		unsigned long cr, cr_new;
@@ -80,7 +79,6 @@ void update_cr_regs(struct task_struct *task)
 				__ctl_load(cr_new, 2, 2);
 		}
 	}
-#endif
 	/* Copy user specified PER registers */
 	new.control = thread->per_user.control;
 	new.start = thread->per_user.start;
@@ -93,10 +91,8 @@ void update_cr_regs(struct task_struct *task)
 			new.control |= PER_EVENT_BRANCH;
 		else
 			new.control |= PER_EVENT_IFETCH;
-#ifdef CONFIG_64BIT
 		new.control |= PER_CONTROL_SUSPENSION;
 		new.control |= PER_EVENT_TRANSACTION_END;
-#endif
 		if (test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP))
 			new.control |= PER_EVENT_IFETCH;
 		new.start = 0;
@@ -146,11 +142,7 @@ void ptrace_disable(struct task_struct *task)
 	task->thread.per_flags = 0;
 }
 
-#ifndef CONFIG_64BIT
-# define __ADDR_MASK 3
-#else
-# define __ADDR_MASK 7
-#endif
+#define __ADDR_MASK 7
 
 static inline unsigned long __peek_user_per(struct task_struct *child,
 					    addr_t addr)
@@ -223,7 +215,6 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
 		 * access registers are stored in the thread structure
 		 */
 		offset = addr - (addr_t) &dummy->regs.acrs;
-#ifdef CONFIG_64BIT
 		/*
 		 * Very special case: old & broken 64 bit gdb reading
 		 * from acrs[15]. Result is a 64 bit value. Read the
@@ -232,8 +223,7 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
 		if (addr == (addr_t) &dummy->regs.acrs[15])
 			tmp = ((unsigned long) child->thread.acrs[15]) << 32;
 		else
-#endif
-		tmp = *(addr_t *)((addr_t) &child->thread.acrs + offset);
+			tmp = *(addr_t *)((addr_t) &child->thread.acrs + offset);
 
 	} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
 		/*
@@ -261,12 +251,10 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
 		 * or the child->thread.vxrs array
 		 */
 		offset = addr - (addr_t) &dummy->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
 		if (child->thread.vxrs)
 			tmp = *(addr_t *)
 			       ((addr_t) child->thread.vxrs + 2*offset);
 		else
-#endif
 			tmp = *(addr_t *)
 			       ((addr_t) &child->thread.fp_regs.fprs + offset);
 
@@ -293,11 +281,9 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
 	 * an alignment of 4. Programmers from hell...
 	 */
 	mask = __ADDR_MASK;
-#ifdef CONFIG_64BIT
 	if (addr >= (addr_t) &((struct user *) NULL)->regs.acrs &&
 	    addr < (addr_t) &((struct user *) NULL)->regs.orig_gpr2)
 		mask = 3;
-#endif
 	if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
 		return -EIO;
 
@@ -370,7 +356,6 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
 		 * access registers are stored in the thread structure
 		 */
 		offset = addr - (addr_t) &dummy->regs.acrs;
-#ifdef CONFIG_64BIT
 		/*
 		 * Very special case: old & broken 64 bit gdb writing
 		 * to acrs[15] with a 64 bit value. Ignore the lower
@@ -380,8 +365,7 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
 		if (addr == (addr_t) &dummy->regs.acrs[15])
 			child->thread.acrs[15] = (unsigned int) (data >> 32);
 		else
-#endif
-		*(addr_t *)((addr_t) &child->thread.acrs + offset) = data;
+			*(addr_t *)((addr_t) &child->thread.acrs + offset) = data;
 
 	} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
 		/*
@@ -411,12 +395,10 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
 		 * or the child->thread.vxrs array
 		 */
 		offset = addr - (addr_t) &dummy->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
 		if (child->thread.vxrs)
 			*(addr_t *)((addr_t)
 				child->thread.vxrs + 2*offset) = data;
 		else
-#endif
 			*(addr_t *)((addr_t)
 				&child->thread.fp_regs.fprs + offset) = data;
 
@@ -441,11 +423,9 @@ static int poke_user(struct task_struct *child, addr_t addr, addr_t data)
 	 * an alignment of 4. Programmers from hell indeed...
 	 */
 	mask = __ADDR_MASK;
-#ifdef CONFIG_64BIT
 	if (addr >= (addr_t) &((struct user *) NULL)->regs.acrs &&
 	    addr < (addr_t) &((struct user *) NULL)->regs.orig_gpr2)
 		mask = 3;
-#endif
 	if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
 		return -EIO;
 
@@ -649,12 +629,10 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr)
 		 * or the child->thread.vxrs array
 		 */
 		offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
 		if (child->thread.vxrs)
 			tmp = *(__u32 *)
 			       ((addr_t) child->thread.vxrs + 2*offset);
 		else
-#endif
 			tmp = *(__u32 *)
 			       ((addr_t) &child->thread.fp_regs.fprs + offset);
 
@@ -776,12 +754,10 @@ static int __poke_user_compat(struct task_struct *child,
 		 * or the child->thread.vxrs array
 		 */
 		offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
 		if (child->thread.vxrs)
 			*(__u32 *)((addr_t)
 				child->thread.vxrs + 2*offset) = tmp;
 		else
-#endif
 			*(__u32 *)((addr_t)
 				&child->thread.fp_regs.fprs + offset) = tmp;
 
@@ -979,16 +955,13 @@ static int s390_fpregs_get(struct task_struct *target,
 	if (target == current) {
 		save_fp_ctl(&target->thread.fp_regs.fpc);
 		save_fp_regs(target->thread.fp_regs.fprs);
-	}
-#ifdef CONFIG_64BIT
-	else if (target->thread.vxrs) {
+	} else if (target->thread.vxrs) {
 		int i;
 
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
 			target->thread.fp_regs.fprs[i] =
 				*(freg_t *)(target->thread.vxrs + i);
 	}
-#endif
 	return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
 				   &target->thread.fp_regs, 0, -1);
 }
@@ -1026,23 +999,18 @@ static int s390_fpregs_set(struct task_struct *target,
 		if (target == current) {
 			restore_fp_ctl(&target->thread.fp_regs.fpc);
 			restore_fp_regs(target->thread.fp_regs.fprs);
-		}
-#ifdef CONFIG_64BIT
-		else if (target->thread.vxrs) {
+		} else if (target->thread.vxrs) {
 			int i;
 
 			for (i = 0; i < __NUM_VXRS_LOW; i++)
 				*(freg_t *)(target->thread.vxrs + i) =
 					target->thread.fp_regs.fprs[i];
 		}
-#endif
 	}
 
 	return rc;
 }
 
-#ifdef CONFIG_64BIT
-
 static int s390_last_break_get(struct task_struct *target,
 			       const struct user_regset *regset,
 			       unsigned int pos, unsigned int count,
@@ -1182,8 +1150,6 @@ static int s390_vxrs_high_set(struct task_struct *target,
 	return rc;
 }
 
-#endif
-
 static int s390_system_call_get(struct task_struct *target,
 				const struct user_regset *regset,
 				unsigned int pos, unsigned int count,
@@ -1229,7 +1195,6 @@ static const struct user_regset s390_regsets[] = {
 		.get = s390_system_call_get,
 		.set = s390_system_call_set,
 	},
-#ifdef CONFIG_64BIT
 	{
 		.core_note_type = NT_S390_LAST_BREAK,
 		.n = 1,
@@ -1262,7 +1227,6 @@ static const struct user_regset s390_regsets[] = {
 		.get = s390_vxrs_high_get,
 		.set = s390_vxrs_high_set,
 	},
-#endif
 };
 
 static const struct user_regset_view user_s390_view = {

arch/s390/kernel/reipl.S

@@ -1,7 +1,7 @@
 /*
- *  S390 version
- *    Copyright IBM Corp. 2000
- *    Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com)
+ *    Copyright IBM Corp 2000, 2011
+ *    Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
+ *		 Denis Joseph Barrow,
  */
 
 #include <linux/linkage.h>
@@ -9,43 +9,90 @@
 #include <asm/sigp.h>
 
 #
-# store_status: Empty implementation until kdump is supported on 31 bit
+# store_status
+#
+# Prerequisites to run this function:
+# - Prefix register is set to zero
+# - Original prefix register is stored in "dump_prefix_page"
+# - Lowcore protection is off
 #
 ENTRY(store_status)
-		br	%r14
+	/* Save register one and load save area base */
+	stg	%r1,__LC_SAVE_AREA_RESTART
+	lghi	%r1,SAVE_AREA_BASE
+	/* General purpose registers */
+	stmg	%r0,%r15,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	lg	%r2,__LC_SAVE_AREA_RESTART
+	stg	%r2,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE+8(%r1)
+	/* Control registers */
+	stctg	%c0,%c15,__LC_CREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	/* Access registers */
+	stam	%a0,%a15,__LC_AREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	/* Floating point registers */
+	std	%f0, 0x00 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f1, 0x08 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f2, 0x10 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f3, 0x18 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f4, 0x20 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f5, 0x28 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f6, 0x30 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f7, 0x38 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f8, 0x40 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f9, 0x48 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f10,0x50 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f11,0x58 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f12,0x60 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f13,0x68 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f14,0x70 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	std	%f15,0x78 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	/* Floating point control register */
+	stfpc	__LC_FP_CREG_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	/* CPU timer */
+	stpt	__LC_CPU_TIMER_SAVE_AREA-SAVE_AREA_BASE(%r1)
+	/* Saved prefix register */
+	larl	%r2,dump_prefix_page
+	mvc	__LC_PREFIX_SAVE_AREA-SAVE_AREA_BASE(4,%r1),0(%r2)
+	/* Clock comparator - seven bytes */
+	larl	%r2,.Lclkcmp
+	stckc	0(%r2)
+	mvc	__LC_CLOCK_COMP_SAVE_AREA-SAVE_AREA_BASE + 1(7,%r1),1(%r2)
+	/* Program status word */
+	epsw	%r2,%r3
+	st	%r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 0(%r1)
+	st	%r3,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 4(%r1)
+	larl	%r2,store_status
+	stg	%r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 8(%r1)
+	br	%r14
+
+	.section .bss
+	.align	8
+.Lclkcmp:	.quad	0x0000000000000000
+	.previous
 
 #
 # do_reipl_asm
 # Parameter: r2 = schid of reipl device
 #
+
 ENTRY(do_reipl_asm)
 		basr	%r13,0
-.Lpg0:		lpsw	.Lnewpsw-.Lpg0(%r13)
-.Lpg1:		# do store status of all registers
+.Lpg0:		lpswe	.Lnewpsw-.Lpg0(%r13)
+.Lpg1:		brasl	%r14,store_status
 
-		stm	%r0,%r15,__LC_GPREGS_SAVE_AREA
-		stctl	%c0,%c15,__LC_CREGS_SAVE_AREA
-		stam	%a0,%a15,__LC_AREGS_SAVE_AREA
-		l	%r10,.Ldump_pfx-.Lpg0(%r13)
-		mvc	__LC_PREFIX_SAVE_AREA(4),0(%r10)
-		stckc	.Lclkcmp-.Lpg0(%r13)
-		mvc	__LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
-		stpt	__LC_CPU_TIMER_SAVE_AREA
-		st	%r13, __LC_PSW_SAVE_AREA+4
-		lctl	%c6,%c6,.Lall-.Lpg0(%r13)
-		lr	%r1,%r2
-		mvc	__LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
+		lctlg	%c6,%c6,.Lall-.Lpg0(%r13)
+		lgr	%r1,%r2
+		mvc	__LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
 		stsch	.Lschib-.Lpg0(%r13)
 		oi	.Lschib+5-.Lpg0(%r13),0x84
-.Lecs:  	xi	.Lschib+27-.Lpg0(%r13),0x01
+.Lecs:		xi	.Lschib+27-.Lpg0(%r13),0x01
 		msch	.Lschib-.Lpg0(%r13)
-		lhi	%r0,5
+		lghi	%r0,5
 .Lssch:		ssch	.Liplorb-.Lpg0(%r13)
 		jz	.L001
 		brct	%r0,.Lssch
 		bas	%r14,.Ldisab-.Lpg0(%r13)
-.L001:		mvc	__LC_IO_NEW_PSW(8),.Lionew-.Lpg0(%r13)
-.Ltpi:		lpsw	.Lwaitpsw-.Lpg0(%r13)
+.L001:		mvc	__LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13)
+.Ltpi:		lpswe	.Lwaitpsw-.Lpg0(%r13)
 .Lcont:		c	%r1,__LC_SUBCHANNEL_ID
 		jnz	.Ltpi
 		clc	__LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
@@ -58,20 +105,36 @@ ENTRY(do_reipl_asm)
 		jz	.L003
 		bas	%r14,.Ldisab-.Lpg0(%r13)
 .L003:		st	%r1,__LC_SUBCHANNEL_ID
+		lhi	%r1,0		 # mode 0 = esa
+		slr	%r0,%r0		 # set cpuid to zero
+		sigp	%r1,%r0,SIGP_SET_ARCHITECTURE # switch to esa mode
 		lpsw	0
-		sigp	0,0,SIGP_RESTART
-.Ldisab:	st	%r14,.Ldispsw+4-.Lpg0(%r13)
-		lpsw	.Ldispsw-.Lpg0(%r13)
+.Ldisab:	sll	%r14,1
+		srl	%r14,1		 # need to kill hi bit to avoid specification exceptions.
+		st	%r14,.Ldispsw+12-.Lpg0(%r13)
+		lpswe	.Ldispsw-.Lpg0(%r13)
 		.align	8
-.Lclkcmp:	.quad	0x0000000000000000
-.Lall:		.long	0xff000000
-.Ldump_pfx:	.long	dump_prefix_page
-		.align	8
-.Lnewpsw:	.long	0x00080000,0x80000000+.Lpg1
-.Lpcnew:	.long	0x00080000,0x80000000+.Lecs
-.Lionew:	.long	0x00080000,0x80000000+.Lcont
-.Lwaitpsw:	.long	0x020a0000,0x00000000+.Ltpi
-.Ldispsw:	.long	0x000a0000,0x00000000
+.Lall:		.quad	0x00000000ff000000
+		.align	16
+/*
+ * These addresses have to be 31 bit otherwise
+ * the sigp will throw a specifcation exception
+ * when switching to ESA mode as bit 31 be set
+ * in the ESA psw.
+ * Bit 31 of the addresses has to be 0 for the
+ * 31bit lpswe instruction a fact they appear to have
+ * omitted from the pop.
+ */
+.Lnewpsw:	.quad	0x0000000080000000
+		.quad	.Lpg1
+.Lpcnew:	.quad	0x0000000080000000
+		.quad	.Lecs
+.Lionew:	.quad	0x0000000080000000
+		.quad	.Lcont
+.Lwaitpsw:	.quad	0x0202000080000000
+		.quad	.Ltpi
+.Ldispsw:	.quad	0x0002000080000000
+		.quad	0x0000000000000000
 .Liplccws:	.long	0x02000000,0x60000018
 		.long	0x08000008,0x20000001
 .Liplorb:	.long	0x0049504c,0x0040ff80

arch/s390/kernel/reipl64.S

@@ -1,155 +0,0 @@
-/*
- *    Copyright IBM Corp 2000, 2011
- *    Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
- *		 Denis Joseph Barrow,
- */
-
-#include <linux/linkage.h>
-#include <asm/asm-offsets.h>
-#include <asm/sigp.h>
-
-#
-# store_status
-#
-# Prerequisites to run this function:
-# - Prefix register is set to zero
-# - Original prefix register is stored in "dump_prefix_page"
-# - Lowcore protection is off
-#
-ENTRY(store_status)
-	/* Save register one and load save area base */
-	stg	%r1,__LC_SAVE_AREA_RESTART
-	lghi	%r1,SAVE_AREA_BASE
-	/* General purpose registers */
-	stmg	%r0,%r15,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	lg	%r2,__LC_SAVE_AREA_RESTART
-	stg	%r2,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE+8(%r1)
-	/* Control registers */
-	stctg	%c0,%c15,__LC_CREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	/* Access registers */
-	stam	%a0,%a15,__LC_AREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	/* Floating point registers */
-	std	%f0, 0x00 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f1, 0x08 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f2, 0x10 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f3, 0x18 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f4, 0x20 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f5, 0x28 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f6, 0x30 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f7, 0x38 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f8, 0x40 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f9, 0x48 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f10,0x50 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f11,0x58 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f12,0x60 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f13,0x68 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f14,0x70 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	std	%f15,0x78 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	/* Floating point control register */
-	stfpc	__LC_FP_CREG_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	/* CPU timer */
-	stpt	__LC_CPU_TIMER_SAVE_AREA-SAVE_AREA_BASE(%r1)
-	/* Saved prefix register */
-	larl	%r2,dump_prefix_page
-	mvc	__LC_PREFIX_SAVE_AREA-SAVE_AREA_BASE(4,%r1),0(%r2)
-	/* Clock comparator - seven bytes */
-	larl	%r2,.Lclkcmp
-	stckc	0(%r2)
-	mvc	__LC_CLOCK_COMP_SAVE_AREA-SAVE_AREA_BASE + 1(7,%r1),1(%r2)
-	/* Program status word */
-	epsw	%r2,%r3
-	st	%r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 0(%r1)
-	st	%r3,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 4(%r1)
-	larl	%r2,store_status
-	stg	%r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 8(%r1)
-	br	%r14
-
-	.section .bss
-	.align	8
-.Lclkcmp:	.quad	0x0000000000000000
-	.previous
-
-#
-# do_reipl_asm
-# Parameter: r2 = schid of reipl device
-#
-
-ENTRY(do_reipl_asm)
-		basr	%r13,0
-.Lpg0:		lpswe	.Lnewpsw-.Lpg0(%r13)
-.Lpg1:		brasl	%r14,store_status
-
-		lctlg	%c6,%c6,.Lall-.Lpg0(%r13)
-		lgr	%r1,%r2
-		mvc	__LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
-		stsch	.Lschib-.Lpg0(%r13)
-		oi	.Lschib+5-.Lpg0(%r13),0x84
-.Lecs:  	xi	.Lschib+27-.Lpg0(%r13),0x01
-		msch	.Lschib-.Lpg0(%r13)
-		lghi	%r0,5
-.Lssch:		ssch	.Liplorb-.Lpg0(%r13)
-		jz	.L001
-		brct	%r0,.Lssch
-		bas	%r14,.Ldisab-.Lpg0(%r13)
-.L001:		mvc	__LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13)
-.Ltpi:		lpswe	.Lwaitpsw-.Lpg0(%r13)
-.Lcont:		c	%r1,__LC_SUBCHANNEL_ID
-		jnz	.Ltpi
-		clc	__LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
-		jnz	.Ltpi
-		tsch	.Liplirb-.Lpg0(%r13)
-		tm	.Liplirb+9-.Lpg0(%r13),0xbf
-		jz	.L002
-		bas	%r14,.Ldisab-.Lpg0(%r13)
-.L002:		tm	.Liplirb+8-.Lpg0(%r13),0xf3
-		jz	.L003
-		bas	%r14,.Ldisab-.Lpg0(%r13)
-.L003:		st	%r1,__LC_SUBCHANNEL_ID
-		lhi	%r1,0		 # mode 0 = esa
-		slr	%r0,%r0 	 # set cpuid to zero
-		sigp	%r1,%r0,SIGP_SET_ARCHITECTURE # switch to esa mode
-		lpsw	0
-.Ldisab:	sll	%r14,1
-		srl	%r14,1		 # need to kill hi bit to avoid specification exceptions.
-		st	%r14,.Ldispsw+12-.Lpg0(%r13)
-		lpswe	.Ldispsw-.Lpg0(%r13)
-		.align	8
-.Lall:		.quad	0x00000000ff000000
-		.align	16
-/*
- * These addresses have to be 31 bit otherwise
- * the sigp will throw a specifcation exception
- * when switching to ESA mode as bit 31 be set
- * in the ESA psw.
- * Bit 31 of the addresses has to be 0 for the
- * 31bit lpswe instruction a fact they appear to have
- * omitted from the pop.
- */
-.Lnewpsw:	.quad	0x0000000080000000
-		.quad	.Lpg1
-.Lpcnew:	.quad	0x0000000080000000
-		.quad	.Lecs
-.Lionew:	.quad	0x0000000080000000
-		.quad	.Lcont
-.Lwaitpsw:	.quad	0x0202000080000000
-		.quad	.Ltpi
-.Ldispsw:	.quad	0x0002000080000000
-		.quad	0x0000000000000000
-.Liplccws:	.long	0x02000000,0x60000018
-		.long	0x08000008,0x20000001
-.Liplorb:	.long	0x0049504c,0x0040ff80
-		.long	0x00000000+.Liplccws
-.Lschib:	.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-.Liplirb:	.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000
-		.long	0x00000000,0x00000000

arch/s390/kernel/relocate_kernel.S

@@ -19,7 +19,8 @@
  * %r7 = PAGE_SIZE
  * %r8 holds the source address
  * %r9 = PAGE_SIZE
- * %r10 is a page mask
+ *
+ * 0xf000 is a page_mask
  */
 
 	.text
@@ -27,46 +28,47 @@ ENTRY(relocate_kernel)
 		basr	%r13,0		# base address
 	.base:
 		stnsm	sys_msk-.base(%r13),0xfb	# disable DAT
-		stctl	%c0,%c15,ctlregs-.base(%r13)
-		stm	%r0,%r15,gprregs-.base(%r13)
+		stctg	%c0,%c15,ctlregs-.base(%r13)
+		stmg	%r0,%r15,gprregs-.base(%r13)
+		lghi	%r0,3
+		sllg	%r0,%r0,31
+		stg	%r0,0x1d0(%r0)
+		la	%r0,.back_pgm-.base(%r13)
+		stg	%r0,0x1d8(%r0)
 		la	%r1,load_psw-.base(%r13)
 		mvc	0(8,%r0),0(%r1)
 		la	%r0,.back-.base(%r13)
 		st	%r0,4(%r0)
 		oi	4(%r0),0x80
-		mvc	0x68(8,%r0),0(%r1)
-		la	%r0,.back_pgm-.base(%r13)
-		st	%r0,0x6c(%r0)
-		oi	0x6c(%r0),0x80
-		lhi	%r0,0
+		lghi	%r0,0
 		diag	%r0,%r0,0x308
 	.back:
+		lhi	%r1,1		# mode 1 = esame
+		sigp	%r1,%r0,SIGP_SET_ARCHITECTURE # switch to esame mode
+		sam64			# switch to 64 bit addressing mode
 		basr	%r13,0
 	.back_base:
 		oi	have_diag308-.back_base(%r13),0x01
-		lctl	%c0,%c15,ctlregs-.back_base(%r13)
-		lm	%r0,%r15,gprregs-.back_base(%r13)
-		j	.start_reloc
+		lctlg	%c0,%c15,ctlregs-.back_base(%r13)
+		lmg	%r0,%r15,gprregs-.back_base(%r13)
+		j	.top
 	.back_pgm:
-		lm	%r0,%r15,gprregs-.base(%r13)
-	.start_reloc:
-		lhi	%r10,-1		# preparing the mask
-		sll	%r10,12		# shift it such that it becomes 0xf000
+		lmg	%r0,%r15,gprregs-.base(%r13)
 	.top:
-		lhi	%r7,4096	# load PAGE_SIZE in r7
-		lhi	%r9,4096	# load PAGE_SIZE in r9
-		l	%r5,0(%r2)	# read another word for indirection page
-		ahi	%r2,4		# increment pointer
+		lghi	%r7,4096	# load PAGE_SIZE in r7
+		lghi	%r9,4096	# load PAGE_SIZE in r9
+		lg	%r5,0(%r2)	# read another word for indirection page
+		aghi	%r2,8		# increment pointer
 		tml	%r5,0x1		# is it a destination page?
 		je	.indir_check	# NO, goto "indir_check"
-		lr	%r6,%r5		# r6 = r5
-		nr	%r6,%r10	# mask it out and...
+		lgr	%r6,%r5		# r6 = r5
+		nill	%r6,0xf000	# mask it out and...
 		j	.top		# ...next iteration
 	.indir_check:
 		tml	%r5,0x2		# is it a indirection page?
 		je	.done_test	# NO, goto "done_test"
-		nr	%r5,%r10	# YES, mask out,
-		lr	%r2,%r5		# move it into the right register,
+		nill	%r5,0xf000	# YES, mask out,
+		lgr	%r2,%r5		# move it into the right register,
 		j	.top		# and read next...
 	.done_test:
 		tml	%r5,0x4		# is it the done indicator?
@@ -75,13 +77,13 @@ ENTRY(relocate_kernel)
 	.source_test:
 		tml	%r5,0x8		# it should be a source indicator...
 		je	.top		# NO, ignore it...
-		lr	%r8,%r5		# r8 = r5
-		nr	%r8,%r10	# masking
+		lgr	%r8,%r5		# r8 = r5
+		nill	%r8,0xf000	# masking
 	0:	mvcle	%r6,%r8,0x0	# copy PAGE_SIZE bytes from r8 to r6 - pad with 0
 		jo	0b
 		j	.top
 	.done:
-		sr	%r0,%r0		# clear register r0
+		sgr	%r0,%r0		# clear register r0
 		la	%r4,load_psw-.base(%r13)	# load psw-address into the register
 		o	%r3,4(%r4)	# or load address into psw
 		st	%r3,4(%r4)
@@ -90,8 +92,9 @@ ENTRY(relocate_kernel)
 		jno	.no_diag308
 		diag	%r0,%r0,0x308
 	.no_diag308:
-		sr	%r1,%r1		# clear %r1
-		sr	%r2,%r2		# clear %r2
+		sam31			# 31 bit mode
+		sr	%r1,%r1		# erase register r1
+		sr	%r2,%r2		# erase register r2
 		sigp	%r1,%r2,SIGP_SET_ARCHITECTURE # set cpuid to zero
 		lpsw	0		# hopefully start new kernel...
 
@@ -102,11 +105,11 @@ ENTRY(relocate_kernel)
 		.quad	0
 	ctlregs:
 		.rept	16
-		.long	0
+		.quad	0
 		.endr
 	gprregs:
 		.rept	16
-		.long	0
+		.quad	0
 		.endr
 	have_diag308:
 		.byte	0

arch/s390/kernel/relocate_kernel64.S

@@ -1,121 +0,0 @@
-/*
- * Copyright IBM Corp. 2005
- *
- * Author(s): Rolf Adelsberger,
- *	      Heiko Carstens <heiko.carstens@de.ibm.com>
- *
- */
-
-#include <linux/linkage.h>
-#include <asm/sigp.h>
-
-/*
- * moves the new kernel to its destination...
- * %r2 = pointer to first kimage_entry_t
- * %r3 = start address - where to jump to after the job is done...
- *
- * %r5 will be used as temp. storage
- * %r6 holds the destination address
- * %r7 = PAGE_SIZE
- * %r8 holds the source address
- * %r9 = PAGE_SIZE
- *
- * 0xf000 is a page_mask
- */
-
-	.text
-ENTRY(relocate_kernel)
-		basr	%r13,0		# base address
-	.base:
-		stnsm	sys_msk-.base(%r13),0xfb	# disable DAT
-		stctg	%c0,%c15,ctlregs-.base(%r13)
-		stmg	%r0,%r15,gprregs-.base(%r13)
-		lghi	%r0,3
-		sllg	%r0,%r0,31
-		stg	%r0,0x1d0(%r0)
-		la	%r0,.back_pgm-.base(%r13)
-		stg	%r0,0x1d8(%r0)
-		la	%r1,load_psw-.base(%r13)
-		mvc	0(8,%r0),0(%r1)
-		la	%r0,.back-.base(%r13)
-		st	%r0,4(%r0)
-		oi	4(%r0),0x80
-		lghi	%r0,0
-		diag	%r0,%r0,0x308
-	.back:
-		lhi	%r1,1		# mode 1 = esame
-		sigp	%r1,%r0,SIGP_SET_ARCHITECTURE # switch to esame mode
-		sam64			# switch to 64 bit addressing mode
-		basr	%r13,0
-	.back_base:
-		oi	have_diag308-.back_base(%r13),0x01
-		lctlg	%c0,%c15,ctlregs-.back_base(%r13)
-		lmg	%r0,%r15,gprregs-.back_base(%r13)
-		j	.top
-	.back_pgm:
-		lmg	%r0,%r15,gprregs-.base(%r13)
-	.top:
-		lghi	%r7,4096	# load PAGE_SIZE in r7
-		lghi	%r9,4096	# load PAGE_SIZE in r9
-		lg	%r5,0(%r2)	# read another word for indirection page
-		aghi	%r2,8		# increment pointer
-		tml	%r5,0x1		# is it a destination page?
-		je	.indir_check	# NO, goto "indir_check"
-		lgr	%r6,%r5		# r6 = r5
-		nill	%r6,0xf000	# mask it out and...
-		j	.top		# ...next iteration
-	.indir_check:
-		tml	%r5,0x2		# is it a indirection page?
-		je	.done_test	# NO, goto "done_test"
-		nill	%r5,0xf000	# YES, mask out,
-		lgr	%r2,%r5		# move it into the right register,
-		j	.top		# and read next...
-	.done_test:
-		tml	%r5,0x4		# is it the done indicator?
-		je	.source_test	# NO! Well, then it should be the source indicator...
-		j	.done		# ok, lets finish it here...
-	.source_test:
-		tml	%r5,0x8		# it should be a source indicator...
-		je	.top		# NO, ignore it...
-		lgr	%r8,%r5		# r8 = r5
-		nill	%r8,0xf000	# masking
-	0:	mvcle	%r6,%r8,0x0	# copy PAGE_SIZE bytes from r8 to r6 - pad with 0
-		jo	0b
-		j	.top
-	.done:
-		sgr	%r0,%r0		# clear register r0
-		la	%r4,load_psw-.base(%r13)	# load psw-address into the register
-		o	%r3,4(%r4)	# or load address into psw
-		st	%r3,4(%r4)
-		mvc	0(8,%r0),0(%r4)	# copy psw to absolute address 0
-		tm	have_diag308-.base(%r13),0x01
-		jno	.no_diag308
-		diag	%r0,%r0,0x308
-	.no_diag308:
-		sam31			# 31 bit mode
-		sr	%r1,%r1		# erase register r1
-		sr	%r2,%r2		# erase register r2
-		sigp	%r1,%r2,SIGP_SET_ARCHITECTURE # set cpuid to zero
-		lpsw	0		# hopefully start new kernel...
-
-		.align	8
-	load_psw:
-		.long	0x00080000,0x80000000
-	sys_msk:
-		.quad	0
-	ctlregs:
-		.rept	16
-		.quad	0
-		.endr
-	gprregs:
-		.rept	16
-		.quad	0
-		.endr
-	have_diag308:
-		.byte	0
-		.align	8
-	relocate_kernel_end:
-	.align 8
-	.globl	relocate_kernel_len
-	relocate_kernel_len:
-		.quad	relocate_kernel_end - relocate_kernel

arch/s390/kernel/sclp.S

@@ -36,21 +36,17 @@ _sclp_wait_int:
 	ahi	%r15,-96			# create stack frame
 	la	%r8,LC_EXT_NEW_PSW		# register int handler
 	la	%r9,.LextpswS1-.LbaseS1(%r13)
-#ifdef CONFIG_64BIT
 	tm	LC_AR_MODE_ID,1
 	jno	.Lesa1
 	la	%r8,LC_EXT_NEW_PSW_64		# register int handler 64 bit
 	la	%r9,.LextpswS1_64-.LbaseS1(%r13)
 .Lesa1:
-#endif
 	mvc	.LoldpswS1-.LbaseS1(16,%r13),0(%r8)
 	mvc	0(16,%r8),0(%r9)
-#ifdef CONFIG_64BIT
 	epsw	%r6,%r7				# set current addressing mode
 	nill	%r6,0x1				# in new psw (31 or 64 bit mode)
 	nilh	%r7,0x8000
 	stm	%r6,%r7,0(%r8)
-#endif
 	lhi	%r6,0x0200			# cr mask for ext int (cr0.54)
 	ltr	%r2,%r2
 	jz	.LsetctS1
@@ -92,10 +88,8 @@ _sclp_wait_int:
 	.long	0, 0, 0, 0			# old ext int PSW
 .LextpswS1:
 	.long	0x00080000, 0x80000000+.LwaitS1	# PSW to handle ext int
-#ifdef CONFIG_64BIT
 .LextpswS1_64:
 	.quad	0, .LwaitS1			# PSW to handle ext int, 64 bit
-#endif
 .LwaitpswS1:
 	.long	0x010a0000, 0x00000000+.LloopS1	# PSW to wait for ext int
 .LtimeS1:
@@ -272,13 +266,11 @@ _sclp_print:
 ENTRY(_sclp_print_early)
 	stm	%r6,%r15,24(%r15)		# save registers
 	ahi	%r15,-96			# create stack frame
-#ifdef CONFIG_64BIT
 	tm	LC_AR_MODE_ID,1
 	jno	.Lesa2
 	ahi	%r15,-80
 	stmh	%r6,%r15,96(%r15)		# store upper register halves
 .Lesa2:
-#endif
 	lr	%r10,%r2			# save string pointer
 	lhi	%r2,0
 	bras	%r14,_sclp_setup		# enable console
@@ -291,14 +283,12 @@ ENTRY(_sclp_print_early)
 	lhi	%r2,1
 	bras	%r14,_sclp_setup		# disable console
 .LendS5:
-#ifdef CONFIG_64BIT
 	tm	LC_AR_MODE_ID,1
 	jno	.Lesa3
 	lgfr	%r2,%r2				# sign extend return value
 	lmh	%r6,%r15,96(%r15)		# restore upper register halves
 	ahi	%r15,80
 .Lesa3:
-#endif
 	lm	%r6,%r15,120(%r15)		# restore registers
 	br	%r14
 

arch/s390/kernel/setup.c

@@ -92,10 +92,8 @@ EXPORT_SYMBOL(VMALLOC_END);
 struct page *vmemmap;
 EXPORT_SYMBOL(vmemmap);
 
-#ifdef CONFIG_64BIT
 unsigned long MODULES_VADDR;
 unsigned long MODULES_END;
-#endif
 
 /* An array with a pointer to the lowcore of every CPU. */
 struct _lowcore *lowcore_ptr[NR_CPUS];
@@ -334,19 +332,10 @@ static void __init setup_lowcore(void)
 	lc->stfl_fac_list = S390_lowcore.stfl_fac_list;
 	memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list,
 	       MAX_FACILITY_BIT/8);
-#ifndef CONFIG_64BIT
-	if (MACHINE_HAS_IEEE) {
-		lc->extended_save_area_addr = (__u32)
-			__alloc_bootmem_low(PAGE_SIZE, PAGE_SIZE, 0);
-		/* enable extended save area */
-		__ctl_set_bit(14, 29);
-	}
-#else
 	if (MACHINE_HAS_VX)
 		lc->vector_save_area_addr =
 			(unsigned long) &lc->vector_save_area;
 	lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
-#endif
 	lc->sync_enter_timer = S390_lowcore.sync_enter_timer;
 	lc->async_enter_timer = S390_lowcore.async_enter_timer;
 	lc->exit_timer = S390_lowcore.exit_timer;
@@ -450,7 +439,6 @@ static void __init setup_memory_end(void)
 	unsigned long vmax, vmalloc_size, tmp;
 
 	/* Choose kernel address space layout: 2, 3, or 4 levels. */
-#ifdef CONFIG_64BIT
 	vmalloc_size = VMALLOC_END ?: (128UL << 30) - MODULES_LEN;
 	tmp = (memory_end ?: max_physmem_end) / PAGE_SIZE;
 	tmp = tmp * (sizeof(struct page) + PAGE_SIZE);
@@ -462,12 +450,6 @@ static void __init setup_memory_end(void)
 	MODULES_END = vmax;
 	MODULES_VADDR = MODULES_END - MODULES_LEN;
 	VMALLOC_END = MODULES_VADDR;
-#else
-	vmalloc_size = VMALLOC_END ?: 96UL << 20;
-	vmax = 1UL << 31;		/* 2-level kernel page table */
-	/* vmalloc area is at the end of the kernel address space. */
-	VMALLOC_END = vmax;
-#endif
 	VMALLOC_START = vmax - vmalloc_size;
 
 	/* Split remaining virtual space between 1:1 mapping & vmemmap array */
@@ -754,7 +736,6 @@ static void __init setup_hwcaps(void)
 	if (MACHINE_HAS_HPAGE)
 		elf_hwcap |= HWCAP_S390_HPAGE;
 
-#if defined(CONFIG_64BIT)
 	/*
 	 * 64-bit register support for 31-bit processes
 	 * HWCAP_S390_HIGH_GPRS is bit 9.
@@ -772,22 +753,15 @@ static void __init setup_hwcaps(void)
 	 */
 	if (test_facility(129))
 		elf_hwcap |= HWCAP_S390_VXRS;
-#endif
-
 	get_cpu_id(&cpu_id);
 	add_device_randomness(&cpu_id, sizeof(cpu_id));
 	switch (cpu_id.machine) {
 	case 0x9672:
-#if !defined(CONFIG_64BIT)
-	default:	/* Use "g5" as default for 31 bit kernels. */
-#endif
 		strcpy(elf_platform, "g5");
 		break;
 	case 0x2064:
 	case 0x2066:
-#if defined(CONFIG_64BIT)
 	default:	/* Use "z900" as default for 64 bit kernels. */
-#endif
 		strcpy(elf_platform, "z900");
 		break;
 	case 0x2084:
@@ -839,19 +813,6 @@ void __init setup_arch(char **cmdline_p)
         /*
          * print what head.S has found out about the machine
          */
-#ifndef CONFIG_64BIT
-	if (MACHINE_IS_VM)
-		pr_info("Linux is running as a z/VM "
-			"guest operating system in 31-bit mode\n");
-	else if (MACHINE_IS_LPAR)
-		pr_info("Linux is running natively in 31-bit mode\n");
-	if (MACHINE_HAS_IEEE)
-		pr_info("The hardware system has IEEE compatible "
-			"floating point units\n");
-	else
-		pr_info("The hardware system has no IEEE compatible "
-			"floating point units\n");
-#else /* CONFIG_64BIT */
 	if (MACHINE_IS_VM)
 		pr_info("Linux is running as a z/VM "
 			"guest operating system in 64-bit mode\n");
@@ -859,7 +820,6 @@ void __init setup_arch(char **cmdline_p)
 		pr_info("Linux is running under KVM in 64-bit mode\n");
 	else if (MACHINE_IS_LPAR)
 		pr_info("Linux is running natively in 64-bit mode\n");
-#endif /* CONFIG_64BIT */
 
 	/* Have one command line that is parsed and saved in /proc/cmdline */
 	/* boot_command_line has been already set up in early.c */
@@ -930,35 +890,3 @@ void __init setup_arch(char **cmdline_p)
 	/* Add system specific data to the random pool */
 	setup_randomness();
 }
-
-#ifdef CONFIG_32BIT
-static int no_removal_warning __initdata;
-
-static int __init parse_no_removal_warning(char *str)
-{
-	no_removal_warning = 1;
-	return 0;
-}
-__setup("no_removal_warning", parse_no_removal_warning);
-
-static int __init removal_warning(void)
-{
-	if (no_removal_warning)
-		return 0;
-	printk(KERN_ALERT "\n\n");
-	printk(KERN_CONT "Warning - you are using a 31 bit kernel!\n\n");
-	printk(KERN_CONT "We plan to remove 31 bit kernel support from the kernel sources in March 2015.\n");
-	printk(KERN_CONT "Currently we assume that nobody is using the 31 bit kernel on old 31 bit\n");
-	printk(KERN_CONT "hardware anymore. If you think that the code should not be removed and also\n");
-	printk(KERN_CONT "future versions of the Linux kernel should be able to run in 31 bit mode\n");
-	printk(KERN_CONT "please let us know. Please write to:\n");
-	printk(KERN_CONT "linux390@de.ibm.com (mail address) and/or\n");
-	printk(KERN_CONT "linux-s390@vger.kernel.org (mailing list).\n\n");
-	printk(KERN_CONT "Thank you!\n\n");
-	printk(KERN_CONT "If this kernel runs on a 64 bit machine you may consider using a 64 bit kernel.\n");
-	printk(KERN_CONT "This message can be disabled with the \"no_removal_warning\" kernel parameter.\n");
-	schedule_timeout_uninterruptible(300 * HZ);
-	return 0;
-}
-early_initcall(removal_warning);
-#endif

arch/s390/kernel/signal.c

@@ -106,7 +106,6 @@ static void store_sigregs(void)
 {
 	save_access_regs(current->thread.acrs);
 	save_fp_ctl(&current->thread.fp_regs.fpc);
-#ifdef CONFIG_64BIT
 	if (current->thread.vxrs) {
 		int i;
 
@@ -115,7 +114,6 @@ static void store_sigregs(void)
 			current->thread.fp_regs.fprs[i] =
 				*(freg_t *)(current->thread.vxrs + i);
 	} else
-#endif
 		save_fp_regs(current->thread.fp_regs.fprs);
 }
 
@@ -124,7 +122,6 @@ static void load_sigregs(void)
 {
 	restore_access_regs(current->thread.acrs);
 	/* restore_fp_ctl is done in restore_sigregs */
-#ifdef CONFIG_64BIT
 	if (current->thread.vxrs) {
 		int i;
 
@@ -133,7 +130,6 @@ static void load_sigregs(void)
 				current->thread.fp_regs.fprs[i];
 		restore_vx_regs(current->thread.vxrs);
 	} else
-#endif
 		restore_fp_regs(current->thread.fp_regs.fprs);
 }
 
@@ -200,7 +196,6 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
 static int save_sigregs_ext(struct pt_regs *regs,
 			    _sigregs_ext __user *sregs_ext)
 {
-#ifdef CONFIG_64BIT
 	__u64 vxrs[__NUM_VXRS_LOW];
 	int i;
 
@@ -215,14 +210,12 @@ static int save_sigregs_ext(struct pt_regs *regs,
 				   sizeof(sregs_ext->vxrs_high)))
 			return -EFAULT;
 	}
-#endif
 	return 0;
 }
 
 static int restore_sigregs_ext(struct pt_regs *regs,
 			       _sigregs_ext __user *sregs_ext)
 {
-#ifdef CONFIG_64BIT
 	__u64 vxrs[__NUM_VXRS_LOW];
 	int i;
 
@@ -237,7 +230,6 @@ static int restore_sigregs_ext(struct pt_regs *regs,
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
 			*((__u64 *)(current->thread.vxrs + i) + 1) = vxrs[i];
 	}
-#endif
 	return 0;
 }
 
@@ -416,13 +408,11 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
 	 * included in the signal frame on a 31-bit system.
 	 */
 	uc_flags = 0;
-#ifdef CONFIG_64BIT
 	if (MACHINE_HAS_VX) {
 		frame_size += sizeof(_sigregs_ext);
 		if (current->thread.vxrs)
 			uc_flags |= UC_VXRS;
 	}
-#endif
 	frame = get_sigframe(&ksig->ka, regs, frame_size);
 	if (frame == (void __user *) -1UL)
 		return -EFAULT;

arch/s390/kernel/smp.c

@@ -198,19 +198,11 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
 	lc->panic_stack = panic_stack + PANIC_FRAME_OFFSET;
 	lc->cpu_nr = cpu;
 	lc->spinlock_lockval = arch_spin_lockval(cpu);
-#ifndef CONFIG_64BIT
-	if (MACHINE_HAS_IEEE) {
-		lc->extended_save_area_addr = get_zeroed_page(GFP_KERNEL);
-		if (!lc->extended_save_area_addr)
-			goto out;
-	}
-#else
 	if (MACHINE_HAS_VX)
 		lc->vector_save_area_addr =
 			(unsigned long) &lc->vector_save_area;
 	if (vdso_alloc_per_cpu(lc))
 		goto out;
-#endif
 	lowcore_ptr[cpu] = lc;
 	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, (u32)(unsigned long) lc);
 	return 0;
@@ -229,16 +221,7 @@ static void pcpu_free_lowcore(struct pcpu *pcpu)
 {
 	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, 0);
 	lowcore_ptr[pcpu - pcpu_devices] = NULL;
-#ifndef CONFIG_64BIT
-	if (MACHINE_HAS_IEEE) {
-		struct _lowcore *lc = pcpu->lowcore;
-
-		free_page((unsigned long) lc->extended_save_area_addr);
-		lc->extended_save_area_addr = 0;
-	}
-#else
 	vdso_free_per_cpu(pcpu->lowcore);
-#endif
 	if (pcpu == &pcpu_devices[0])
 		return;
 	free_page(pcpu->lowcore->panic_stack-PANIC_FRAME_OFFSET);
@@ -492,22 +475,6 @@ void arch_send_call_function_single_ipi(int cpu)
 	pcpu_ec_call(pcpu_devices + cpu, ec_call_function_single);
 }
 
-#ifndef CONFIG_64BIT
-/*
- * this function sends a 'purge tlb' signal to another CPU.
- */
-static void smp_ptlb_callback(void *info)
-{
-	__tlb_flush_local();
-}
-
-void smp_ptlb_all(void)
-{
-	on_each_cpu(smp_ptlb_callback, NULL, 1);
-}
-EXPORT_SYMBOL(smp_ptlb_all);
-#endif /* ! CONFIG_64BIT */
-
 /*
  * this function sends a 'reschedule' IPI to another CPU.
  * it goes straight through and wastes no time serializing
@@ -851,7 +818,8 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
 	pcpu_prepare_secondary(pcpu, cpu);
 	pcpu_attach_task(pcpu, tidle);
 	pcpu_start_fn(pcpu, smp_start_secondary, NULL);
-	while (!cpu_online(cpu))
+	/* Wait until cpu puts itself in the online & active maps */
+	while (!cpu_online(cpu) || !cpu_active(cpu))
 		cpu_relax();
 	return 0;
 }

arch/s390/kernel/suspend.c

@@ -138,6 +138,8 @@ int pfn_is_nosave(unsigned long pfn)
 {
 	unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
 	unsigned long nosave_end_pfn = PFN_DOWN(__pa(&__nosave_end));
+	unsigned long eshared_pfn = PFN_DOWN(__pa(&_eshared)) - 1;
+	unsigned long stext_pfn = PFN_DOWN(__pa(&_stext));
 
 	/* Always save lowcore pages (LC protection might be enabled). */
 	if (pfn <= LC_PAGES)
@@ -145,6 +147,8 @@ int pfn_is_nosave(unsigned long pfn)
 	if (pfn >= nosave_begin_pfn && pfn < nosave_end_pfn)
 		return 1;
 	/* Skip memory holes and read-only pages (NSS, DCSS, ...). */
+	if (pfn >= stext_pfn && pfn <= eshared_pfn)
+		return ipl_info.type == IPL_TYPE_NSS ? 1 : 0;
 	if (tprot(PFN_PHYS(pfn)))
 		return 1;
 	return 0;

arch/s390/kernel/sys_s390.c

@@ -76,7 +76,6 @@ SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, unsigned long, second,
 	return sys_ipc(call, first, second, third, ptr, third);
 }
 
-#ifdef CONFIG_64BIT
 SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
 {
 	unsigned int ret;
@@ -90,51 +89,3 @@ SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
 
 	return ret;
 }
-#endif /* CONFIG_64BIT */
-
-/*
- * Wrapper function for sys_fadvise64/fadvise64_64
- */
-#ifndef CONFIG_64BIT
-
-SYSCALL_DEFINE5(s390_fadvise64, int, fd, u32, offset_high, u32, offset_low,
-		size_t, len, int, advice)
-{
-	return sys_fadvise64(fd, (u64) offset_high << 32 | offset_low,
-			len, advice);
-}
-
-struct fadvise64_64_args {
-	int fd;
-	long long offset;
-	long long len;
-	int advice;
-};
-
-SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, args)
-{
-	struct fadvise64_64_args a;
-
-	if ( copy_from_user(&a, args, sizeof(a)) )
-		return -EFAULT;
-	return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
-}
-
-/*
- * This is a wrapper to call sys_fallocate(). For 31 bit s390 the last
- * 64 bit argument "len" is split into the upper and lower 32 bits. The
- * system call wrapper in the user space loads the value to %r6/%r7.
- * The code in entry.S keeps the values in %r2 - %r6 where they are and
- * stores %r7 to 96(%r15). But the standard C linkage requires that
- * the whole 64 bit value for len is stored on the stack and doesn't
- * use %r6 at all. So s390_fallocate has to convert the arguments from
- *   %r2: fd, %r3: mode, %r4/%r5: offset, %r6/96(%r15)-99(%r15): len
- * to
- *   %r2: fd, %r3: mode, %r4/%r5: offset, 96(%r15)-103(%r15): len
- */
-SYSCALL_DEFINE5(s390_fallocate, int, fd, int, mode, loff_t, offset,
-			       u32, len_high, u32, len_low)
-{
-	return sys_fallocate(fd, mode, offset, ((u64)len_high << 32) | len_low);
-}
-#endif

arch/s390/kernel/syscalls.S

@@ -1,365 +1,365 @@
 /*
  * definitions for sys_call_table, each line represents an
- * entry in the table in the form 
- * SYSCALL(31 bit syscall, 64 bit syscall, 31 bit emulated syscall)
+ * entry in the table in the form
+ * SYSCALL(64 bit syscall, 31 bit emulated syscall)
  *
- * this file is meant to be included from entry.S and entry64.S
+ * this file is meant to be included from entry.S
  */
 
-#define NI_SYSCALL SYSCALL(sys_ni_syscall,sys_ni_syscall,sys_ni_syscall)
+#define NI_SYSCALL SYSCALL(sys_ni_syscall,sys_ni_syscall)
 
-NI_SYSCALL							/* 0 */
-SYSCALL(sys_exit,sys_exit,compat_sys_exit)
-SYSCALL(sys_fork,sys_fork,sys_fork)
-SYSCALL(sys_read,sys_read,compat_sys_s390_read)
-SYSCALL(sys_write,sys_write,compat_sys_s390_write)
-SYSCALL(sys_open,sys_open,compat_sys_open)			/* 5 */
-SYSCALL(sys_close,sys_close,compat_sys_close)
-SYSCALL(sys_restart_syscall,sys_restart_syscall,sys_restart_syscall)
-SYSCALL(sys_creat,sys_creat,compat_sys_creat)
-SYSCALL(sys_link,sys_link,compat_sys_link)
-SYSCALL(sys_unlink,sys_unlink,compat_sys_unlink)		/* 10 */
-SYSCALL(sys_execve,sys_execve,compat_sys_execve)
-SYSCALL(sys_chdir,sys_chdir,compat_sys_chdir)
-SYSCALL(sys_time,sys_ni_syscall,compat_sys_time)		/* old time syscall */
-SYSCALL(sys_mknod,sys_mknod,compat_sys_mknod)
-SYSCALL(sys_chmod,sys_chmod,compat_sys_chmod)			/* 15 */
-SYSCALL(sys_lchown16,sys_ni_syscall,compat_sys_s390_lchown16)	/* old lchown16 syscall*/
-NI_SYSCALL							/* old break syscall holder */
-NI_SYSCALL							/* old stat syscall holder */
-SYSCALL(sys_lseek,sys_lseek,compat_sys_lseek)
-SYSCALL(sys_getpid,sys_getpid,sys_getpid)			/* 20 */
-SYSCALL(sys_mount,sys_mount,compat_sys_mount)
-SYSCALL(sys_oldumount,sys_oldumount,compat_sys_oldumount)
-SYSCALL(sys_setuid16,sys_ni_syscall,compat_sys_s390_setuid16)	/* old setuid16 syscall*/
-SYSCALL(sys_getuid16,sys_ni_syscall,compat_sys_s390_getuid16)	/* old getuid16 syscall*/
-SYSCALL(sys_stime,sys_ni_syscall,compat_sys_stime)		/* 25 old stime syscall */
-SYSCALL(sys_ptrace,sys_ptrace,compat_sys_ptrace)
-SYSCALL(sys_alarm,sys_alarm,compat_sys_alarm)
-NI_SYSCALL							/* old fstat syscall */
-SYSCALL(sys_pause,sys_pause,sys_pause)
-SYSCALL(sys_utime,sys_utime,compat_sys_utime)		/* 30 */
-NI_SYSCALL							/* old stty syscall */
-NI_SYSCALL							/* old gtty syscall */
-SYSCALL(sys_access,sys_access,compat_sys_access)
-SYSCALL(sys_nice,sys_nice,compat_sys_nice)
-NI_SYSCALL							/* 35 old ftime syscall */
-SYSCALL(sys_sync,sys_sync,sys_sync)
-SYSCALL(sys_kill,sys_kill,compat_sys_kill)
-SYSCALL(sys_rename,sys_rename,compat_sys_rename)
-SYSCALL(sys_mkdir,sys_mkdir,compat_sys_mkdir)
-SYSCALL(sys_rmdir,sys_rmdir,compat_sys_rmdir)		/* 40 */
-SYSCALL(sys_dup,sys_dup,compat_sys_dup)
-SYSCALL(sys_pipe,sys_pipe,compat_sys_pipe)
-SYSCALL(sys_times,sys_times,compat_sys_times)
-NI_SYSCALL							/* old prof syscall */
-SYSCALL(sys_brk,sys_brk,compat_sys_brk)				/* 45 */
-SYSCALL(sys_setgid16,sys_ni_syscall,compat_sys_s390_setgid16)	/* old setgid16 syscall*/
-SYSCALL(sys_getgid16,sys_ni_syscall,compat_sys_s390_getgid16)	/* old getgid16 syscall*/
-SYSCALL(sys_signal,sys_signal,compat_sys_signal)
-SYSCALL(sys_geteuid16,sys_ni_syscall,compat_sys_s390_geteuid16)	/* old geteuid16 syscall */
-SYSCALL(sys_getegid16,sys_ni_syscall,compat_sys_s390_getegid16)	/* 50 old getegid16 syscall */
-SYSCALL(sys_acct,sys_acct,compat_sys_acct)
-SYSCALL(sys_umount,sys_umount,compat_sys_umount)
-NI_SYSCALL							/* old lock syscall */
-SYSCALL(sys_ioctl,sys_ioctl,compat_sys_ioctl)
-SYSCALL(sys_fcntl,sys_fcntl,compat_sys_fcntl)		/* 55 */
-NI_SYSCALL							/* intel mpx syscall */
-SYSCALL(sys_setpgid,sys_setpgid,compat_sys_setpgid)
-NI_SYSCALL							/* old ulimit syscall */
-NI_SYSCALL							/* old uname syscall */
-SYSCALL(sys_umask,sys_umask,compat_sys_umask)			/* 60 */
-SYSCALL(sys_chroot,sys_chroot,compat_sys_chroot)
-SYSCALL(sys_ustat,sys_ustat,compat_sys_ustat)
-SYSCALL(sys_dup2,sys_dup2,compat_sys_dup2)
-SYSCALL(sys_getppid,sys_getppid,sys_getppid)
-SYSCALL(sys_getpgrp,sys_getpgrp,sys_getpgrp)			/* 65 */
-SYSCALL(sys_setsid,sys_setsid,sys_setsid)
-SYSCALL(sys_sigaction,sys_sigaction,compat_sys_sigaction)
-NI_SYSCALL							/* old sgetmask syscall*/
-NI_SYSCALL							/* old ssetmask syscall*/
-SYSCALL(sys_setreuid16,sys_ni_syscall,compat_sys_s390_setreuid16) /* old setreuid16 syscall */
-SYSCALL(sys_setregid16,sys_ni_syscall,compat_sys_s390_setregid16) /* old setregid16 syscall */
-SYSCALL(sys_sigsuspend,sys_sigsuspend,compat_sys_sigsuspend)
-SYSCALL(sys_sigpending,sys_sigpending,compat_sys_sigpending)
-SYSCALL(sys_sethostname,sys_sethostname,compat_sys_sethostname)
-SYSCALL(sys_setrlimit,sys_setrlimit,compat_sys_setrlimit)	/* 75 */
-SYSCALL(sys_old_getrlimit,sys_getrlimit,compat_sys_old_getrlimit)
-SYSCALL(sys_getrusage,sys_getrusage,compat_sys_getrusage)
-SYSCALL(sys_gettimeofday,sys_gettimeofday,compat_sys_gettimeofday)
-SYSCALL(sys_settimeofday,sys_settimeofday,compat_sys_settimeofday)
-SYSCALL(sys_getgroups16,sys_ni_syscall,compat_sys_s390_getgroups16)	/* 80 old getgroups16 syscall */
-SYSCALL(sys_setgroups16,sys_ni_syscall,compat_sys_s390_setgroups16)	/* old setgroups16 syscall */
-NI_SYSCALL							/* old select syscall */
-SYSCALL(sys_symlink,sys_symlink,compat_sys_symlink)
-NI_SYSCALL							/* old lstat syscall */
-SYSCALL(sys_readlink,sys_readlink,compat_sys_readlink)		/* 85 */
-SYSCALL(sys_uselib,sys_uselib,compat_sys_uselib)
-SYSCALL(sys_swapon,sys_swapon,compat_sys_swapon)
-SYSCALL(sys_reboot,sys_reboot,compat_sys_reboot)
-SYSCALL(sys_ni_syscall,sys_ni_syscall,compat_sys_old_readdir)	/* old readdir syscall */
-SYSCALL(sys_old_mmap,sys_old_mmap,compat_sys_s390_old_mmap)	/* 90 */
-SYSCALL(sys_munmap,sys_munmap,compat_sys_munmap)
-SYSCALL(sys_truncate,sys_truncate,compat_sys_truncate)
-SYSCALL(sys_ftruncate,sys_ftruncate,compat_sys_ftruncate)
-SYSCALL(sys_fchmod,sys_fchmod,compat_sys_fchmod)
-SYSCALL(sys_fchown16,sys_ni_syscall,compat_sys_s390_fchown16)	/* 95 old fchown16 syscall*/
-SYSCALL(sys_getpriority,sys_getpriority,compat_sys_getpriority)
-SYSCALL(sys_setpriority,sys_setpriority,compat_sys_setpriority)
-NI_SYSCALL							/* old profil syscall */
-SYSCALL(sys_statfs,sys_statfs,compat_sys_statfs)
-SYSCALL(sys_fstatfs,sys_fstatfs,compat_sys_fstatfs)	/* 100 */
-NI_SYSCALL							/* ioperm for i386 */
-SYSCALL(sys_socketcall,sys_socketcall,compat_sys_socketcall)
-SYSCALL(sys_syslog,sys_syslog,compat_sys_syslog)
-SYSCALL(sys_setitimer,sys_setitimer,compat_sys_setitimer)
-SYSCALL(sys_getitimer,sys_getitimer,compat_sys_getitimer)	/* 105 */
-SYSCALL(sys_newstat,sys_newstat,compat_sys_newstat)
-SYSCALL(sys_newlstat,sys_newlstat,compat_sys_newlstat)
-SYSCALL(sys_newfstat,sys_newfstat,compat_sys_newfstat)
-NI_SYSCALL							/* old uname syscall */
-SYSCALL(sys_lookup_dcookie,sys_lookup_dcookie,compat_sys_lookup_dcookie)	/* 110 */
-SYSCALL(sys_vhangup,sys_vhangup,sys_vhangup)
-NI_SYSCALL							/* old "idle" system call */
-NI_SYSCALL							/* vm86old for i386 */
-SYSCALL(sys_wait4,sys_wait4,compat_sys_wait4)
-SYSCALL(sys_swapoff,sys_swapoff,compat_sys_swapoff)		/* 115 */
-SYSCALL(sys_sysinfo,sys_sysinfo,compat_sys_sysinfo)
-SYSCALL(sys_s390_ipc,sys_s390_ipc,compat_sys_s390_ipc)
-SYSCALL(sys_fsync,sys_fsync,compat_sys_fsync)
-SYSCALL(sys_sigreturn,sys_sigreturn,compat_sys_sigreturn)
-SYSCALL(sys_clone,sys_clone,compat_sys_clone)			/* 120 */
-SYSCALL(sys_setdomainname,sys_setdomainname,compat_sys_setdomainname)
-SYSCALL(sys_newuname,sys_newuname,compat_sys_newuname)
-NI_SYSCALL							/* modify_ldt for i386 */
-SYSCALL(sys_adjtimex,sys_adjtimex,compat_sys_adjtimex)
-SYSCALL(sys_mprotect,sys_mprotect,compat_sys_mprotect)		/* 125 */
-SYSCALL(sys_sigprocmask,sys_sigprocmask,compat_sys_sigprocmask)
-NI_SYSCALL							/* old "create module" */
-SYSCALL(sys_init_module,sys_init_module,compat_sys_init_module)
-SYSCALL(sys_delete_module,sys_delete_module,compat_sys_delete_module)
-NI_SYSCALL							/* 130: old get_kernel_syms */
-SYSCALL(sys_quotactl,sys_quotactl,compat_sys_quotactl)
-SYSCALL(sys_getpgid,sys_getpgid,compat_sys_getpgid)
-SYSCALL(sys_fchdir,sys_fchdir,compat_sys_fchdir)
-SYSCALL(sys_bdflush,sys_bdflush,compat_sys_bdflush)
-SYSCALL(sys_sysfs,sys_sysfs,compat_sys_sysfs)		/* 135 */
-SYSCALL(sys_personality,sys_s390_personality,compat_sys_s390_personality)
-NI_SYSCALL							/* for afs_syscall */
-SYSCALL(sys_setfsuid16,sys_ni_syscall,compat_sys_s390_setfsuid16)	/* old setfsuid16 syscall */
-SYSCALL(sys_setfsgid16,sys_ni_syscall,compat_sys_s390_setfsgid16)	/* old setfsgid16 syscall */
-SYSCALL(sys_llseek,sys_llseek,compat_sys_llseek)		/* 140 */
-SYSCALL(sys_getdents,sys_getdents,compat_sys_getdents)
-SYSCALL(sys_select,sys_select,compat_sys_select)
-SYSCALL(sys_flock,sys_flock,compat_sys_flock)
-SYSCALL(sys_msync,sys_msync,compat_sys_msync)
-SYSCALL(sys_readv,sys_readv,compat_sys_readv)		/* 145 */
-SYSCALL(sys_writev,sys_writev,compat_sys_writev)
-SYSCALL(sys_getsid,sys_getsid,compat_sys_getsid)
-SYSCALL(sys_fdatasync,sys_fdatasync,compat_sys_fdatasync)
-SYSCALL(sys_sysctl,sys_sysctl,compat_sys_sysctl)
-SYSCALL(sys_mlock,sys_mlock,compat_sys_mlock)			/* 150 */
-SYSCALL(sys_munlock,sys_munlock,compat_sys_munlock)
-SYSCALL(sys_mlockall,sys_mlockall,compat_sys_mlockall)
-SYSCALL(sys_munlockall,sys_munlockall,sys_munlockall)
-SYSCALL(sys_sched_setparam,sys_sched_setparam,compat_sys_sched_setparam)
-SYSCALL(sys_sched_getparam,sys_sched_getparam,compat_sys_sched_getparam)	/* 155 */
-SYSCALL(sys_sched_setscheduler,sys_sched_setscheduler,compat_sys_sched_setscheduler)
-SYSCALL(sys_sched_getscheduler,sys_sched_getscheduler,compat_sys_sched_getscheduler)
-SYSCALL(sys_sched_yield,sys_sched_yield,sys_sched_yield)
-SYSCALL(sys_sched_get_priority_max,sys_sched_get_priority_max,compat_sys_sched_get_priority_max)
-SYSCALL(sys_sched_get_priority_min,sys_sched_get_priority_min,compat_sys_sched_get_priority_min)	/* 160 */
-SYSCALL(sys_sched_rr_get_interval,sys_sched_rr_get_interval,compat_sys_sched_rr_get_interval)
-SYSCALL(sys_nanosleep,sys_nanosleep,compat_sys_nanosleep)
-SYSCALL(sys_mremap,sys_mremap,compat_sys_mremap)
-SYSCALL(sys_setresuid16,sys_ni_syscall,compat_sys_s390_setresuid16)	/* old setresuid16 syscall */
-SYSCALL(sys_getresuid16,sys_ni_syscall,compat_sys_s390_getresuid16)	/* 165 old getresuid16 syscall */
-NI_SYSCALL							/* for vm86 */
-NI_SYSCALL							/* old sys_query_module */
-SYSCALL(sys_poll,sys_poll,compat_sys_poll)
-NI_SYSCALL							/* old nfsservctl */
-SYSCALL(sys_setresgid16,sys_ni_syscall,compat_sys_s390_setresgid16)	/* 170 old setresgid16 syscall */
-SYSCALL(sys_getresgid16,sys_ni_syscall,compat_sys_s390_getresgid16)	/* old getresgid16 syscall */
-SYSCALL(sys_prctl,sys_prctl,compat_sys_prctl)
-SYSCALL(sys_rt_sigreturn,sys_rt_sigreturn,compat_sys_rt_sigreturn)
-SYSCALL(sys_rt_sigaction,sys_rt_sigaction,compat_sys_rt_sigaction)
-SYSCALL(sys_rt_sigprocmask,sys_rt_sigprocmask,compat_sys_rt_sigprocmask) /* 175 */
-SYSCALL(sys_rt_sigpending,sys_rt_sigpending,compat_sys_rt_sigpending)
-SYSCALL(sys_rt_sigtimedwait,sys_rt_sigtimedwait,compat_sys_rt_sigtimedwait)
-SYSCALL(sys_rt_sigqueueinfo,sys_rt_sigqueueinfo,compat_sys_rt_sigqueueinfo)
-SYSCALL(sys_rt_sigsuspend,sys_rt_sigsuspend,compat_sys_rt_sigsuspend)
-SYSCALL(sys_pread64,sys_pread64,compat_sys_s390_pread64)		/* 180 */
-SYSCALL(sys_pwrite64,sys_pwrite64,compat_sys_s390_pwrite64)
-SYSCALL(sys_chown16,sys_ni_syscall,compat_sys_s390_chown16)	/* old chown16 syscall */
-SYSCALL(sys_getcwd,sys_getcwd,compat_sys_getcwd)
-SYSCALL(sys_capget,sys_capget,compat_sys_capget)
-SYSCALL(sys_capset,sys_capset,compat_sys_capset)		/* 185 */
-SYSCALL(sys_sigaltstack,sys_sigaltstack,compat_sys_sigaltstack)
-SYSCALL(sys_sendfile,sys_sendfile64,compat_sys_sendfile)
-NI_SYSCALL							/* streams1 */
-NI_SYSCALL							/* streams2 */
-SYSCALL(sys_vfork,sys_vfork,sys_vfork)				/* 190 */
-SYSCALL(sys_getrlimit,sys_getrlimit,compat_sys_getrlimit)
-SYSCALL(sys_mmap2,sys_mmap2,compat_sys_s390_mmap2)
-SYSCALL(sys_truncate64,sys_ni_syscall,compat_sys_s390_truncate64)
-SYSCALL(sys_ftruncate64,sys_ni_syscall,compat_sys_s390_ftruncate64)
-SYSCALL(sys_stat64,sys_ni_syscall,compat_sys_s390_stat64)		/* 195 */
-SYSCALL(sys_lstat64,sys_ni_syscall,compat_sys_s390_lstat64)
-SYSCALL(sys_fstat64,sys_ni_syscall,compat_sys_s390_fstat64)
-SYSCALL(sys_lchown,sys_lchown,compat_sys_lchown)
-SYSCALL(sys_getuid,sys_getuid,sys_getuid)
-SYSCALL(sys_getgid,sys_getgid,sys_getgid)			/* 200 */
-SYSCALL(sys_geteuid,sys_geteuid,sys_geteuid)
-SYSCALL(sys_getegid,sys_getegid,sys_getegid)
-SYSCALL(sys_setreuid,sys_setreuid,compat_sys_setreuid)
-SYSCALL(sys_setregid,sys_setregid,compat_sys_setregid)
-SYSCALL(sys_getgroups,sys_getgroups,compat_sys_getgroups)	/* 205 */
-SYSCALL(sys_setgroups,sys_setgroups,compat_sys_setgroups)
-SYSCALL(sys_fchown,sys_fchown,compat_sys_fchown)
-SYSCALL(sys_setresuid,sys_setresuid,compat_sys_setresuid)
-SYSCALL(sys_getresuid,sys_getresuid,compat_sys_getresuid)
-SYSCALL(sys_setresgid,sys_setresgid,compat_sys_setresgid)	/* 210 */
-SYSCALL(sys_getresgid,sys_getresgid,compat_sys_getresgid)
-SYSCALL(sys_chown,sys_chown,compat_sys_chown)
-SYSCALL(sys_setuid,sys_setuid,compat_sys_setuid)
-SYSCALL(sys_setgid,sys_setgid,compat_sys_setgid)
-SYSCALL(sys_setfsuid,sys_setfsuid,compat_sys_setfsuid)	/* 215 */
-SYSCALL(sys_setfsgid,sys_setfsgid,compat_sys_setfsgid)
-SYSCALL(sys_pivot_root,sys_pivot_root,compat_sys_pivot_root)
-SYSCALL(sys_mincore,sys_mincore,compat_sys_mincore)
-SYSCALL(sys_madvise,sys_madvise,compat_sys_madvise)
-SYSCALL(sys_getdents64,sys_getdents64,compat_sys_getdents64)	/* 220 */
-SYSCALL(sys_fcntl64,sys_ni_syscall,compat_sys_fcntl64)
-SYSCALL(sys_readahead,sys_readahead,compat_sys_s390_readahead)
-SYSCALL(sys_sendfile64,sys_ni_syscall,compat_sys_sendfile64)
-SYSCALL(sys_setxattr,sys_setxattr,compat_sys_setxattr)
-SYSCALL(sys_lsetxattr,sys_lsetxattr,compat_sys_lsetxattr)	/* 225 */
-SYSCALL(sys_fsetxattr,sys_fsetxattr,compat_sys_fsetxattr)
-SYSCALL(sys_getxattr,sys_getxattr,compat_sys_getxattr)
-SYSCALL(sys_lgetxattr,sys_lgetxattr,compat_sys_lgetxattr)
-SYSCALL(sys_fgetxattr,sys_fgetxattr,compat_sys_fgetxattr)
-SYSCALL(sys_listxattr,sys_listxattr,compat_sys_listxattr)	/* 230 */
-SYSCALL(sys_llistxattr,sys_llistxattr,compat_sys_llistxattr)
-SYSCALL(sys_flistxattr,sys_flistxattr,compat_sys_flistxattr)
-SYSCALL(sys_removexattr,sys_removexattr,compat_sys_removexattr)
-SYSCALL(sys_lremovexattr,sys_lremovexattr,compat_sys_lremovexattr)
-SYSCALL(sys_fremovexattr,sys_fremovexattr,compat_sys_fremovexattr)	/* 235 */
-SYSCALL(sys_gettid,sys_gettid,sys_gettid)
-SYSCALL(sys_tkill,sys_tkill,compat_sys_tkill)
-SYSCALL(sys_futex,sys_futex,compat_sys_futex)
-SYSCALL(sys_sched_setaffinity,sys_sched_setaffinity,compat_sys_sched_setaffinity)
-SYSCALL(sys_sched_getaffinity,sys_sched_getaffinity,compat_sys_sched_getaffinity)	/* 240 */
-SYSCALL(sys_tgkill,sys_tgkill,compat_sys_tgkill)
-NI_SYSCALL							/* reserved for TUX */
-SYSCALL(sys_io_setup,sys_io_setup,compat_sys_io_setup)
-SYSCALL(sys_io_destroy,sys_io_destroy,compat_sys_io_destroy)
-SYSCALL(sys_io_getevents,sys_io_getevents,compat_sys_io_getevents)	/* 245 */
-SYSCALL(sys_io_submit,sys_io_submit,compat_sys_io_submit)
-SYSCALL(sys_io_cancel,sys_io_cancel,compat_sys_io_cancel)
-SYSCALL(sys_exit_group,sys_exit_group,compat_sys_exit_group)
-SYSCALL(sys_epoll_create,sys_epoll_create,compat_sys_epoll_create)
-SYSCALL(sys_epoll_ctl,sys_epoll_ctl,compat_sys_epoll_ctl)	/* 250 */
-SYSCALL(sys_epoll_wait,sys_epoll_wait,compat_sys_epoll_wait)
-SYSCALL(sys_set_tid_address,sys_set_tid_address,compat_sys_set_tid_address)
-SYSCALL(sys_s390_fadvise64,sys_fadvise64_64,compat_sys_s390_fadvise64)
-SYSCALL(sys_timer_create,sys_timer_create,compat_sys_timer_create)
-SYSCALL(sys_timer_settime,sys_timer_settime,compat_sys_timer_settime)	/* 255 */
-SYSCALL(sys_timer_gettime,sys_timer_gettime,compat_sys_timer_gettime)
-SYSCALL(sys_timer_getoverrun,sys_timer_getoverrun,compat_sys_timer_getoverrun)
-SYSCALL(sys_timer_delete,sys_timer_delete,compat_sys_timer_delete)
-SYSCALL(sys_clock_settime,sys_clock_settime,compat_sys_clock_settime)
-SYSCALL(sys_clock_gettime,sys_clock_gettime,compat_sys_clock_gettime)	/* 260 */
-SYSCALL(sys_clock_getres,sys_clock_getres,compat_sys_clock_getres)
-SYSCALL(sys_clock_nanosleep,sys_clock_nanosleep,compat_sys_clock_nanosleep)
-NI_SYSCALL							/* reserved for vserver */
-SYSCALL(sys_s390_fadvise64_64,sys_ni_syscall,compat_sys_s390_fadvise64_64)
-SYSCALL(sys_statfs64,sys_statfs64,compat_sys_statfs64)
-SYSCALL(sys_fstatfs64,sys_fstatfs64,compat_sys_fstatfs64)
-SYSCALL(sys_remap_file_pages,sys_remap_file_pages,compat_sys_remap_file_pages)
-NI_SYSCALL							/* 268 sys_mbind */
-NI_SYSCALL							/* 269 sys_get_mempolicy */
-NI_SYSCALL							/* 270 sys_set_mempolicy */
-SYSCALL(sys_mq_open,sys_mq_open,compat_sys_mq_open)
-SYSCALL(sys_mq_unlink,sys_mq_unlink,compat_sys_mq_unlink)
-SYSCALL(sys_mq_timedsend,sys_mq_timedsend,compat_sys_mq_timedsend)
-SYSCALL(sys_mq_timedreceive,sys_mq_timedreceive,compat_sys_mq_timedreceive)
-SYSCALL(sys_mq_notify,sys_mq_notify,compat_sys_mq_notify) /* 275 */
-SYSCALL(sys_mq_getsetattr,sys_mq_getsetattr,compat_sys_mq_getsetattr)
-SYSCALL(sys_kexec_load,sys_kexec_load,compat_sys_kexec_load)
-SYSCALL(sys_add_key,sys_add_key,compat_sys_add_key)
-SYSCALL(sys_request_key,sys_request_key,compat_sys_request_key)
-SYSCALL(sys_keyctl,sys_keyctl,compat_sys_keyctl)		/* 280 */
-SYSCALL(sys_waitid,sys_waitid,compat_sys_waitid)
-SYSCALL(sys_ioprio_set,sys_ioprio_set,compat_sys_ioprio_set)
-SYSCALL(sys_ioprio_get,sys_ioprio_get,compat_sys_ioprio_get)
-SYSCALL(sys_inotify_init,sys_inotify_init,sys_inotify_init)
-SYSCALL(sys_inotify_add_watch,sys_inotify_add_watch,compat_sys_inotify_add_watch)	/* 285 */
-SYSCALL(sys_inotify_rm_watch,sys_inotify_rm_watch,compat_sys_inotify_rm_watch)
-NI_SYSCALL							/* 287 sys_migrate_pages */
-SYSCALL(sys_openat,sys_openat,compat_sys_openat)
-SYSCALL(sys_mkdirat,sys_mkdirat,compat_sys_mkdirat)
-SYSCALL(sys_mknodat,sys_mknodat,compat_sys_mknodat)	/* 290 */
-SYSCALL(sys_fchownat,sys_fchownat,compat_sys_fchownat)
-SYSCALL(sys_futimesat,sys_futimesat,compat_sys_futimesat)
-SYSCALL(sys_fstatat64,sys_newfstatat,compat_sys_s390_fstatat64)
-SYSCALL(sys_unlinkat,sys_unlinkat,compat_sys_unlinkat)
-SYSCALL(sys_renameat,sys_renameat,compat_sys_renameat)	/* 295 */
-SYSCALL(sys_linkat,sys_linkat,compat_sys_linkat)
-SYSCALL(sys_symlinkat,sys_symlinkat,compat_sys_symlinkat)
-SYSCALL(sys_readlinkat,sys_readlinkat,compat_sys_readlinkat)
-SYSCALL(sys_fchmodat,sys_fchmodat,compat_sys_fchmodat)
-SYSCALL(sys_faccessat,sys_faccessat,compat_sys_faccessat)	/* 300 */
-SYSCALL(sys_pselect6,sys_pselect6,compat_sys_pselect6)
-SYSCALL(sys_ppoll,sys_ppoll,compat_sys_ppoll)
-SYSCALL(sys_unshare,sys_unshare,compat_sys_unshare)
-SYSCALL(sys_set_robust_list,sys_set_robust_list,compat_sys_set_robust_list)
-SYSCALL(sys_get_robust_list,sys_get_robust_list,compat_sys_get_robust_list)
-SYSCALL(sys_splice,sys_splice,compat_sys_splice)
-SYSCALL(sys_sync_file_range,sys_sync_file_range,compat_sys_s390_sync_file_range)
-SYSCALL(sys_tee,sys_tee,compat_sys_tee)
-SYSCALL(sys_vmsplice,sys_vmsplice,compat_sys_vmsplice)
-NI_SYSCALL							/* 310 sys_move_pages */
-SYSCALL(sys_getcpu,sys_getcpu,compat_sys_getcpu)
-SYSCALL(sys_epoll_pwait,sys_epoll_pwait,compat_sys_epoll_pwait)
-SYSCALL(sys_utimes,sys_utimes,compat_sys_utimes)
-SYSCALL(sys_s390_fallocate,sys_fallocate,compat_sys_s390_fallocate)
-SYSCALL(sys_utimensat,sys_utimensat,compat_sys_utimensat)	/* 315 */
-SYSCALL(sys_signalfd,sys_signalfd,compat_sys_signalfd)
+NI_SYSCALL						/* 0 */
+SYSCALL(sys_exit,compat_sys_exit)
+SYSCALL(sys_fork,sys_fork)
+SYSCALL(sys_read,compat_sys_s390_read)
+SYSCALL(sys_write,compat_sys_s390_write)
+SYSCALL(sys_open,compat_sys_open)			/* 5 */
+SYSCALL(sys_close,compat_sys_close)
+SYSCALL(sys_restart_syscall,sys_restart_syscall)
+SYSCALL(sys_creat,compat_sys_creat)
+SYSCALL(sys_link,compat_sys_link)
+SYSCALL(sys_unlink,compat_sys_unlink)			/* 10 */
+SYSCALL(sys_execve,compat_sys_execve)
+SYSCALL(sys_chdir,compat_sys_chdir)
+SYSCALL(sys_ni_syscall,compat_sys_time)			/* old time syscall */
+SYSCALL(sys_mknod,compat_sys_mknod)
+SYSCALL(sys_chmod,compat_sys_chmod)			/* 15 */
+SYSCALL(sys_ni_syscall,compat_sys_s390_lchown16)	/* old lchown16 syscall*/
+NI_SYSCALL						/* old break syscall holder */
+NI_SYSCALL						/* old stat syscall holder */
+SYSCALL(sys_lseek,compat_sys_lseek)
+SYSCALL(sys_getpid,sys_getpid)				/* 20 */
+SYSCALL(sys_mount,compat_sys_mount)
+SYSCALL(sys_oldumount,compat_sys_oldumount)
+SYSCALL(sys_ni_syscall,compat_sys_s390_setuid16)	/* old setuid16 syscall*/
+SYSCALL(sys_ni_syscall,compat_sys_s390_getuid16)	/* old getuid16 syscall*/
+SYSCALL(sys_ni_syscall,compat_sys_stime)		/* 25 old stime syscall */
+SYSCALL(sys_ptrace,compat_sys_ptrace)
+SYSCALL(sys_alarm,compat_sys_alarm)
+NI_SYSCALL						/* old fstat syscall */
+SYSCALL(sys_pause,sys_pause)
+SYSCALL(sys_utime,compat_sys_utime)			/* 30 */
+NI_SYSCALL						/* old stty syscall */
+NI_SYSCALL						/* old gtty syscall */
+SYSCALL(sys_access,compat_sys_access)
+SYSCALL(sys_nice,compat_sys_nice)
+NI_SYSCALL						/* 35 old ftime syscall */
+SYSCALL(sys_sync,sys_sync)
+SYSCALL(sys_kill,compat_sys_kill)
+SYSCALL(sys_rename,compat_sys_rename)
+SYSCALL(sys_mkdir,compat_sys_mkdir)
+SYSCALL(sys_rmdir,compat_sys_rmdir)			/* 40 */
+SYSCALL(sys_dup,compat_sys_dup)
+SYSCALL(sys_pipe,compat_sys_pipe)
+SYSCALL(sys_times,compat_sys_times)
+NI_SYSCALL						/* old prof syscall */
+SYSCALL(sys_brk,compat_sys_brk)				/* 45 */
+SYSCALL(sys_ni_syscall,compat_sys_s390_setgid16)	/* old setgid16 syscall*/
+SYSCALL(sys_ni_syscall,compat_sys_s390_getgid16)	/* old getgid16 syscall*/
+SYSCALL(sys_signal,compat_sys_signal)
+SYSCALL(sys_ni_syscall,compat_sys_s390_geteuid16)	/* old geteuid16 syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_getegid16)	/* 50 old getegid16 syscall */
+SYSCALL(sys_acct,compat_sys_acct)
+SYSCALL(sys_umount,compat_sys_umount)
+NI_SYSCALL						/* old lock syscall */
+SYSCALL(sys_ioctl,compat_sys_ioctl)
+SYSCALL(sys_fcntl,compat_sys_fcntl)			/* 55 */
+NI_SYSCALL						/* intel mpx syscall */
+SYSCALL(sys_setpgid,compat_sys_setpgid)
+NI_SYSCALL						/* old ulimit syscall */
+NI_SYSCALL						/* old uname syscall */
+SYSCALL(sys_umask,compat_sys_umask)			/* 60 */
+SYSCALL(sys_chroot,compat_sys_chroot)
+SYSCALL(sys_ustat,compat_sys_ustat)
+SYSCALL(sys_dup2,compat_sys_dup2)
+SYSCALL(sys_getppid,sys_getppid)
+SYSCALL(sys_getpgrp,sys_getpgrp)			/* 65 */
+SYSCALL(sys_setsid,sys_setsid)
+SYSCALL(sys_sigaction,compat_sys_sigaction)
+NI_SYSCALL						/* old sgetmask syscall*/
+NI_SYSCALL						/* old ssetmask syscall*/
+SYSCALL(sys_ni_syscall,compat_sys_s390_setreuid16)	/* old setreuid16 syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_setregid16)	/* old setregid16 syscall */
+SYSCALL(sys_sigsuspend,compat_sys_sigsuspend)
+SYSCALL(sys_sigpending,compat_sys_sigpending)
+SYSCALL(sys_sethostname,compat_sys_sethostname)
+SYSCALL(sys_setrlimit,compat_sys_setrlimit)		/* 75 */
+SYSCALL(sys_getrlimit,compat_sys_old_getrlimit)
+SYSCALL(sys_getrusage,compat_sys_getrusage)
+SYSCALL(sys_gettimeofday,compat_sys_gettimeofday)
+SYSCALL(sys_settimeofday,compat_sys_settimeofday)
+SYSCALL(sys_ni_syscall,compat_sys_s390_getgroups16)	/* 80 old getgroups16 syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_setgroups16)	/* old setgroups16 syscall */
+NI_SYSCALL						/* old select syscall */
+SYSCALL(sys_symlink,compat_sys_symlink)
+NI_SYSCALL						/* old lstat syscall */
+SYSCALL(sys_readlink,compat_sys_readlink)		/* 85 */
+SYSCALL(sys_uselib,compat_sys_uselib)
+SYSCALL(sys_swapon,compat_sys_swapon)
+SYSCALL(sys_reboot,compat_sys_reboot)
+SYSCALL(sys_ni_syscall,compat_sys_old_readdir)		/* old readdir syscall */
+SYSCALL(sys_old_mmap,compat_sys_s390_old_mmap)		/* 90 */
+SYSCALL(sys_munmap,compat_sys_munmap)
+SYSCALL(sys_truncate,compat_sys_truncate)
+SYSCALL(sys_ftruncate,compat_sys_ftruncate)
+SYSCALL(sys_fchmod,compat_sys_fchmod)
+SYSCALL(sys_ni_syscall,compat_sys_s390_fchown16)	/* 95 old fchown16 syscall*/
+SYSCALL(sys_getpriority,compat_sys_getpriority)
+SYSCALL(sys_setpriority,compat_sys_setpriority)
+NI_SYSCALL						/* old profil syscall */
+SYSCALL(sys_statfs,compat_sys_statfs)
+SYSCALL(sys_fstatfs,compat_sys_fstatfs)			/* 100 */
+NI_SYSCALL						/* ioperm for i386 */
+SYSCALL(sys_socketcall,compat_sys_socketcall)
+SYSCALL(sys_syslog,compat_sys_syslog)
+SYSCALL(sys_setitimer,compat_sys_setitimer)
+SYSCALL(sys_getitimer,compat_sys_getitimer)		/* 105 */
+SYSCALL(sys_newstat,compat_sys_newstat)
+SYSCALL(sys_newlstat,compat_sys_newlstat)
+SYSCALL(sys_newfstat,compat_sys_newfstat)
+NI_SYSCALL						/* old uname syscall */
+SYSCALL(sys_lookup_dcookie,compat_sys_lookup_dcookie)	/* 110 */
+SYSCALL(sys_vhangup,sys_vhangup)
+NI_SYSCALL						/* old "idle" system call */
+NI_SYSCALL						/* vm86old for i386 */
+SYSCALL(sys_wait4,compat_sys_wait4)
+SYSCALL(sys_swapoff,compat_sys_swapoff)			/* 115 */
+SYSCALL(sys_sysinfo,compat_sys_sysinfo)
+SYSCALL(sys_s390_ipc,compat_sys_s390_ipc)
+SYSCALL(sys_fsync,compat_sys_fsync)
+SYSCALL(sys_sigreturn,compat_sys_sigreturn)
+SYSCALL(sys_clone,compat_sys_clone)			/* 120 */
+SYSCALL(sys_setdomainname,compat_sys_setdomainname)
+SYSCALL(sys_newuname,compat_sys_newuname)
+NI_SYSCALL						/* modify_ldt for i386 */
+SYSCALL(sys_adjtimex,compat_sys_adjtimex)
+SYSCALL(sys_mprotect,compat_sys_mprotect)		/* 125 */
+SYSCALL(sys_sigprocmask,compat_sys_sigprocmask)
+NI_SYSCALL						/* old "create module" */
+SYSCALL(sys_init_module,compat_sys_init_module)
+SYSCALL(sys_delete_module,compat_sys_delete_module)
+NI_SYSCALL						/* 130: old get_kernel_syms */
+SYSCALL(sys_quotactl,compat_sys_quotactl)
+SYSCALL(sys_getpgid,compat_sys_getpgid)
+SYSCALL(sys_fchdir,compat_sys_fchdir)
+SYSCALL(sys_bdflush,compat_sys_bdflush)
+SYSCALL(sys_sysfs,compat_sys_sysfs)			/* 135 */
+SYSCALL(sys_s390_personality,compat_sys_s390_personality)
+NI_SYSCALL						/* for afs_syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_setfsuid16)	/* old setfsuid16 syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_setfsgid16)	/* old setfsgid16 syscall */
+SYSCALL(sys_llseek,compat_sys_llseek)			/* 140 */
+SYSCALL(sys_getdents,compat_sys_getdents)
+SYSCALL(sys_select,compat_sys_select)
+SYSCALL(sys_flock,compat_sys_flock)
+SYSCALL(sys_msync,compat_sys_msync)
+SYSCALL(sys_readv,compat_sys_readv)			/* 145 */
+SYSCALL(sys_writev,compat_sys_writev)
+SYSCALL(sys_getsid,compat_sys_getsid)
+SYSCALL(sys_fdatasync,compat_sys_fdatasync)
+SYSCALL(sys_sysctl,compat_sys_sysctl)
+SYSCALL(sys_mlock,compat_sys_mlock)			/* 150 */
+SYSCALL(sys_munlock,compat_sys_munlock)
+SYSCALL(sys_mlockall,compat_sys_mlockall)
+SYSCALL(sys_munlockall,sys_munlockall)
+SYSCALL(sys_sched_setparam,compat_sys_sched_setparam)
+SYSCALL(sys_sched_getparam,compat_sys_sched_getparam)	/* 155 */
+SYSCALL(sys_sched_setscheduler,compat_sys_sched_setscheduler)
+SYSCALL(sys_sched_getscheduler,compat_sys_sched_getscheduler)
+SYSCALL(sys_sched_yield,sys_sched_yield)
+SYSCALL(sys_sched_get_priority_max,compat_sys_sched_get_priority_max)
+SYSCALL(sys_sched_get_priority_min,compat_sys_sched_get_priority_min)	/* 160 */
+SYSCALL(sys_sched_rr_get_interval,compat_sys_sched_rr_get_interval)
+SYSCALL(sys_nanosleep,compat_sys_nanosleep)
+SYSCALL(sys_mremap,compat_sys_mremap)
+SYSCALL(sys_ni_syscall,compat_sys_s390_setresuid16)	/* old setresuid16 syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_getresuid16)	/* 165 old getresuid16 syscall */
+NI_SYSCALL						/* for vm86 */
+NI_SYSCALL						/* old sys_query_module */
+SYSCALL(sys_poll,compat_sys_poll)
+NI_SYSCALL						/* old nfsservctl */
+SYSCALL(sys_ni_syscall,compat_sys_s390_setresgid16)	/* 170 old setresgid16 syscall */
+SYSCALL(sys_ni_syscall,compat_sys_s390_getresgid16)	/* old getresgid16 syscall */
+SYSCALL(sys_prctl,compat_sys_prctl)
+SYSCALL(sys_rt_sigreturn,compat_sys_rt_sigreturn)
+SYSCALL(sys_rt_sigaction,compat_sys_rt_sigaction)
+SYSCALL(sys_rt_sigprocmask,compat_sys_rt_sigprocmask)	/* 175 */
+SYSCALL(sys_rt_sigpending,compat_sys_rt_sigpending)
+SYSCALL(sys_rt_sigtimedwait,compat_sys_rt_sigtimedwait)
+SYSCALL(sys_rt_sigqueueinfo,compat_sys_rt_sigqueueinfo)
+SYSCALL(sys_rt_sigsuspend,compat_sys_rt_sigsuspend)
+SYSCALL(sys_pread64,compat_sys_s390_pread64)		/* 180 */
+SYSCALL(sys_pwrite64,compat_sys_s390_pwrite64)
+SYSCALL(sys_ni_syscall,compat_sys_s390_chown16)		/* old chown16 syscall */
+SYSCALL(sys_getcwd,compat_sys_getcwd)
+SYSCALL(sys_capget,compat_sys_capget)
+SYSCALL(sys_capset,compat_sys_capset)			/* 185 */
+SYSCALL(sys_sigaltstack,compat_sys_sigaltstack)
+SYSCALL(sys_sendfile64,compat_sys_sendfile)
+NI_SYSCALL						/* streams1 */
+NI_SYSCALL						/* streams2 */
+SYSCALL(sys_vfork,sys_vfork)				/* 190 */
+SYSCALL(sys_getrlimit,compat_sys_getrlimit)
+SYSCALL(sys_mmap2,compat_sys_s390_mmap2)
+SYSCALL(sys_ni_syscall,compat_sys_s390_truncate64)
+SYSCALL(sys_ni_syscall,compat_sys_s390_ftruncate64)
+SYSCALL(sys_ni_syscall,compat_sys_s390_stat64)		/* 195 */
+SYSCALL(sys_ni_syscall,compat_sys_s390_lstat64)
+SYSCALL(sys_ni_syscall,compat_sys_s390_fstat64)
+SYSCALL(sys_lchown,compat_sys_lchown)
+SYSCALL(sys_getuid,sys_getuid)
+SYSCALL(sys_getgid,sys_getgid)				/* 200 */
+SYSCALL(sys_geteuid,sys_geteuid)
+SYSCALL(sys_getegid,sys_getegid)
+SYSCALL(sys_setreuid,compat_sys_setreuid)
+SYSCALL(sys_setregid,compat_sys_setregid)
+SYSCALL(sys_getgroups,compat_sys_getgroups)		/* 205 */
+SYSCALL(sys_setgroups,compat_sys_setgroups)
+SYSCALL(sys_fchown,compat_sys_fchown)
+SYSCALL(sys_setresuid,compat_sys_setresuid)
+SYSCALL(sys_getresuid,compat_sys_getresuid)
+SYSCALL(sys_setresgid,compat_sys_setresgid)		/* 210 */
+SYSCALL(sys_getresgid,compat_sys_getresgid)
+SYSCALL(sys_chown,compat_sys_chown)
+SYSCALL(sys_setuid,compat_sys_setuid)
+SYSCALL(sys_setgid,compat_sys_setgid)
+SYSCALL(sys_setfsuid,compat_sys_setfsuid)		/* 215 */
+SYSCALL(sys_setfsgid,compat_sys_setfsgid)
+SYSCALL(sys_pivot_root,compat_sys_pivot_root)
+SYSCALL(sys_mincore,compat_sys_mincore)
+SYSCALL(sys_madvise,compat_sys_madvise)
+SYSCALL(sys_getdents64,compat_sys_getdents64)		/* 220 */
+SYSCALL(sys_ni_syscall,compat_sys_fcntl64)
+SYSCALL(sys_readahead,compat_sys_s390_readahead)
+SYSCALL(sys_ni_syscall,compat_sys_sendfile64)
+SYSCALL(sys_setxattr,compat_sys_setxattr)
+SYSCALL(sys_lsetxattr,compat_sys_lsetxattr)		/* 225 */
+SYSCALL(sys_fsetxattr,compat_sys_fsetxattr)
+SYSCALL(sys_getxattr,compat_sys_getxattr)
+SYSCALL(sys_lgetxattr,compat_sys_lgetxattr)
+SYSCALL(sys_fgetxattr,compat_sys_fgetxattr)
+SYSCALL(sys_listxattr,compat_sys_listxattr)		/* 230 */
+SYSCALL(sys_llistxattr,compat_sys_llistxattr)
+SYSCALL(sys_flistxattr,compat_sys_flistxattr)
+SYSCALL(sys_removexattr,compat_sys_removexattr)
+SYSCALL(sys_lremovexattr,compat_sys_lremovexattr)
+SYSCALL(sys_fremovexattr,compat_sys_fremovexattr)	/* 235 */
+SYSCALL(sys_gettid,sys_gettid)
+SYSCALL(sys_tkill,compat_sys_tkill)
+SYSCALL(sys_futex,compat_sys_futex)
+SYSCALL(sys_sched_setaffinity,compat_sys_sched_setaffinity)
+SYSCALL(sys_sched_getaffinity,compat_sys_sched_getaffinity)	/* 240 */
+SYSCALL(sys_tgkill,compat_sys_tgkill)
+NI_SYSCALL						/* reserved for TUX */
+SYSCALL(sys_io_setup,compat_sys_io_setup)
+SYSCALL(sys_io_destroy,compat_sys_io_destroy)
+SYSCALL(sys_io_getevents,compat_sys_io_getevents)	/* 245 */
+SYSCALL(sys_io_submit,compat_sys_io_submit)
+SYSCALL(sys_io_cancel,compat_sys_io_cancel)
+SYSCALL(sys_exit_group,compat_sys_exit_group)
+SYSCALL(sys_epoll_create,compat_sys_epoll_create)
+SYSCALL(sys_epoll_ctl,compat_sys_epoll_ctl)		/* 250 */
+SYSCALL(sys_epoll_wait,compat_sys_epoll_wait)
+SYSCALL(sys_set_tid_address,compat_sys_set_tid_address)
+SYSCALL(sys_fadvise64_64,compat_sys_s390_fadvise64)
+SYSCALL(sys_timer_create,compat_sys_timer_create)
+SYSCALL(sys_timer_settime,compat_sys_timer_settime)	/* 255 */
+SYSCALL(sys_timer_gettime,compat_sys_timer_gettime)
+SYSCALL(sys_timer_getoverrun,compat_sys_timer_getoverrun)
+SYSCALL(sys_timer_delete,compat_sys_timer_delete)
+SYSCALL(sys_clock_settime,compat_sys_clock_settime)
+SYSCALL(sys_clock_gettime,compat_sys_clock_gettime)	/* 260 */
+SYSCALL(sys_clock_getres,compat_sys_clock_getres)
+SYSCALL(sys_clock_nanosleep,compat_sys_clock_nanosleep)
+NI_SYSCALL						/* reserved for vserver */
+SYSCALL(sys_ni_syscall,compat_sys_s390_fadvise64_64)
+SYSCALL(sys_statfs64,compat_sys_statfs64)
+SYSCALL(sys_fstatfs64,compat_sys_fstatfs64)
+SYSCALL(sys_remap_file_pages,compat_sys_remap_file_pages)
+NI_SYSCALL						/* 268 sys_mbind */
+NI_SYSCALL						/* 269 sys_get_mempolicy */
+NI_SYSCALL						/* 270 sys_set_mempolicy */
+SYSCALL(sys_mq_open,compat_sys_mq_open)
+SYSCALL(sys_mq_unlink,compat_sys_mq_unlink)
+SYSCALL(sys_mq_timedsend,compat_sys_mq_timedsend)
+SYSCALL(sys_mq_timedreceive,compat_sys_mq_timedreceive)
+SYSCALL(sys_mq_notify,compat_sys_mq_notify)		/* 275 */
+SYSCALL(sys_mq_getsetattr,compat_sys_mq_getsetattr)
+SYSCALL(sys_kexec_load,compat_sys_kexec_load)
+SYSCALL(sys_add_key,compat_sys_add_key)
+SYSCALL(sys_request_key,compat_sys_request_key)
+SYSCALL(sys_keyctl,compat_sys_keyctl)			/* 280 */
+SYSCALL(sys_waitid,compat_sys_waitid)
+SYSCALL(sys_ioprio_set,compat_sys_ioprio_set)
+SYSCALL(sys_ioprio_get,compat_sys_ioprio_get)
+SYSCALL(sys_inotify_init,sys_inotify_init)
+SYSCALL(sys_inotify_add_watch,compat_sys_inotify_add_watch)	/* 285 */
+SYSCALL(sys_inotify_rm_watch,compat_sys_inotify_rm_watch)
+NI_SYSCALL						/* 287 sys_migrate_pages */
+SYSCALL(sys_openat,compat_sys_openat)
+SYSCALL(sys_mkdirat,compat_sys_mkdirat)
+SYSCALL(sys_mknodat,compat_sys_mknodat)			/* 290 */
+SYSCALL(sys_fchownat,compat_sys_fchownat)
+SYSCALL(sys_futimesat,compat_sys_futimesat)
+SYSCALL(sys_newfstatat,compat_sys_s390_fstatat64)
+SYSCALL(sys_unlinkat,compat_sys_unlinkat)
+SYSCALL(sys_renameat,compat_sys_renameat)		/* 295 */
+SYSCALL(sys_linkat,compat_sys_linkat)
+SYSCALL(sys_symlinkat,compat_sys_symlinkat)
+SYSCALL(sys_readlinkat,compat_sys_readlinkat)
+SYSCALL(sys_fchmodat,compat_sys_fchmodat)
+SYSCALL(sys_faccessat,compat_sys_faccessat)		/* 300 */
+SYSCALL(sys_pselect6,compat_sys_pselect6)
+SYSCALL(sys_ppoll,compat_sys_ppoll)
+SYSCALL(sys_unshare,compat_sys_unshare)
+SYSCALL(sys_set_robust_list,compat_sys_set_robust_list)
+SYSCALL(sys_get_robust_list,compat_sys_get_robust_list)
+SYSCALL(sys_splice,compat_sys_splice)
+SYSCALL(sys_sync_file_range,compat_sys_s390_sync_file_range)
+SYSCALL(sys_tee,compat_sys_tee)
+SYSCALL(sys_vmsplice,compat_sys_vmsplice)
+NI_SYSCALL						/* 310 sys_move_pages */
+SYSCALL(sys_getcpu,compat_sys_getcpu)
+SYSCALL(sys_epoll_pwait,compat_sys_epoll_pwait)
+SYSCALL(sys_utimes,compat_sys_utimes)
+SYSCALL(sys_fallocate,compat_sys_s390_fallocate)
+SYSCALL(sys_utimensat,compat_sys_utimensat)		/* 315 */
+SYSCALL(sys_signalfd,compat_sys_signalfd)
 NI_SYSCALL						/* 317 old sys_timer_fd */
-SYSCALL(sys_eventfd,sys_eventfd,compat_sys_eventfd)
-SYSCALL(sys_timerfd_create,sys_timerfd_create,compat_sys_timerfd_create)
-SYSCALL(sys_timerfd_settime,sys_timerfd_settime,compat_sys_timerfd_settime) /* 320 */
-SYSCALL(sys_timerfd_gettime,sys_timerfd_gettime,compat_sys_timerfd_gettime)
-SYSCALL(sys_signalfd4,sys_signalfd4,compat_sys_signalfd4)
-SYSCALL(sys_eventfd2,sys_eventfd2,compat_sys_eventfd2)
-SYSCALL(sys_inotify_init1,sys_inotify_init1,compat_sys_inotify_init1)
-SYSCALL(sys_pipe2,sys_pipe2,compat_sys_pipe2) /* 325 */
-SYSCALL(sys_dup3,sys_dup3,compat_sys_dup3)
-SYSCALL(sys_epoll_create1,sys_epoll_create1,compat_sys_epoll_create1)
-SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv)
-SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev)
-SYSCALL(sys_rt_tgsigqueueinfo,sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo) /* 330 */
-SYSCALL(sys_perf_event_open,sys_perf_event_open,compat_sys_perf_event_open)
-SYSCALL(sys_fanotify_init,sys_fanotify_init,compat_sys_fanotify_init)
-SYSCALL(sys_fanotify_mark,sys_fanotify_mark,compat_sys_fanotify_mark)
-SYSCALL(sys_prlimit64,sys_prlimit64,compat_sys_prlimit64)
-SYSCALL(sys_name_to_handle_at,sys_name_to_handle_at,compat_sys_name_to_handle_at) /* 335 */
-SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at)
-SYSCALL(sys_clock_adjtime,sys_clock_adjtime,compat_sys_clock_adjtime)
-SYSCALL(sys_syncfs,sys_syncfs,compat_sys_syncfs)
-SYSCALL(sys_setns,sys_setns,compat_sys_setns)
-SYSCALL(sys_process_vm_readv,sys_process_vm_readv,compat_sys_process_vm_readv) /* 340 */
-SYSCALL(sys_process_vm_writev,sys_process_vm_writev,compat_sys_process_vm_writev)
-SYSCALL(sys_ni_syscall,sys_s390_runtime_instr,compat_sys_s390_runtime_instr)
-SYSCALL(sys_kcmp,sys_kcmp,compat_sys_kcmp)
-SYSCALL(sys_finit_module,sys_finit_module,compat_sys_finit_module)
-SYSCALL(sys_sched_setattr,sys_sched_setattr,compat_sys_sched_setattr) /* 345 */
-SYSCALL(sys_sched_getattr,sys_sched_getattr,compat_sys_sched_getattr)
-SYSCALL(sys_renameat2,sys_renameat2,compat_sys_renameat2)
-SYSCALL(sys_seccomp,sys_seccomp,compat_sys_seccomp)
-SYSCALL(sys_getrandom,sys_getrandom,compat_sys_getrandom)
-SYSCALL(sys_memfd_create,sys_memfd_create,compat_sys_memfd_create) /* 350 */
-SYSCALL(sys_bpf,sys_bpf,compat_sys_bpf)
-SYSCALL(sys_ni_syscall,sys_s390_pci_mmio_write,compat_sys_s390_pci_mmio_write)
-SYSCALL(sys_ni_syscall,sys_s390_pci_mmio_read,compat_sys_s390_pci_mmio_read)
-SYSCALL(sys_execveat,sys_execveat,compat_sys_execveat)
+SYSCALL(sys_eventfd,compat_sys_eventfd)
+SYSCALL(sys_timerfd_create,compat_sys_timerfd_create)
+SYSCALL(sys_timerfd_settime,compat_sys_timerfd_settime) /* 320 */
+SYSCALL(sys_timerfd_gettime,compat_sys_timerfd_gettime)
+SYSCALL(sys_signalfd4,compat_sys_signalfd4)
+SYSCALL(sys_eventfd2,compat_sys_eventfd2)
+SYSCALL(sys_inotify_init1,compat_sys_inotify_init1)
+SYSCALL(sys_pipe2,compat_sys_pipe2)			/* 325 */
+SYSCALL(sys_dup3,compat_sys_dup3)
+SYSCALL(sys_epoll_create1,compat_sys_epoll_create1)
+SYSCALL(sys_preadv,compat_sys_preadv)
+SYSCALL(sys_pwritev,compat_sys_pwritev)
+SYSCALL(sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo) /* 330 */
+SYSCALL(sys_perf_event_open,compat_sys_perf_event_open)
+SYSCALL(sys_fanotify_init,compat_sys_fanotify_init)
+SYSCALL(sys_fanotify_mark,compat_sys_fanotify_mark)
+SYSCALL(sys_prlimit64,compat_sys_prlimit64)
+SYSCALL(sys_name_to_handle_at,compat_sys_name_to_handle_at) /* 335 */
+SYSCALL(sys_open_by_handle_at,compat_sys_open_by_handle_at)
+SYSCALL(sys_clock_adjtime,compat_sys_clock_adjtime)
+SYSCALL(sys_syncfs,compat_sys_syncfs)
+SYSCALL(sys_setns,compat_sys_setns)
+SYSCALL(sys_process_vm_readv,compat_sys_process_vm_readv) /* 340 */
+SYSCALL(sys_process_vm_writev,compat_sys_process_vm_writev)
+SYSCALL(sys_s390_runtime_instr,compat_sys_s390_runtime_instr)
+SYSCALL(sys_kcmp,compat_sys_kcmp)
+SYSCALL(sys_finit_module,compat_sys_finit_module)
+SYSCALL(sys_sched_setattr,compat_sys_sched_setattr)	/* 345 */
+SYSCALL(sys_sched_getattr,compat_sys_sched_getattr)
+SYSCALL(sys_renameat2,compat_sys_renameat2)
+SYSCALL(sys_seccomp,compat_sys_seccomp)
+SYSCALL(sys_getrandom,compat_sys_getrandom)
+SYSCALL(sys_memfd_create,compat_sys_memfd_create)	/* 350 */
+SYSCALL(sys_bpf,compat_sys_bpf)
+SYSCALL(sys_s390_pci_mmio_write,compat_sys_s390_pci_mmio_write)
+SYSCALL(sys_s390_pci_mmio_read,compat_sys_s390_pci_mmio_read)
+SYSCALL(sys_execveat,compat_sys_execveat)

arch/s390/kernel/topology.c

@@ -421,7 +421,7 @@ int topology_cpu_init(struct cpu *cpu)
 	return sysfs_create_group(&cpu->dev.kobj, &topology_cpu_attr_group);
 }
 
-const struct cpumask *cpu_thread_mask(int cpu)
+static const struct cpumask *cpu_thread_mask(int cpu)
 {
 	return &per_cpu(cpu_topology, cpu).thread_mask;
 }

arch/s390/kernel/traps.c

@@ -26,7 +26,6 @@ int show_unhandled_signals = 1;
 
 static inline void __user *get_trap_ip(struct pt_regs *regs)
 {
-#ifdef CONFIG_64BIT
 	unsigned long address;
 
 	if (regs->int_code & 0x200)
@@ -35,10 +34,6 @@ static inline void __user *get_trap_ip(struct pt_regs *regs)
 		address = regs->psw.addr;
 	return (void __user *)
 		((address - (regs->int_code >> 16)) & PSW_ADDR_INSN);
-#else
-	return (void __user *)
-		((regs->psw.addr - (regs->int_code >> 16)) & PSW_ADDR_INSN);
-#endif
 }
 
 static inline void report_user_fault(struct pt_regs *regs, int signr)
@@ -153,11 +148,8 @@ DO_ERROR_INFO(privileged_op, SIGILL, ILL_PRVOPC,
 	      "privileged operation")
 DO_ERROR_INFO(special_op_exception, SIGILL, ILL_ILLOPN,
 	      "special operation exception")
-
-#ifdef CONFIG_64BIT
 DO_ERROR_INFO(transaction_exception, SIGILL, ILL_ILLOPN,
 	      "transaction constraint exception")
-#endif
 
 static inline void do_fp_trap(struct pt_regs *regs, int fpc)
 {
@@ -182,7 +174,7 @@ static inline void do_fp_trap(struct pt_regs *regs, int fpc)
 void translation_exception(struct pt_regs *regs)
 {
 	/* May never happen. */
-	die(regs, "Translation exception");
+	panic("Translation exception");
 }
 
 void illegal_op(struct pt_regs *regs)
@@ -210,29 +202,6 @@ void illegal_op(struct pt_regs *regs)
 #ifdef CONFIG_UPROBES
 		} else if (*((__u16 *) opcode) == UPROBE_SWBP_INSN) {
 			is_uprobe_insn = 1;
-#endif
-#ifdef CONFIG_MATHEMU
-		} else if (opcode[0] == 0xb3) {
-			if (get_user(*((__u16 *) (opcode+2)), location+1))
-				return;
-			signal = math_emu_b3(opcode, regs);
-                } else if (opcode[0] == 0xed) {
-			if (get_user(*((__u32 *) (opcode+2)),
-				     (__u32 __user *)(location+1)))
-				return;
-			signal = math_emu_ed(opcode, regs);
-		} else if (*((__u16 *) opcode) == 0xb299) {
-			if (get_user(*((__u16 *) (opcode+2)), location+1))
-				return;
-			signal = math_emu_srnm(opcode, regs);
-		} else if (*((__u16 *) opcode) == 0xb29c) {
-			if (get_user(*((__u16 *) (opcode+2)), location+1))
-				return;
-			signal = math_emu_stfpc(opcode, regs);
-		} else if (*((__u16 *) opcode) == 0xb29d) {
-			if (get_user(*((__u16 *) (opcode+2)), location+1))
-				return;
-			signal = math_emu_lfpc(opcode, regs);
 #endif
 		} else
 			signal = SIGILL;
@@ -247,71 +216,14 @@ void illegal_op(struct pt_regs *regs)
 			       3, SIGTRAP) != NOTIFY_STOP)
 			signal = SIGILL;
 	}
-
-#ifdef CONFIG_MATHEMU
-        if (signal == SIGFPE)
-		do_fp_trap(regs, current->thread.fp_regs.fpc);
-	else if (signal == SIGSEGV)
-		do_trap(regs, signal, SEGV_MAPERR, "user address fault");
-	else
-#endif
 	if (signal)
 		do_trap(regs, signal, ILL_ILLOPC, "illegal operation");
 }
 NOKPROBE_SYMBOL(illegal_op);
 
-#ifdef CONFIG_MATHEMU
-void specification_exception(struct pt_regs *regs)
-{
-        __u8 opcode[6];
-	__u16 __user *location = NULL;
-	int signal = 0;
-
-	location = (__u16 __user *) get_trap_ip(regs);
-
-	if (user_mode(regs)) {
-		get_user(*((__u16 *) opcode), location);
-		switch (opcode[0]) {
-		case 0x28: /* LDR Rx,Ry   */
-			signal = math_emu_ldr(opcode);
-			break;
-		case 0x38: /* LER Rx,Ry   */
-			signal = math_emu_ler(opcode);
-			break;
-		case 0x60: /* STD R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_std(opcode, regs);
-			break;
-		case 0x68: /* LD R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_ld(opcode, regs);
-			break;
-		case 0x70: /* STE R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_ste(opcode, regs);
-			break;
-		case 0x78: /* LE R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_le(opcode, regs);
-			break;
-		default:
-			signal = SIGILL;
-			break;
-                }
-        } else
-		signal = SIGILL;
-
-        if (signal == SIGFPE)
-		do_fp_trap(regs, current->thread.fp_regs.fpc);
-	else if (signal)
-		do_trap(regs, signal, ILL_ILLOPN, "specification exception");
-}
-#else
 DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN,
 	      "specification exception");
-#endif
 
-#ifdef CONFIG_64BIT
 int alloc_vector_registers(struct task_struct *tsk)
 {
 	__vector128 *vxrs;
@@ -377,7 +289,6 @@ static int __init disable_vector_extension(char *str)
 	return 1;
 }
 __setup("novx", disable_vector_extension);
-#endif
 
 void data_exception(struct pt_regs *regs)
 {
@@ -386,65 +297,7 @@ void data_exception(struct pt_regs *regs)
 
 	location = get_trap_ip(regs);
 
-	if (MACHINE_HAS_IEEE)
-		asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
-
-#ifdef CONFIG_MATHEMU
-	else if (user_mode(regs)) {
-        	__u8 opcode[6];
-		get_user(*((__u16 *) opcode), location);
-		switch (opcode[0]) {
-		case 0x28: /* LDR Rx,Ry   */
-			signal = math_emu_ldr(opcode);
-			break;
-		case 0x38: /* LER Rx,Ry   */
-			signal = math_emu_ler(opcode);
-			break;
-		case 0x60: /* STD R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_std(opcode, regs);
-			break;
-		case 0x68: /* LD R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_ld(opcode, regs);
-			break;
-		case 0x70: /* STE R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_ste(opcode, regs);
-			break;
-		case 0x78: /* LE R,D(X,B) */
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_le(opcode, regs);
-			break;
-		case 0xb3:
-			get_user(*((__u16 *) (opcode+2)), location+1);
-			signal = math_emu_b3(opcode, regs);
-			break;
-                case 0xed:
-			get_user(*((__u32 *) (opcode+2)),
-				 (__u32 __user *)(location+1));
-			signal = math_emu_ed(opcode, regs);
-			break;
-	        case 0xb2:
-			if (opcode[1] == 0x99) {
-				get_user(*((__u16 *) (opcode+2)), location+1);
-				signal = math_emu_srnm(opcode, regs);
-			} else if (opcode[1] == 0x9c) {
-				get_user(*((__u16 *) (opcode+2)), location+1);
-				signal = math_emu_stfpc(opcode, regs);
-			} else if (opcode[1] == 0x9d) {
-				get_user(*((__u16 *) (opcode+2)), location+1);
-				signal = math_emu_lfpc(opcode, regs);
-			} else
-				signal = SIGILL;
-			break;
-		default:
-			signal = SIGILL;
-			break;
-                }
-        }
-#endif 
-#ifdef CONFIG_64BIT
+	asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
 	/* Check for vector register enablement */
 	if (MACHINE_HAS_VX && !current->thread.vxrs &&
 	    (current->thread.fp_regs.fpc & FPC_DXC_MASK) == 0xfe00) {
@@ -454,13 +307,11 @@ void data_exception(struct pt_regs *regs)
 		clear_pt_regs_flag(regs, PIF_PER_TRAP);
 		return;
 	}
-#endif
-
 	if (current->thread.fp_regs.fpc & FPC_DXC_MASK)
 		signal = SIGFPE;
 	else
 		signal = SIGILL;
-        if (signal == SIGFPE)
+	if (signal == SIGFPE)
 		do_fp_trap(regs, current->thread.fp_regs.fpc);
 	else if (signal)
 		do_trap(regs, signal, ILL_ILLOPN, "data exception");

arch/s390/kernel/uprobes.c

@@ -188,7 +188,9 @@ static void adjust_psw_addr(psw_t *psw, unsigned long len)
 	else if (put_user(*(input), __ptr))		\
 		__rc = EMU_ADDRESSING;			\
 	if (__rc == 0)					\
-		sim_stor_event(regs, __ptr, mask + 1);	\
+		sim_stor_event(regs,			\
+			       (void __force *)__ptr,	\
+			       mask + 1);		\
 	__rc;						\
 })
 

arch/s390/kernel/vdso.c

@@ -32,19 +32,17 @@
 #include <asm/vdso.h>
 #include <asm/facility.h>
 
-#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT)
+#ifdef CONFIG_COMPAT
 extern char vdso32_start, vdso32_end;
 static void *vdso32_kbase = &vdso32_start;
 static unsigned int vdso32_pages;
 static struct page **vdso32_pagelist;
 #endif
 
-#ifdef CONFIG_64BIT
 extern char vdso64_start, vdso64_end;
 static void *vdso64_kbase = &vdso64_start;
 static unsigned int vdso64_pages;
 static struct page **vdso64_pagelist;
-#endif /* CONFIG_64BIT */
 
 /*
  * Should the kernel map a VDSO page into processes and pass its
@@ -87,7 +85,6 @@ static void vdso_init_data(struct vdso_data *vd)
 	vd->ectg_available = test_facility(31);
 }
 
-#ifdef CONFIG_64BIT
 /*
  * Allocate/free per cpu vdso data.
  */
@@ -169,7 +166,6 @@ static void vdso_init_cr5(void)
 	cr5 = offsetof(struct _lowcore, paste);
 	__ctl_load(cr5, 5, 5);
 }
-#endif /* CONFIG_64BIT */
 
 /*
  * This is called from binfmt_elf, we create the special vma for the
@@ -191,7 +187,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	if (!uses_interp)
 		return 0;
 
-#ifdef CONFIG_64BIT
 	vdso_pagelist = vdso64_pagelist;
 	vdso_pages = vdso64_pages;
 #ifdef CONFIG_COMPAT
@@ -200,11 +195,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 		vdso_pages = vdso32_pages;
 	}
 #endif
-#else
-	vdso_pagelist = vdso32_pagelist;
-	vdso_pages = vdso32_pages;
-#endif
-
 	/*
 	 * vDSO has a problem and was disabled, just don't "enable" it for
 	 * the process
@@ -268,7 +258,7 @@ static int __init vdso_init(void)
 	if (!vdso_enabled)
 		return 0;
 	vdso_init_data(vdso_data);
-#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT)
+#ifdef CONFIG_COMPAT
 	/* Calculate the size of the 32 bit vDSO */
 	vdso32_pages = ((&vdso32_end - &vdso32_start
 			 + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
@@ -287,7 +277,6 @@ static int __init vdso_init(void)
 	vdso32_pagelist[vdso32_pages] = NULL;
 #endif
 
-#ifdef CONFIG_64BIT
 	/* Calculate the size of the 64 bit vDSO */
 	vdso64_pages = ((&vdso64_end - &vdso64_start
 			 + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
@@ -307,7 +296,6 @@ static int __init vdso_init(void)
 	if (vdso_alloc_per_cpu(&S390_lowcore))
 		BUG();
 	vdso_init_cr5();
-#endif /* CONFIG_64BIT */
 
 	get_page(virt_to_page(vdso_data));
 

arch/s390/kernel/vmlinux.lds.S

@@ -6,17 +6,10 @@
 #include <asm/page.h>
 #include <asm-generic/vmlinux.lds.h>
 
-#ifndef CONFIG_64BIT
-OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
-OUTPUT_ARCH(s390:31-bit)
-ENTRY(startup)
-jiffies = jiffies_64 + 4;
-#else
 OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
 OUTPUT_ARCH(s390:64-bit)
 ENTRY(startup)
 jiffies = jiffies_64;
-#endif
 
 PHDRS {
 	text PT_LOAD FLAGS(5);	/* R_E */

arch/s390/lib/Makefile

@@ -3,8 +3,7 @@
 #
 
 lib-y += delay.o string.o uaccess.o find.o
-obj-$(CONFIG_32BIT) += div64.o qrnnd.o ucmpdi2.o mem32.o
-obj-$(CONFIG_64BIT) += mem64.o
+obj-y += mem.o
 lib-$(CONFIG_SMP) += spinlock.o
 lib-$(CONFIG_KPROBES) += probes.o
 lib-$(CONFIG_UPROBES) += probes.o

arch/s390/lib/div64.c

@@ -1,147 +0,0 @@
-/*
- *  __div64_32 implementation for 31 bit.
- *
- *    Copyright IBM Corp. 2006
- *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-#include <linux/types.h>
-#include <linux/module.h>
-
-#ifdef CONFIG_MARCH_G5
-
-/*
- * Function to divide an unsigned 64 bit integer by an unsigned
- * 31 bit integer using signed 64/32 bit division.
- */
-static uint32_t __div64_31(uint64_t *n, uint32_t base)
-{
-	register uint32_t reg2 asm("2");
-	register uint32_t reg3 asm("3");
-	uint32_t *words = (uint32_t *) n;
-	uint32_t tmp;
-
-	/* Special case base==1, remainder = 0, quotient = n */
-	if (base == 1)
-		return 0;
-	/*
-	 * Special case base==0 will cause a fixed point divide exception
-	 * on the dr instruction and may not happen anyway. For the
-	 * following calculation we can assume base > 1. The first
-	 * signed 64 / 32 bit division with an upper half of 0 will
-	 * give the correct upper half of the 64 bit quotient.
-	 */
-	reg2 = 0UL;
-	reg3 = words[0];
-	asm volatile(
-		"	dr	%0,%2\n"
-		: "+d" (reg2), "+d" (reg3) : "d" (base) : "cc" );
-	words[0] = reg3;
-	reg3 = words[1];
-	/*
-	 * To get the lower half of the 64 bit quotient and the 32 bit
-	 * remainder we have to use a little trick. Since we only have
-	 * a signed division the quotient can get too big. To avoid this
-	 * the 64 bit dividend is halved, then the signed division will
-	 * work. Afterwards the quotient and the remainder are doubled.
-	 * If the last bit of the dividend has been one the remainder
-	 * is increased by one then checked against the base. If the
-	 * remainder has overflown subtract base and increase the
-	 * quotient. Simple, no ?
-	 */
-	asm volatile(
-		"	nr	%2,%1\n"
-		"	srdl	%0,1\n"
-		"	dr	%0,%3\n"
-		"	alr	%0,%0\n"
-		"	alr	%1,%1\n"
-		"	alr	%0,%2\n"
-		"	clr	%0,%3\n"
-		"	jl	0f\n"
-		"	slr	%0,%3\n"
-		"	ahi	%1,1\n"
-		"0:\n"
-		: "+d" (reg2), "+d" (reg3), "=d" (tmp)
-		: "d" (base), "2" (1UL) : "cc" );
-	words[1] = reg3;
-	return reg2;
-}
-
-/*
- * Function to divide an unsigned 64 bit integer by an unsigned
- * 32 bit integer using the unsigned 64/31 bit division.
- */
-uint32_t __div64_32(uint64_t *n, uint32_t base)
-{
-	uint32_t r;
-
-	/*
-	 * If the most significant bit of base is set, divide n by
-	 * (base/2). That allows to use 64/31 bit division and gives a
-	 * good approximation of the result: n = (base/2)*q + r. The
-	 * result needs to be corrected with two simple transformations.
-	 * If base is already < 2^31-1 __div64_31 can be used directly.
-	 */
-	r = __div64_31(n, ((signed) base < 0) ? (base/2) : base);
-	if ((signed) base < 0) {
-		uint64_t q = *n;
-		/*
-		 * First transformation:
-		 * n = (base/2)*q + r
-		 *   = ((base/2)*2)*(q/2) + ((q&1) ? (base/2) : 0) + r
-		 * Since r < (base/2), r + (base/2) < base.
-		 * With q1 = (q/2) and r1 = r + ((q&1) ? (base/2) : 0)
-		 * n = ((base/2)*2)*q1 + r1 with r1 < base.
-		 */
-		if (q & 1)
-			r += base/2;
-		q >>= 1;
-		/*
-		 * Second transformation. ((base/2)*2) could have lost the
-		 * last bit.
-		 * n = ((base/2)*2)*q1 + r1
-		 *   = base*q1 - ((base&1) ? q1 : 0) + r1
-		 */
-		if (base & 1) {
-			int64_t rx = r - q;
-			/*
-			 * base is >= 2^31. The worst case for the while
-			 * loop is n=2^64-1 base=2^31+1. That gives a
-			 * maximum for q=(2^64-1)/2^31 = 0x1ffffffff. Since
-			 * base >= 2^31 the loop is finished after a maximum
-			 * of three iterations.
-			 */
-			while (rx < 0) {
-				rx += base;
-				q--;
-			}
-			r = rx;
-		}
-		*n = q;
-	}
-	return r;
-}
-
-#else /* MARCH_G5 */
-
-uint32_t __div64_32(uint64_t *n, uint32_t base)
-{
-	register uint32_t reg2 asm("2");
-	register uint32_t reg3 asm("3");
-	uint32_t *words = (uint32_t *) n;
-
-	reg2 = 0UL;
-	reg3 = words[0];
-	asm volatile(
-		"	dlr	%0,%2\n"
-		: "+d" (reg2), "+d" (reg3) : "d" (base) : "cc" );
-	words[0] = reg3;
-	reg3 = words[1];
-	asm volatile(
-		"	dlr	%0,%2\n"
-		: "+d" (reg2), "+d" (reg3) : "d" (base) : "cc" );
-	words[1] = reg3;
-	return reg2;
-}
-
-#endif /* MARCH_G5 */

arch/s390/lib/mem32.S

@@ -1,92 +0,0 @@
-/*
- * String handling functions.
- *
- * Copyright IBM Corp. 2012
- */
-
-#include <linux/linkage.h>
-
-/*
- * memset implementation
- *
- * This code corresponds to the C construct below. We do distinguish
- * between clearing (c == 0) and setting a memory array (c != 0) simply
- * because nearly all memset invocations in the kernel clear memory and
- * the xc instruction is preferred in such cases.
- *
- * void *memset(void *s, int c, size_t n)
- * {
- *	if (likely(c == 0))
- *		return __builtin_memset(s, 0, n);
- *	return __builtin_memset(s, c, n);
- * }
- */
-ENTRY(memset)
-	basr	%r5,%r0
-.Lmemset_base:
-	ltr	%r4,%r4
-	bzr	%r14
-	ltr	%r3,%r3
-	jnz	.Lmemset_fill
-	ahi	%r4,-1
-	lr	%r3,%r4
-	srl	%r3,8
-	ltr	%r3,%r3
-	lr	%r1,%r2
-	je	.Lmemset_clear_rest
-.Lmemset_clear_loop:
-	xc	0(256,%r1),0(%r1)
-	la	%r1,256(%r1)
-	brct	%r3,.Lmemset_clear_loop
-.Lmemset_clear_rest:
-	ex	%r4,.Lmemset_xc-.Lmemset_base(%r5)
-	br	%r14
-.Lmemset_fill:
-	stc	%r3,0(%r2)
-	chi	%r4,1
-	lr	%r1,%r2
-	ber	%r14
-	ahi	%r4,-2
-	lr	%r3,%r4
-	srl	%r3,8
-	ltr	%r3,%r3
-	je	.Lmemset_fill_rest
-.Lmemset_fill_loop:
-	mvc	1(256,%r1),0(%r1)
-	la	%r1,256(%r1)
-	brct	%r3,.Lmemset_fill_loop
-.Lmemset_fill_rest:
-	ex	%r4,.Lmemset_mvc-.Lmemset_base(%r5)
-	br	%r14
-.Lmemset_xc:
-	xc	0(1,%r1),0(%r1)
-.Lmemset_mvc:
-	mvc	1(1,%r1),0(%r1)
-
-/*
- * memcpy implementation
- *
- * void *memcpy(void *dest, const void *src, size_t n)
- */
-ENTRY(memcpy)
-	basr	%r5,%r0
-.Lmemcpy_base:
-	ltr	%r4,%r4
-	bzr	%r14
-	ahi	%r4,-1
-	lr	%r0,%r4
-	srl	%r0,8
-	ltr	%r0,%r0
-	lr	%r1,%r2
-	jnz	.Lmemcpy_loop
-.Lmemcpy_rest:
-	ex	%r4,.Lmemcpy_mvc-.Lmemcpy_base(%r5)
-	br	%r14
-.Lmemcpy_loop:
-	mvc	0(256,%r1),0(%r3)
-	la	%r1,256(%r1)
-	la	%r3,256(%r3)
-	brct	%r0,.Lmemcpy_loop
-	j	.Lmemcpy_rest
-.Lmemcpy_mvc:
-	mvc	0(1,%r1),0(%r3)

arch/s390/lib/qrnnd.S

@@ -1,78 +0,0 @@
-# S/390 __udiv_qrnnd
-
-#include <linux/linkage.h>
-
-# r2 : &__r
-# r3 : upper half of 64 bit word n
-# r4 : lower half of 64 bit word n
-# r5 : divisor d
-# the reminder r of the division is to be stored to &__r and
-# the quotient q is to be returned
-
-	.text
-ENTRY(__udiv_qrnnd)
-	st    %r2,24(%r15)	  # store pointer to reminder for later
-	lr    %r0,%r3		  # reload n
-	lr    %r1,%r4
-	ltr   %r2,%r5		  # reload and test divisor
-	jp    5f
-	# divisor >= 0x80000000
-	srdl  %r0,2		  # n/4
-	srl   %r2,1		  # d/2
-	slr   %r1,%r2		  # special case if last bit of d is set
-	brc   3,0f		  #  (n/4) div (n/2) can overflow by 1
-	ahi   %r0,-1		  #  trick: subtract n/2, then divide
-0:	dr    %r0,%r2		  # signed division
-	ahi   %r1,1		  #  trick part 2: add 1 to the quotient
-	# now (n >> 2) = (d >> 1) * %r1 + %r0
-	lhi   %r3,1
-	nr    %r3,%r1		  # test last bit of q
-	jz    1f
-	alr   %r0,%r2		  # add (d>>1) to r
-1:	srl   %r1,1		  # q >>= 1
-	# now (n >> 2) = (d&-2) * %r1 + %r0
-	lhi   %r3,1
-	nr    %r3,%r5		  # test last bit of d
-	jz    2f
-	slr   %r0,%r1		  # r -= q
-	brc   3,2f		  # borrow ?
-	alr   %r0,%r5		  # r += d
-	ahi   %r1,-1
-2:	# now (n >> 2) = d * %r1 + %r0
-	alr   %r1,%r1		  # q <<= 1
-	alr   %r0,%r0		  # r <<= 1
-	brc   12,3f		  # overflow on r ?
-	slr   %r0,%r5		  # r -= d
-	ahi   %r1,1		  # q += 1
-3:	lhi   %r3,2
-	nr    %r3,%r4		  # test next to last bit of n
-	jz    4f
-	ahi   %r0,1		  # r += 1
-4:	clr   %r0,%r5		  # r >= d ?
-	jl    6f
-	slr   %r0,%r5		  # r -= d
-	ahi   %r1,1		  # q += 1
-	# now (n >> 1) = d * %r1 + %r0
-	j     6f
-5:	# divisor < 0x80000000
-	srdl  %r0,1
-	dr    %r0,%r2		  # signed division
-	# now (n >> 1) = d * %r1 + %r0
-6:	alr   %r1,%r1		  # q <<= 1
-	alr   %r0,%r0		  # r <<= 1
-	brc   12,7f		  # overflow on r ?
-	slr   %r0,%r5		  # r -= d
-	ahi   %r1,1		  # q += 1
-7:	lhi   %r3,1
-	nr    %r3,%r4		  # isolate last bit of n
-	alr   %r0,%r3		  # r += (n & 1)
-	clr   %r0,%r5		  # r >= d ?
-	jl    8f
-	slr   %r0,%r5		  # r -= d
-	ahi   %r1,1		  # q += 1
-8:	# now n = d * %r1 + %r0
-	l     %r2,24(%r15)
-	st    %r0,0(%r2)
-	lr    %r2,%r1
-	br    %r14
-	.end	__udiv_qrnnd

arch/s390/lib/uaccess.c

@@ -15,20 +15,6 @@
 #include <asm/mmu_context.h>
 #include <asm/facility.h>
 
-#ifndef CONFIG_64BIT
-#define AHI	"ahi"
-#define ALR	"alr"
-#define CLR	"clr"
-#define LHI	"lhi"
-#define SLR	"slr"
-#else
-#define AHI	"aghi"
-#define ALR	"algr"
-#define CLR	"clgr"
-#define LHI	"lghi"
-#define SLR	"slgr"
-#endif
-
 static struct static_key have_mvcos = STATIC_KEY_INIT_FALSE;
 
 static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr,
@@ -41,29 +27,29 @@ static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
 		"9: jz    7f\n"
-		"1:"ALR"  %0,%3\n"
-		"  "SLR"  %1,%3\n"
-		"  "SLR"  %2,%3\n"
+		"1: algr  %0,%3\n"
+		"   slgr  %1,%3\n"
+		"   slgr  %2,%3\n"
 		"   j     0b\n"
 		"2: la    %4,4095(%1)\n"/* %4 = ptr + 4095 */
 		"   nr    %4,%3\n"	/* %4 = (ptr + 4095) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   4f\n"
 		"3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
-		"10:"SLR"  %0,%4\n"
-		"  "ALR"  %2,%4\n"
-		"4:"LHI"  %4,-1\n"
-		"  "ALR"  %4,%0\n"	/* copy remaining size, subtract 1 */
+		"10:slgr  %0,%4\n"
+		"   algr  %2,%4\n"
+		"4: lghi  %4,-1\n"
+		"   algr  %4,%0\n"	/* copy remaining size, subtract 1 */
 		"   bras  %3,6f\n"	/* memset loop */
 		"   xc    0(1,%2),0(%2)\n"
 		"5: xc    0(256,%2),0(%2)\n"
 		"   la    %2,256(%2)\n"
-		"6:"AHI"  %4,-256\n"
+		"6: aghi  %4,-256\n"
 		"   jnm   5b\n"
 		"   ex    %4,0(%3)\n"
 		"   j     8f\n"
-		"7:"SLR"  %0,%0\n"
+		"7:slgr  %0,%0\n"
 		"8:\n"
 		EX_TABLE(0b,2b) EX_TABLE(3b,4b) EX_TABLE(9b,2b) EX_TABLE(10b,4b)
 		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
@@ -82,32 +68,32 @@ static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr,
 		"   sacf  0\n"
 		"0: mvcp  0(%0,%2),0(%1),%3\n"
 		"10:jz    8f\n"
-		"1:"ALR"  %0,%3\n"
+		"1: algr  %0,%3\n"
 		"   la    %1,256(%1)\n"
 		"   la    %2,256(%2)\n"
 		"2: mvcp  0(%0,%2),0(%1),%3\n"
 		"11:jnz   1b\n"
 		"   j     8f\n"
 		"3: la    %4,255(%1)\n"	/* %4 = ptr + 255 */
-		"  "LHI"  %3,-4096\n"
+		"   lghi  %3,-4096\n"
 		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   5f\n"
 		"4: mvcp  0(%4,%2),0(%1),%3\n"
-		"12:"SLR"  %0,%4\n"
-		"  "ALR"  %2,%4\n"
-		"5:"LHI"  %4,-1\n"
-		"  "ALR"  %4,%0\n"	/* copy remaining size, subtract 1 */
+		"12:slgr  %0,%4\n"
+		"   algr  %2,%4\n"
+		"5: lghi  %4,-1\n"
+		"   algr  %4,%0\n"	/* copy remaining size, subtract 1 */
 		"   bras  %3,7f\n"	/* memset loop */
 		"   xc    0(1,%2),0(%2)\n"
 		"6: xc    0(256,%2),0(%2)\n"
 		"   la    %2,256(%2)\n"
-		"7:"AHI"  %4,-256\n"
+		"7: aghi  %4,-256\n"
 		"   jnm   6b\n"
 		"   ex    %4,0(%3)\n"
 		"   j     9f\n"
-		"8:"SLR"  %0,%0\n"
+		"8:slgr  %0,%0\n"
 		"9: sacf  768\n"
 		EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,5b)
 		EX_TABLE(10b,3b) EX_TABLE(11b,3b) EX_TABLE(12b,5b)
@@ -134,19 +120,19 @@ static inline unsigned long copy_to_user_mvcos(void __user *ptr, const void *x,
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
 		"6: jz    4f\n"
-		"1:"ALR"  %0,%3\n"
-		"  "SLR"  %1,%3\n"
-		"  "SLR"  %2,%3\n"
+		"1: algr  %0,%3\n"
+		"   slgr  %1,%3\n"
+		"   slgr  %2,%3\n"
 		"   j     0b\n"
 		"2: la    %4,4095(%1)\n"/* %4 = ptr + 4095 */
 		"   nr    %4,%3\n"	/* %4 = (ptr + 4095) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   5f\n"
 		"3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
-		"7:"SLR"  %0,%4\n"
+		"7: slgr  %0,%4\n"
 		"   j     5f\n"
-		"4:"SLR"  %0,%0\n"
+		"4: slgr  %0,%0\n"
 		"5:\n"
 		EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b)
 		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
@@ -165,22 +151,22 @@ static inline unsigned long copy_to_user_mvcs(void __user *ptr, const void *x,
 		"   sacf  0\n"
 		"0: mvcs  0(%0,%1),0(%2),%3\n"
 		"7: jz    5f\n"
-		"1:"ALR"  %0,%3\n"
+		"1: algr  %0,%3\n"
 		"   la    %1,256(%1)\n"
 		"   la    %2,256(%2)\n"
 		"2: mvcs  0(%0,%1),0(%2),%3\n"
 		"8: jnz   1b\n"
 		"   j     5f\n"
 		"3: la    %4,255(%1)\n" /* %4 = ptr + 255 */
-		"  "LHI"  %3,-4096\n"
+		"   lghi  %3,-4096\n"
 		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   6f\n"
 		"4: mvcs  0(%4,%1),0(%2),%3\n"
-		"9:"SLR"  %0,%4\n"
+		"9: slgr  %0,%4\n"
 		"   j     6f\n"
-		"5:"SLR"  %0,%0\n"
+		"5: slgr  %0,%0\n"
 		"6: sacf  768\n"
 		EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
 		EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b)
@@ -208,11 +194,11 @@ static inline unsigned long copy_in_user_mvcos(void __user *to, const void __use
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
 		"   jz	  2f\n"
-		"1:"ALR"  %0,%3\n"
-		"  "SLR"  %1,%3\n"
-		"  "SLR"  %2,%3\n"
+		"1: algr  %0,%3\n"
+		"   slgr  %1,%3\n"
+		"   slgr  %2,%3\n"
 		"   j	  0b\n"
-		"2:"SLR"  %0,%0\n"
+		"2:slgr  %0,%0\n"
 		"3: \n"
 		EX_TABLE(0b,3b)
 		: "+a" (size), "+a" (to), "+a" (from), "+a" (tmp1), "=a" (tmp2)
@@ -228,23 +214,23 @@ static inline unsigned long copy_in_user_mvc(void __user *to, const void __user
 	load_kernel_asce();
 	asm volatile(
 		"   sacf  256\n"
-		"  "AHI"  %0,-1\n"
+		"   aghi  %0,-1\n"
 		"   jo	  5f\n"
 		"   bras  %3,3f\n"
-		"0:"AHI"  %0,257\n"
+		"0: aghi  %0,257\n"
 		"1: mvc	  0(1,%1),0(%2)\n"
 		"   la	  %1,1(%1)\n"
 		"   la	  %2,1(%2)\n"
-		"  "AHI"  %0,-1\n"
+		"   aghi  %0,-1\n"
 		"   jnz	  1b\n"
 		"   j	  5f\n"
 		"2: mvc	  0(256,%1),0(%2)\n"
 		"   la	  %1,256(%1)\n"
 		"   la	  %2,256(%2)\n"
-		"3:"AHI"  %0,-256\n"
+		"3: aghi  %0,-256\n"
 		"   jnm	  2b\n"
 		"4: ex	  %0,1b-0b(%3)\n"
-		"5: "SLR"  %0,%0\n"
+		"5: slgr  %0,%0\n"
 		"6: sacf  768\n"
 		EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
 		: "+a" (size), "+a" (to), "+a" (from), "=a" (tmp1)
@@ -269,18 +255,18 @@ static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%1),0(%4),0\n"
 		"   jz	  4f\n"
-		"1:"ALR"  %0,%2\n"
-		"  "SLR"  %1,%2\n"
+		"1: algr  %0,%2\n"
+		"   slgr  %1,%2\n"
 		"   j	  0b\n"
 		"2: la	  %3,4095(%1)\n"/* %4 = to + 4095 */
 		"   nr	  %3,%2\n"	/* %4 = (to + 4095) & -4096 */
-		"  "SLR"  %3,%1\n"
-		"  "CLR"  %0,%3\n"	/* copy crosses next page boundary? */
+		"   slgr  %3,%1\n"
+		"   clgr  %0,%3\n"	/* copy crosses next page boundary? */
 		"   jnh	  5f\n"
 		"3: .insn ss,0xc80000000000,0(%3,%1),0(%4),0\n"
-		"  "SLR"  %0,%3\n"
+		"   slgr  %0,%3\n"
 		"   j	  5f\n"
-		"4:"SLR"  %0,%0\n"
+		"4:slgr  %0,%0\n"
 		"5:\n"
 		EX_TABLE(0b,2b) EX_TABLE(3b,5b)
 		: "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2)
@@ -295,28 +281,28 @@ static inline unsigned long clear_user_xc(void __user *to, unsigned long size)
 	load_kernel_asce();
 	asm volatile(
 		"   sacf  256\n"
-		"  "AHI"  %0,-1\n"
+		"   aghi  %0,-1\n"
 		"   jo    5f\n"
 		"   bras  %3,3f\n"
 		"   xc    0(1,%1),0(%1)\n"
-		"0:"AHI"  %0,257\n"
+		"0: aghi  %0,257\n"
 		"   la    %2,255(%1)\n" /* %2 = ptr + 255 */
 		"   srl   %2,12\n"
 		"   sll   %2,12\n"	/* %2 = (ptr + 255) & -4096 */
-		"  "SLR"  %2,%1\n"
-		"  "CLR"  %0,%2\n"	/* clear crosses next page boundary? */
+		"   slgr  %2,%1\n"
+		"   clgr  %0,%2\n"	/* clear crosses next page boundary? */
 		"   jnh   5f\n"
-		"  "AHI"  %2,-1\n"
+		"   aghi  %2,-1\n"
 		"1: ex    %2,0(%3)\n"
-		"  "AHI"  %2,1\n"
-		"  "SLR"  %0,%2\n"
+		"   aghi  %2,1\n"
+		"   slgr  %0,%2\n"
 		"   j     5f\n"
 		"2: xc    0(256,%1),0(%1)\n"
 		"   la    %1,256(%1)\n"
-		"3:"AHI"  %0,-256\n"
+		"3: aghi  %0,-256\n"
 		"   jnm   2b\n"
 		"4: ex    %0,0(%3)\n"
-		"5: "SLR"  %0,%0\n"
+		"5: slgr  %0,%0\n"
 		"6: sacf  768\n"
 		EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
 		: "+a" (size), "+a" (to), "=a" (tmp1), "=a" (tmp2)
@@ -341,12 +327,12 @@ static inline unsigned long strnlen_user_srst(const char __user *src,
 	asm volatile(
 		"   la    %2,0(%1)\n"
 		"   la    %3,0(%0,%1)\n"
-		"  "SLR"  %0,%0\n"
+		"   slgr  %0,%0\n"
 		"   sacf  256\n"
 		"0: srst  %3,%2\n"
 		"   jo    0b\n"
 		"   la    %0,1(%3)\n"	/* strnlen_user results includes \0 */
-		"  "SLR"  %0,%1\n"
+		"   slgr  %0,%1\n"
 		"1: sacf  768\n"
 		EX_TABLE(0b,1b)
 		: "+a" (size), "+a" (src), "=a" (tmp1), "=a" (tmp2)
@@ -399,7 +385,7 @@ early_param("uaccess_primary", parse_uaccess_pt);
 
 static int __init uaccess_init(void)
 {
-	if (IS_ENABLED(CONFIG_64BIT) && !uaccess_primary && test_facility(27))
+	if (!uaccess_primary && test_facility(27))
 		static_key_slow_inc(&have_mvcos);
 	return 0;
 }

arch/s390/lib/ucmpdi2.c

@@ -1,26 +0,0 @@
-#include <linux/module.h>
-
-union ull_union {
-	unsigned long long ull;
-	struct {
-		unsigned int high;
-		unsigned int low;
-	} ui;
-};
-
-int __ucmpdi2(unsigned long long a, unsigned long long b)
-{
-	union ull_union au = {.ull = a};
-	union ull_union bu = {.ull = b};
-
-	if (au.ui.high < bu.ui.high)
-		return 0;
-	else if (au.ui.high > bu.ui.high)
-		return 2;
-	if (au.ui.low < bu.ui.low)
-		return 0;
-	else if (au.ui.low > bu.ui.low)
-		return 2;
-	return 1;
-}
-EXPORT_SYMBOL(__ucmpdi2);

arch/s390/math-emu/Makefile

@@ -1,7 +0,0 @@
-#
-# Makefile for the FPU instruction emulation.
-#
-
-obj-$(CONFIG_MATHEMU) := math.o
-
-ccflags-y := -I$(src) -Iinclude/math-emu -w

arch/s390/math-emu/math.c

@@ -1,2255 +0,0 @@
-/*
- *  S390 version
- *    Copyright IBM Corp. 1999, 2001
- *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- *
- * 'math.c' emulates IEEE instructions on a S390 processor
- *          that does not have the IEEE fpu (all processors before G5).
- */
-
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <asm/uaccess.h>
-#include <asm/lowcore.h>
-
-#include <asm/sfp-util.h>
-#include <math-emu/soft-fp.h>
-#include <math-emu/single.h>
-#include <math-emu/double.h>
-#include <math-emu/quad.h>
-
-#define FPC_VALID_MASK		0xF8F8FF03
-
-/*
- * I miss a macro to round a floating point number to the
- * nearest integer in the same floating point format.
- */
-#define _FP_TO_FPINT_ROUND(fs, wc, X)					\
-  do {									\
-    switch (X##_c)							\
-      {									\
-      case FP_CLS_NORMAL:						\
-        if (X##_e > _FP_FRACBITS_##fs + _FP_EXPBIAS_##fs)		\
-          { /* floating point number has no bits after the dot. */	\
-          }								\
-        else if (X##_e <= _FP_FRACBITS_##fs + _FP_EXPBIAS_##fs &&	\
-                 X##_e > _FP_EXPBIAS_##fs)				\
-	  { /* some bits before the dot, some after it. */		\
-            _FP_FRAC_SRS_##wc(X, _FP_WFRACBITS_##fs,			\
-                              X##_e - _FP_EXPBIAS_##fs			\
-                              + _FP_FRACBITS_##fs);			\
-	    _FP_ROUND(wc, X);						\
-	    _FP_FRAC_SLL_##wc(X, X##_e - _FP_EXPBIAS_##fs		\
-                              + _FP_FRACBITS_##fs);			\
-          }								\
-        else								\
-          { /* all bits after the dot. */				\
-	    FP_SET_EXCEPTION(FP_EX_INEXACT);				\
-            X##_c = FP_CLS_ZERO;					\
-	  }								\
-        break;								\
-      case FP_CLS_NAN:							\
-      case FP_CLS_INF:							\
-      case FP_CLS_ZERO:							\
-        break;								\
-      }									\
-  } while (0)
-
-#define FP_TO_FPINT_ROUND_S(X)	_FP_TO_FPINT_ROUND(S,1,X)
-#define FP_TO_FPINT_ROUND_D(X)	_FP_TO_FPINT_ROUND(D,2,X)
-#define FP_TO_FPINT_ROUND_Q(X)	_FP_TO_FPINT_ROUND(Q,4,X)
-
-typedef union {
-        long double ld;
-        struct {
-                __u64 high;
-                __u64 low;
-        } w;
-} mathemu_ldcv;
-
-#ifdef CONFIG_SYSCTL
-int sysctl_ieee_emulation_warnings=1;
-#endif
-
-#define mathemu_put_user(x, p) \
-        do { \
-                if (put_user((x),(p))) \
-                        return SIGSEGV; \
-        } while (0)
-
-#define mathemu_get_user(x, p) \
-        do { \
-                if (get_user((x),(p))) \
-                        return SIGSEGV; \
-        } while (0)
-
-#define mathemu_copy_from_user(d, s, n)\
-        do { \
-                if (copy_from_user((d),(s),(n)) != 0) \
-                        return SIGSEGV; \
-        } while (0)
-
-#define mathemu_copy_to_user(d, s, n) \
-        do { \
-                if (copy_to_user((d),(s),(n)) != 0) \
-                        return SIGSEGV; \
-        } while (0)
-
-static void display_emulation_not_implemented(struct pt_regs *regs, char *instr)
-{
-        __u16 *location;
-        
-#ifdef CONFIG_SYSCTL
-        if(sysctl_ieee_emulation_warnings)
-#endif
-        {
-                location = (__u16 *)(regs->psw.addr-S390_lowcore.pgm_ilc);
-                printk("%s ieee fpu instruction not emulated "
-                       "process name: %s pid: %d \n",
-                       instr, current->comm, current->pid);
-                printk("%s's PSW:    %08lx %08lx\n", instr,
-                       (unsigned long) regs->psw.mask,
-                       (unsigned long) location);
-        }
-}
-
-static inline void emu_set_CC (struct pt_regs *regs, int cc)
-{
-        regs->psw.mask = (regs->psw.mask & 0xFFFFCFFF) | ((cc&3) << 12);
-}
-
-/*
- * Set the condition code in the user psw.
- *  0 : Result is zero
- *  1 : Result is less than zero
- *  2 : Result is greater than zero
- *  3 : Result is NaN or INF
- */
-static inline void emu_set_CC_cs(struct pt_regs *regs, int class, int sign)
-{
-        switch (class) {
-        case FP_CLS_NORMAL:
-        case FP_CLS_INF:
-                emu_set_CC(regs, sign ? 1 : 2);
-                break;
-        case FP_CLS_ZERO:
-                emu_set_CC(regs, 0);
-                break;
-        case FP_CLS_NAN:
-                emu_set_CC(regs, 3);
-                break;
-        }
-}
-
-/* Add long double */
-static int emu_axbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QB, &cvt.ld);
-        FP_ADD_Q(QR, QA, QB);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        emu_set_CC_cs(regs, QR_c, QR_s);
-        return _fex;
-}
-
-/* Add double */
-static int emu_adbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_ADD_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Add double */
-static int emu_adb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, val);
-        FP_ADD_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Add float */
-static int emu_aebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_ADD_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Add float */
-static int emu_aeb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, val);
-        FP_ADD_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Compare long double */
-static int emu_cxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB);
-	mathemu_ldcv cvt;
-        int IR;
-
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_RAW_QP(QA, &cvt.ld);
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_RAW_QP(QB, &cvt.ld);
-        FP_CMP_Q(IR, QA, QB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        return 0;
-}
-
-/* Compare double */
-static int emu_cdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DB);
-        int IR;
-
-        FP_UNPACK_RAW_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_RAW_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_CMP_D(IR, DA, DB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        return 0;
-}
-
-/* Compare double */
-static int emu_cdb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DB);
-        int IR;
-
-        FP_UNPACK_RAW_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_RAW_DP(DB, val);
-        FP_CMP_D(IR, DA, DB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        return 0;
-}
-
-/* Compare float */
-static int emu_cebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SB);
-        int IR;
-
-        FP_UNPACK_RAW_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_RAW_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_CMP_S(IR, SA, SB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        return 0;
-}
-
-/* Compare float */
-static int emu_ceb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SB);
-        int IR;
-
-        FP_UNPACK_RAW_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_RAW_SP(SB, val);
-        FP_CMP_S(IR, SA, SB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        return 0;
-}
-
-/* Compare and signal long double */
-static int emu_kxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int IR;
-
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_RAW_QP(QA, &cvt.ld);
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QB, &cvt.ld);
-        FP_CMP_Q(IR, QA, QB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        if (IR == 3)
-                FP_SET_EXCEPTION (FP_EX_INVALID);
-        return _fex;
-}
-
-/* Compare and signal double */
-static int emu_kdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DB);
-        FP_DECL_EX;
-        int IR;
-
-        FP_UNPACK_RAW_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_RAW_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_CMP_D(IR, DA, DB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        if (IR == 3)
-                FP_SET_EXCEPTION (FP_EX_INVALID);
-        return _fex;
-}
-
-/* Compare and signal double */
-static int emu_kdb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DB);
-        FP_DECL_EX;
-        int IR;
-
-        FP_UNPACK_RAW_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_RAW_DP(DB, val);
-        FP_CMP_D(IR, DA, DB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        if (IR == 3)
-                FP_SET_EXCEPTION (FP_EX_INVALID);
-        return _fex;
-}
-
-/* Compare and signal float */
-static int emu_kebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SB);
-        FP_DECL_EX;
-        int IR;
-
-        FP_UNPACK_RAW_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_RAW_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_CMP_S(IR, SA, SB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        if (IR == 3)
-                FP_SET_EXCEPTION (FP_EX_INVALID);
-        return _fex;
-}
-
-/* Compare and signal float */
-static int emu_keb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SB);
-        FP_DECL_EX;
-        int IR;
-
-        FP_UNPACK_RAW_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_RAW_SP(SB, val);
-        FP_CMP_S(IR, SA, SB, 3);
-        /*
-         * IR == -1 if DA < DB, IR == 0 if DA == DB,
-         * IR == 1 if DA > DB and IR == 3 if unorderded
-         */
-        emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
-        if (IR == 3)
-                FP_SET_EXCEPTION (FP_EX_INVALID);
-        return _fex;
-}
-
-/* Convert from fixed long double */
-static int emu_cxfbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        __s32 si;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        si = regs->gprs[ry];
-        FP_FROM_INT_Q(QR, si, 32, int);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Convert from fixed double */
-static int emu_cdfbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DR);
-        FP_DECL_EX;
-        __s32 si;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        si = regs->gprs[ry];
-        FP_FROM_INT_D(DR, si, 32, int);
-        FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Convert from fixed float */
-static int emu_cefbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SR);
-        FP_DECL_EX;
-        __s32 si;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        si = regs->gprs[ry];
-        FP_FROM_INT_S(SR, si, 32, int);
-        FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Convert to fixed long double */
-static int emu_cfxbr (struct pt_regs *regs, int rx, int ry, int mask) {
-        FP_DECL_Q(QA);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        __s32 si;
-        int mode;
-
-	if (mask == 0)
-		mode = current->thread.fp_regs.fpc & 3;
-	else if (mask == 1)
-		mode = FP_RND_NEAREST;
-	else
-		mode = mask - 4;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        FP_TO_INT_ROUND_Q(si, QA, 32, 1);
-        regs->gprs[rx] = si;
-        emu_set_CC_cs(regs, QA_c, QA_s);
-        return _fex;
-}
-
-/* Convert to fixed double */
-static int emu_cfdbr (struct pt_regs *regs, int rx, int ry, int mask) {
-        FP_DECL_D(DA);
-        FP_DECL_EX;
-        __s32 si;
-        int mode;
-
-	if (mask == 0)
-		mode = current->thread.fp_regs.fpc & 3;
-	else if (mask == 1)
-		mode = FP_RND_NEAREST;
-	else
-		mode = mask - 4;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-        FP_TO_INT_ROUND_D(si, DA, 32, 1);
-        regs->gprs[rx] = si;
-        emu_set_CC_cs(regs, DA_c, DA_s);
-        return _fex;
-}
-
-/* Convert to fixed float */
-static int emu_cfebr (struct pt_regs *regs, int rx, int ry, int mask) {
-        FP_DECL_S(SA);
-        FP_DECL_EX;
-        __s32 si;
-        int mode;
-
-	if (mask == 0)
-		mode = current->thread.fp_regs.fpc & 3;
-	else if (mask == 1)
-		mode = FP_RND_NEAREST;
-	else
-		mode = mask - 4;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-        FP_TO_INT_ROUND_S(si, SA, 32, 1);
-        regs->gprs[rx] = si;
-        emu_set_CC_cs(regs, SA_c, SA_s);
-        return _fex;
-}
-
-/* Divide long double */
-static int emu_dxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QB, &cvt.ld);
-        FP_DIV_Q(QR, QA, QB);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Divide double */
-static int emu_ddbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_DIV_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Divide double */
-static int emu_ddb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, val);
-        FP_DIV_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Divide float */
-static int emu_debr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_DIV_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Divide float */
-static int emu_deb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, val);
-        FP_DIV_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Divide to integer double */
-static int emu_didbr (struct pt_regs *regs, int rx, int ry, int mask) {
-        display_emulation_not_implemented(regs, "didbr");
-        return 0;
-}
-
-/* Divide to integer float */
-static int emu_diebr (struct pt_regs *regs, int rx, int ry, int mask) {
-        display_emulation_not_implemented(regs, "diebr");
-        return 0;
-}
-
-/* Extract fpc */
-static int emu_efpc (struct pt_regs *regs, int rx, int ry) {
-        regs->gprs[rx] = current->thread.fp_regs.fpc;
-        return 0;
-}
-
-/* Load and test long double */
-static int emu_ltxbr (struct pt_regs *regs, int rx, int ry) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-	mathemu_ldcv cvt;
-        FP_DECL_Q(QA);
-        FP_DECL_EX;
-
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        fp_regs->fprs[rx].ui = fp_regs->fprs[ry].ui;
-        fp_regs->fprs[rx+2].ui = fp_regs->fprs[ry+2].ui;
-        emu_set_CC_cs(regs, QA_c, QA_s);
-        return _fex;
-}
-
-/* Load and test double */
-static int emu_ltdbr (struct pt_regs *regs, int rx, int ry) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        FP_DECL_D(DA);
-        FP_DECL_EX;
-
-        FP_UNPACK_DP(DA, &fp_regs->fprs[ry].d);
-        fp_regs->fprs[rx].ui = fp_regs->fprs[ry].ui;
-        emu_set_CC_cs(regs, DA_c, DA_s);
-        return _fex;
-}
-
-/* Load and test double */
-static int emu_ltebr (struct pt_regs *regs, int rx, int ry) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        FP_DECL_S(SA);
-        FP_DECL_EX;
-
-        FP_UNPACK_SP(SA, &fp_regs->fprs[ry].f);
-        fp_regs->fprs[rx].ui = fp_regs->fprs[ry].ui;
-        emu_set_CC_cs(regs, SA_c, SA_s);
-        return _fex;
-}
-
-/* Load complement long double */
-static int emu_lcxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-	FP_NEG_Q(QR, QA);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        emu_set_CC_cs(regs, QR_c, QR_s);
-        return _fex;
-}
-
-/* Load complement double */
-static int emu_lcdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-	FP_NEG_D(DR, DA);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Load complement float */
-static int emu_lcebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-	FP_NEG_S(SR, SA);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Load floating point integer long double */
-static int emu_fixbr (struct pt_regs *regs, int rx, int ry, int mask) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        FP_DECL_Q(QA);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        __s32 si;
-        int mode;
-
-	if (mask == 0)
-		mode = fp_regs->fpc & 3;
-	else if (mask == 1)
-		mode = FP_RND_NEAREST;
-	else
-		mode = mask - 4;
-        cvt.w.high = fp_regs->fprs[ry].ui;
-        cvt.w.low = fp_regs->fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-	FP_TO_FPINT_ROUND_Q(QA);
-	FP_PACK_QP(&cvt.ld, QA);
-	fp_regs->fprs[rx].ui = cvt.w.high;
-	fp_regs->fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Load floating point integer double */
-static int emu_fidbr (struct pt_regs *regs, int rx, int ry, int mask) {
-	/* FIXME: rounding mode !! */
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        FP_DECL_D(DA);
-        FP_DECL_EX;
-        __s32 si;
-        int mode;
-
-	if (mask == 0)
-		mode = fp_regs->fpc & 3;
-	else if (mask == 1)
-		mode = FP_RND_NEAREST;
-	else
-		mode = mask - 4;
-        FP_UNPACK_DP(DA, &fp_regs->fprs[ry].d);
-	FP_TO_FPINT_ROUND_D(DA);
-	FP_PACK_DP(&fp_regs->fprs[rx].d, DA);
-        return _fex;
-}
-
-/* Load floating point integer float */
-static int emu_fiebr (struct pt_regs *regs, int rx, int ry, int mask) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        FP_DECL_S(SA);
-        FP_DECL_EX;
-        __s32 si;
-        int mode;
-
-	if (mask == 0)
-		mode = fp_regs->fpc & 3;
-	else if (mask == 1)
-		mode = FP_RND_NEAREST;
-	else
-		mode = mask - 4;
-        FP_UNPACK_SP(SA, &fp_regs->fprs[ry].f);
-	FP_TO_FPINT_ROUND_S(SA);
-	FP_PACK_SP(&fp_regs->fprs[rx].f, SA);
-        return _fex;
-}
-
-/* Load lengthened double to long double */
-static int emu_lxdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-	FP_CONV (Q, D, 4, 2, QR, DA);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Load lengthened double to long double */
-static int emu_lxdb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, val);
-	FP_CONV (Q, D, 4, 2, QR, DA);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Load lengthened float to long double */
-static int emu_lxebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-	FP_CONV (Q, S, 4, 1, QR, SA);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Load lengthened float to long double */
-static int emu_lxeb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, val);
-	FP_CONV (Q, S, 4, 1, QR, SA);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Load lengthened float to double */
-static int emu_ldebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_D(DR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-	FP_CONV (D, S, 2, 1, DR, SA);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Load lengthened float to double */
-static int emu_ldeb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_D(DR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, val);
-	FP_CONV (D, S, 2, 1, DR, SA);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Load negative long double */
-static int emu_lnxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        if (QA_s == 0) {
-		FP_NEG_Q(QR, QA);
-		FP_PACK_QP(&cvt.ld, QR);
-		current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-		current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-	} else {
-		current->thread.fp_regs.fprs[rx].ui =
-			current->thread.fp_regs.fprs[ry].ui;
-		current->thread.fp_regs.fprs[rx+2].ui =
-			current->thread.fp_regs.fprs[ry+2].ui;
-	}
-	emu_set_CC_cs(regs, QR_c, QR_s);
-        return _fex;
-}
-
-/* Load negative double */
-static int emu_lndbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-        if (DA_s == 0) {
-		FP_NEG_D(DR, DA);
-		FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-	} else
-		current->thread.fp_regs.fprs[rx].ui =
-			current->thread.fp_regs.fprs[ry].ui;
-	emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Load negative float */
-static int emu_lnebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-        if (SA_s == 0) {
-		FP_NEG_S(SR, SA);
-		FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-	} else
-		current->thread.fp_regs.fprs[rx].ui =
-			current->thread.fp_regs.fprs[ry].ui;
-	emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Load positive long double */
-static int emu_lpxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        if (QA_s != 0) {
-		FP_NEG_Q(QR, QA);
-		FP_PACK_QP(&cvt.ld, QR);
-		current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-		current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-	} else{
-		current->thread.fp_regs.fprs[rx].ui =
-			current->thread.fp_regs.fprs[ry].ui;
-		current->thread.fp_regs.fprs[rx+2].ui =
-			current->thread.fp_regs.fprs[ry+2].ui;
-	}
-	emu_set_CC_cs(regs, QR_c, QR_s);
-        return _fex;
-}
-
-/* Load positive double */
-static int emu_lpdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-        if (DA_s != 0) {
-		FP_NEG_D(DR, DA);
-		FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-	} else
-		current->thread.fp_regs.fprs[rx].ui =
-			current->thread.fp_regs.fprs[ry].ui;
-	emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Load positive float */
-static int emu_lpebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-        if (SA_s != 0) {
-		FP_NEG_S(SR, SA);
-		FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-	} else
-		current->thread.fp_regs.fprs[rx].ui =
-			current->thread.fp_regs.fprs[ry].ui;
-	emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Load rounded long double to double */
-static int emu_ldxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_D(DR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-	FP_CONV (D, Q, 2, 4, DR, QA);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].f, DR);
-        return _fex;
-}
-
-/* Load rounded long double to float */
-static int emu_lexbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_S(SR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-	FP_CONV (S, Q, 1, 4, SR, QA);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Load rounded double to float */
-static int emu_ledbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_S(SR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-	FP_CONV (S, D, 1, 2, SR, DA);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Multiply long double */
-static int emu_mxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QB, &cvt.ld);
-        FP_MUL_Q(QR, QA, QB);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Multiply double */
-static int emu_mdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_MUL_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Multiply double */
-static int emu_mdb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, val);
-        FP_MUL_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Multiply double to long double */
-static int emu_mxdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-	FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-	FP_CONV (Q, D, 4, 2, QA, DA);
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-	FP_CONV (Q, D, 4, 2, QB, DA);
-        FP_MUL_Q(QR, QA, QB);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Multiply double to long double */
-static int emu_mxdb (struct pt_regs *regs, int rx, long double *val) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        FP_UNPACK_QP(QB, val);
-        FP_MUL_Q(QR, QA, QB);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        return _fex;
-}
-
-/* Multiply float */
-static int emu_meebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_MUL_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Multiply float */
-static int emu_meeb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, val);
-        FP_MUL_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        return _fex;
-}
-
-/* Multiply float to double */
-static int emu_mdebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-	FP_CONV (D, S, 2, 1, DA, SA);
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-	FP_CONV (D, S, 2, 1, DB, SA);
-        FP_MUL_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Multiply float to double */
-static int emu_mdeb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-	FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-	FP_CONV (D, S, 2, 1, DA, SA);
-        FP_UNPACK_SP(SA, val);
-	FP_CONV (D, S, 2, 1, DB, SA);
-        FP_MUL_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        return _fex;
-}
-
-/* Multiply and add double */
-static int emu_madbr (struct pt_regs *regs, int rx, int ry, int rz) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_UNPACK_DP(DC, &current->thread.fp_regs.fprs[rz].d);
-        FP_MUL_D(DR, DA, DB);
-        FP_ADD_D(DR, DR, DC);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rz].d, DR);
-        return _fex;
-}
-
-/* Multiply and add double */
-static int emu_madb (struct pt_regs *regs, int rx, double *val, int rz) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, val);
-        FP_UNPACK_DP(DC, &current->thread.fp_regs.fprs[rz].d);
-        FP_MUL_D(DR, DA, DB);
-        FP_ADD_D(DR, DR, DC);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rz].d, DR);
-        return _fex;
-}
-
-/* Multiply and add float */
-static int emu_maebr (struct pt_regs *regs, int rx, int ry, int rz) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_UNPACK_SP(SC, &current->thread.fp_regs.fprs[rz].f);
-        FP_MUL_S(SR, SA, SB);
-        FP_ADD_S(SR, SR, SC);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rz].f, SR);
-        return _fex;
-}
-
-/* Multiply and add float */
-static int emu_maeb (struct pt_regs *regs, int rx, float *val, int rz) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, val);
-        FP_UNPACK_SP(SC, &current->thread.fp_regs.fprs[rz].f);
-        FP_MUL_S(SR, SA, SB);
-        FP_ADD_S(SR, SR, SC);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rz].f, SR);
-        return _fex;
-}
-
-/* Multiply and subtract double */
-static int emu_msdbr (struct pt_regs *regs, int rx, int ry, int rz) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_UNPACK_DP(DC, &current->thread.fp_regs.fprs[rz].d);
-        FP_MUL_D(DR, DA, DB);
-        FP_SUB_D(DR, DR, DC);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rz].d, DR);
-        return _fex;
-}
-
-/* Multiply and subtract double */
-static int emu_msdb (struct pt_regs *regs, int rx, double *val, int rz) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, val);
-        FP_UNPACK_DP(DC, &current->thread.fp_regs.fprs[rz].d);
-        FP_MUL_D(DR, DA, DB);
-        FP_SUB_D(DR, DR, DC);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rz].d, DR);
-        return _fex;
-}
-
-/* Multiply and subtract float */
-static int emu_msebr (struct pt_regs *regs, int rx, int ry, int rz) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_UNPACK_SP(SC, &current->thread.fp_regs.fprs[rz].f);
-        FP_MUL_S(SR, SA, SB);
-        FP_SUB_S(SR, SR, SC);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rz].f, SR);
-        return _fex;
-}
-
-/* Multiply and subtract float */
-static int emu_mseb (struct pt_regs *regs, int rx, float *val, int rz) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, val);
-        FP_UNPACK_SP(SC, &current->thread.fp_regs.fprs[rz].f);
-        FP_MUL_S(SR, SA, SB);
-        FP_SUB_S(SR, SR, SC);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rz].f, SR);
-        return _fex;
-}
-
-/* Set floating point control word */
-static int emu_sfpc (struct pt_regs *regs, int rx, int ry) {
-        __u32 temp;
-
-        temp = regs->gprs[rx];
-        if ((temp & ~FPC_VALID_MASK) != 0)
-		return SIGILL;
-	current->thread.fp_regs.fpc = temp;
-        return 0;
-}
-
-/* Square root long double */
-static int emu_sqxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-	FP_SQRT_Q(QR, QA);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        emu_set_CC_cs(regs, QR_c, QR_s);
-        return _fex;
-}
-
-/* Square root double */
-static int emu_sqdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[ry].d);
-	FP_SQRT_D(DR, DA);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Square root double */
-static int emu_sqdb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, val);
-	FP_SQRT_D(DR, DA);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Square root float */
-static int emu_sqebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[ry].f);
-	FP_SQRT_S(SR, SA);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Square root float */
-static int emu_sqeb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, val);
-	FP_SQRT_S(SR, SA);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Subtract long double */
-static int emu_sxbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-        FP_DECL_EX;
-	mathemu_ldcv cvt;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_QP(QA, &cvt.ld);
-        cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
-        FP_UNPACK_QP(QB, &cvt.ld);
-        FP_SUB_Q(QR, QA, QB);
-        FP_PACK_QP(&cvt.ld, QR);
-        current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
-        current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
-        emu_set_CC_cs(regs, QR_c, QR_s);
-        return _fex;
-}
-
-/* Subtract double */
-static int emu_sdbr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, &current->thread.fp_regs.fprs[ry].d);
-        FP_SUB_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Subtract double */
-static int emu_sdb (struct pt_regs *regs, int rx, double *val) {
-        FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-        FP_UNPACK_DP(DB, val);
-        FP_SUB_D(DR, DA, DB);
-	FP_PACK_DP(&current->thread.fp_regs.fprs[rx].d, DR);
-        emu_set_CC_cs(regs, DR_c, DR_s);
-        return _fex;
-}
-
-/* Subtract float */
-static int emu_sebr (struct pt_regs *regs, int rx, int ry) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, &current->thread.fp_regs.fprs[ry].f);
-        FP_SUB_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Subtract float */
-static int emu_seb (struct pt_regs *regs, int rx, float *val) {
-        FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-        FP_DECL_EX;
-        int mode;
-
-	mode = current->thread.fp_regs.fpc & 3;
-        FP_UNPACK_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-        FP_UNPACK_SP(SB, val);
-        FP_SUB_S(SR, SA, SB);
-	FP_PACK_SP(&current->thread.fp_regs.fprs[rx].f, SR);
-        emu_set_CC_cs(regs, SR_c, SR_s);
-        return _fex;
-}
-
-/* Test data class long double */
-static int emu_tcxb (struct pt_regs *regs, int rx, long val) {
-        FP_DECL_Q(QA);
-	mathemu_ldcv cvt;
-	int bit;
-
-        cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
-        cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
-        FP_UNPACK_RAW_QP(QA, &cvt.ld);
-	switch (QA_e) {
-	default:
-		bit = 8;		/* normalized number */
-		break;
-	case 0:
-		if (_FP_FRAC_ZEROP_4(QA))
-			bit = 10;	/* zero */
-		else
-			bit = 6;	/* denormalized number */
-		break;
-	case _FP_EXPMAX_Q:
-		if (_FP_FRAC_ZEROP_4(QA))
-			bit = 4;	/* infinity */
-		else if (_FP_FRAC_HIGH_RAW_Q(QA) & _FP_QNANBIT_Q)
-			bit = 2;	/* quiet NAN */
-		else
-			bit = 0;	/* signaling NAN */
-		break;
-	}
-	if (!QA_s)
-		bit++;
-	emu_set_CC(regs, ((__u32) val >> bit) & 1);
-        return 0;
-}
-
-/* Test data class double */
-static int emu_tcdb (struct pt_regs *regs, int rx, long val) {
-        FP_DECL_D(DA);
-	int bit;
-
-        FP_UNPACK_RAW_DP(DA, &current->thread.fp_regs.fprs[rx].d);
-	switch (DA_e) {
-	default:
-		bit = 8;		/* normalized number */
-		break;
-	case 0:
-		if (_FP_FRAC_ZEROP_2(DA))
-			bit = 10;	/* zero */
-		else
-			bit = 6;	/* denormalized number */
-		break;
-	case _FP_EXPMAX_D:
-		if (_FP_FRAC_ZEROP_2(DA))
-			bit = 4;	/* infinity */
-		else if (_FP_FRAC_HIGH_RAW_D(DA) & _FP_QNANBIT_D)
-			bit = 2;	/* quiet NAN */
-		else
-			bit = 0;	/* signaling NAN */
-		break;
-	}
-	if (!DA_s)
-		bit++;
-	emu_set_CC(regs, ((__u32) val >> bit) & 1);
-        return 0;
-}
-
-/* Test data class float */
-static int emu_tceb (struct pt_regs *regs, int rx, long val) {
-        FP_DECL_S(SA);
-	int bit;
-
-        FP_UNPACK_RAW_SP(SA, &current->thread.fp_regs.fprs[rx].f);
-	switch (SA_e) {
-	default:
-		bit = 8;		/* normalized number */
-		break;
-	case 0:
-		if (_FP_FRAC_ZEROP_1(SA))
-			bit = 10;	/* zero */
-		else
-			bit = 6;	/* denormalized number */
-		break;
-	case _FP_EXPMAX_S:
-		if (_FP_FRAC_ZEROP_1(SA))
-			bit = 4;	/* infinity */
-		else if (_FP_FRAC_HIGH_RAW_S(SA) & _FP_QNANBIT_S)
-			bit = 2;	/* quiet NAN */
-		else
-			bit = 0;	/* signaling NAN */
-		break;
-	}
-	if (!SA_s)
-		bit++;
-	emu_set_CC(regs, ((__u32) val >> bit) & 1);
-        return 0;
-}
-
-static inline void emu_load_regd(int reg) {
-	if ((reg&9) != 0)	/* test if reg in {0,2,4,6} */
-                return;
-	asm volatile(		/* load reg from fp_regs.fprs[reg] */
-		"	bras	1,0f\n"
-		"	ld	0,0(%1)\n"
-		"0:	ex	%0,0(1)"
-		: /* no output */
-		: "a" (reg<<4),"a" (&current->thread.fp_regs.fprs[reg].d)
-		: "1");
-}
-
-static inline void emu_load_rege(int reg) {
-	if ((reg&9) != 0)	/* test if reg in {0,2,4,6} */
-                return;
-	asm volatile(		/* load reg from fp_regs.fprs[reg] */
-		"	bras	1,0f\n"
-		"	le	0,0(%1)\n"
-		"0:	ex	%0,0(1)"
-		: /* no output */
-		: "a" (reg<<4), "a" (&current->thread.fp_regs.fprs[reg].f)
-		: "1");
-}
-
-static inline void emu_store_regd(int reg) {
-	if ((reg&9) != 0)	/* test if reg in {0,2,4,6} */
-                return;
-	asm volatile(		/* store reg to fp_regs.fprs[reg] */
-		"	bras	1,0f\n"
-		"	std	0,0(%1)\n"
-		"0:	ex	%0,0(1)"
-		: /* no output */
-		: "a" (reg<<4), "a" (&current->thread.fp_regs.fprs[reg].d)
-		: "1");
-}
-
-
-static inline void emu_store_rege(int reg) {
-	if ((reg&9) != 0)	/* test if reg in {0,2,4,6} */
-                return;
-	asm volatile(		/* store reg to fp_regs.fprs[reg] */
-		"	bras	1,0f\n"
-		"	ste	0,0(%1)\n"
-		"0:	ex	%0,0(1)"
-		: /* no output */
-		: "a" (reg<<4), "a" (&current->thread.fp_regs.fprs[reg].f)
-		: "1");
-}
-
-int math_emu_b3(__u8 *opcode, struct pt_regs * regs) {
-        int _fex = 0;
-        static const __u8 format_table[256] = {
-                [0x00] = 0x03,[0x01] = 0x03,[0x02] = 0x03,[0x03] = 0x03,
-		[0x04] = 0x0f,[0x05] = 0x0d,[0x06] = 0x0e,[0x07] = 0x0d,
-		[0x08] = 0x03,[0x09] = 0x03,[0x0a] = 0x03,[0x0b] = 0x03,
-                [0x0c] = 0x0f,[0x0d] = 0x03,[0x0e] = 0x06,[0x0f] = 0x06,
-		[0x10] = 0x02,[0x11] = 0x02,[0x12] = 0x02,[0x13] = 0x02,
-		[0x14] = 0x03,[0x15] = 0x02,[0x16] = 0x01,[0x17] = 0x03,
-                [0x18] = 0x02,[0x19] = 0x02,[0x1a] = 0x02,[0x1b] = 0x02,
-		[0x1c] = 0x02,[0x1d] = 0x02,[0x1e] = 0x05,[0x1f] = 0x05,
-		[0x40] = 0x01,[0x41] = 0x01,[0x42] = 0x01,[0x43] = 0x01,
-                [0x44] = 0x12,[0x45] = 0x0d,[0x46] = 0x11,[0x47] = 0x04,
-		[0x48] = 0x01,[0x49] = 0x01,[0x4a] = 0x01,[0x4b] = 0x01,
-		[0x4c] = 0x01,[0x4d] = 0x01,[0x53] = 0x06,[0x57] = 0x06,
-                [0x5b] = 0x05,[0x5f] = 0x05,[0x84] = 0x13,[0x8c] = 0x13,
-		[0x94] = 0x09,[0x95] = 0x08,[0x96] = 0x07,[0x98] = 0x0c,
-		[0x99] = 0x0b,[0x9a] = 0x0a
-        };
-        static const void *jump_table[256]= {
-                [0x00] = emu_lpebr,[0x01] = emu_lnebr,[0x02] = emu_ltebr,
-                [0x03] = emu_lcebr,[0x04] = emu_ldebr,[0x05] = emu_lxdbr,
-                [0x06] = emu_lxebr,[0x07] = emu_mxdbr,[0x08] = emu_kebr,
-                [0x09] = emu_cebr, [0x0a] = emu_aebr, [0x0b] = emu_sebr,
-                [0x0c] = emu_mdebr,[0x0d] = emu_debr, [0x0e] = emu_maebr,
-                [0x0f] = emu_msebr,[0x10] = emu_lpdbr,[0x11] = emu_lndbr, 
-                [0x12] = emu_ltdbr,[0x13] = emu_lcdbr,[0x14] = emu_sqebr,
-                [0x15] = emu_sqdbr,[0x16] = emu_sqxbr,[0x17] = emu_meebr,
-                [0x18] = emu_kdbr, [0x19] = emu_cdbr, [0x1a] = emu_adbr,
-                [0x1b] = emu_sdbr, [0x1c] = emu_mdbr, [0x1d] = emu_ddbr,  
-                [0x1e] = emu_madbr,[0x1f] = emu_msdbr,[0x40] = emu_lpxbr,
-                [0x41] = emu_lnxbr,[0x42] = emu_ltxbr,[0x43] = emu_lcxbr,
-                [0x44] = emu_ledbr,[0x45] = emu_ldxbr,[0x46] = emu_lexbr,
-                [0x47] = emu_fixbr,[0x48] = emu_kxbr, [0x49] = emu_cxbr,  
-                [0x4a] = emu_axbr, [0x4b] = emu_sxbr, [0x4c] = emu_mxbr,
-                [0x4d] = emu_dxbr, [0x53] = emu_diebr,[0x57] = emu_fiebr,
-                [0x5b] = emu_didbr,[0x5f] = emu_fidbr,[0x84] = emu_sfpc,
-                [0x8c] = emu_efpc, [0x94] = emu_cefbr,[0x95] = emu_cdfbr, 
-                [0x96] = emu_cxfbr,[0x98] = emu_cfebr,[0x99] = emu_cfdbr,
-                [0x9a] = emu_cfxbr
-        };
-
-        switch (format_table[opcode[1]]) {
-        case 1: /* RRE format, long double operation */
-                if (opcode[3] & 0x22)
-			return SIGILL;
-                emu_store_regd((opcode[3] >> 4) & 15);
-                emu_store_regd(((opcode[3] >> 4) & 15) + 2);
-                emu_store_regd(opcode[3] & 15);
-                emu_store_regd((opcode[3] & 15) + 2);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *,int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(((opcode[3] >> 4) & 15) + 2);
-                emu_load_regd(opcode[3] & 15);
-                emu_load_regd((opcode[3] & 15) + 2);
-		break;
-        case 2: /* RRE format, double operation */
-                emu_store_regd((opcode[3] >> 4) & 15);
-                emu_store_regd(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(opcode[3] & 15);
-		break;
-        case 3: /* RRE format, float operation */
-                emu_store_rege((opcode[3] >> 4) & 15);
-                emu_store_rege(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_rege((opcode[3] >> 4) & 15);
-                emu_load_rege(opcode[3] & 15);
-		break;
-        case 4: /* RRF format, long double operation */
-                if (opcode[3] & 0x22)
-			return SIGILL;
-                emu_store_regd((opcode[3] >> 4) & 15);
-                emu_store_regd(((opcode[3] >> 4) & 15) + 2);
-                emu_store_regd(opcode[3] & 15);
-                emu_store_regd((opcode[3] & 15) + 2);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(((opcode[3] >> 4) & 15) + 2);
-                emu_load_regd(opcode[3] & 15);
-                emu_load_regd((opcode[3] & 15) + 2);
-		break;
-        case 5: /* RRF format, double operation */
-                emu_store_regd((opcode[2] >> 4) & 15);
-                emu_store_regd((opcode[3] >> 4) & 15);
-                emu_store_regd(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
-                emu_load_regd((opcode[2] >> 4) & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(opcode[3] & 15);
-		break;
-        case 6: /* RRF format, float operation */
-                emu_store_rege((opcode[2] >> 4) & 15);
-                emu_store_rege((opcode[3] >> 4) & 15);
-                emu_store_rege(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
-                emu_load_rege((opcode[2] >> 4) & 15);
-                emu_load_rege((opcode[3] >> 4) & 15);
-                emu_load_rege(opcode[3] & 15);
-		break;
-        case 7: /* RRE format, cxfbr instruction */
-                /* call the emulation function */
-                if (opcode[3] & 0x20)
-			return SIGILL;
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(((opcode[3] >> 4) & 15) + 2);
-		break;
-        case 8: /* RRE format, cdfbr instruction */
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-		break;
-        case 9: /* RRE format, cefbr instruction */
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_rege((opcode[3] >> 4) & 15);
-		break;
-        case 10: /* RRF format, cfxbr instruction */
-                if ((opcode[2] & 128) == 128 || (opcode[2] & 96) == 32)
-			/* mask of { 2,3,8-15 } is invalid */
-			return SIGILL;
-                if (opcode[3] & 2)
-			return SIGILL;
-                emu_store_regd(opcode[3] & 15);
-                emu_store_regd((opcode[3] & 15) + 2);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
-		break;
-        case 11: /* RRF format, cfdbr instruction */
-                if ((opcode[2] & 128) == 128 || (opcode[2] & 96) == 32)
-			/* mask of { 2,3,8-15 } is invalid */
-			return SIGILL;
-                emu_store_regd(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
-		break;
-        case 12: /* RRF format, cfebr instruction */
-                if ((opcode[2] & 128) == 128 || (opcode[2] & 96) == 32)
-			/* mask of { 2,3,8-15 } is invalid */
-			return SIGILL;
-                emu_store_rege(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
-		break;
-        case 13: /* RRE format, ldxbr & mdxbr instruction */
-                /* double store but long double load */
-                if (opcode[3] & 0x20)
-			return SIGILL;
-                emu_store_regd((opcode[3] >> 4) & 15);
-                emu_store_regd(opcode[3]  & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(((opcode[3] >> 4) & 15) + 2);
-		break;
-        case 14: /* RRE format, ldxbr & mdxbr instruction */
-                /* float store but long double load */
-                if (opcode[3] & 0x20)
-			return SIGILL;
-                emu_store_rege((opcode[3] >> 4) & 15);
-                emu_store_rege(opcode[3]  & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                emu_load_regd(((opcode[3] >> 4) & 15) + 2);
-		break;
-        case 15: /* RRE format, ldebr & mdebr instruction */
-                /* float store but double load */
-                emu_store_rege((opcode[3] >> 4) & 15);
-                emu_store_rege(opcode[3]  & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-		break;
-        case 16: /* RRE format, ldxbr instruction */
-                /* long double store but double load */
-                if (opcode[3] & 2)
-			return SIGILL;
-                emu_store_regd(opcode[3] & 15);
-                emu_store_regd((opcode[3] & 15) + 2);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_regd((opcode[3] >> 4) & 15);
-                break;
-        case 17: /* RRE format, ldxbr instruction */
-                /* long double store but float load */
-                if (opcode[3] & 2)
-			return SIGILL;
-                emu_store_regd(opcode[3] & 15);
-                emu_store_regd((opcode[3] & 15) + 2);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_rege((opcode[3] >> 4) & 15);
-                break;
-        case 18: /* RRE format, ledbr instruction */
-                /* double store but float load */
-                emu_store_regd(opcode[3] & 15);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                emu_load_rege((opcode[3] >> 4) & 15);
-                break;
-        case 19: /* RRE format, efpc & sfpc instruction */
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, int))
-			jump_table[opcode[1]])
-                        (regs, opcode[3] >> 4, opcode[3] & 15);
-                break;
-        default: /* invalid operation */
-                return SIGILL;
-        }
-	if (_fex != 0) {
-		current->thread.fp_regs.fpc |= _fex;
-		if (current->thread.fp_regs.fpc & (_fex << 8))
-			return SIGFPE;
-	}
-	return 0;
-}
-
-static void* calc_addr(struct pt_regs *regs, int rx, int rb, int disp)
-{
-        addr_t addr;
-
-        rx &= 15;
-        rb &= 15;
-        addr = disp & 0xfff;
-        addr += (rx != 0) ? regs->gprs[rx] : 0;  /* + index */
-        addr += (rb != 0) ? regs->gprs[rb] : 0;  /* + base  */
-        return (void*) addr;
-}
-    
-int math_emu_ed(__u8 *opcode, struct pt_regs * regs) {
-        int _fex = 0;
-
-        static const __u8 format_table[256] = {
-                [0x04] = 0x06,[0x05] = 0x05,[0x06] = 0x07,[0x07] = 0x05,
-		[0x08] = 0x02,[0x09] = 0x02,[0x0a] = 0x02,[0x0b] = 0x02,
-		[0x0c] = 0x06,[0x0d] = 0x02,[0x0e] = 0x04,[0x0f] = 0x04,
-                [0x10] = 0x08,[0x11] = 0x09,[0x12] = 0x0a,[0x14] = 0x02,
-		[0x15] = 0x01,[0x17] = 0x02,[0x18] = 0x01,[0x19] = 0x01,
-		[0x1a] = 0x01,[0x1b] = 0x01,[0x1c] = 0x01,[0x1d] = 0x01,
-                [0x1e] = 0x03,[0x1f] = 0x03,
-        };
-        static const void *jump_table[]= {
-                [0x04] = emu_ldeb,[0x05] = emu_lxdb,[0x06] = emu_lxeb,
-                [0x07] = emu_mxdb,[0x08] = emu_keb, [0x09] = emu_ceb,
-                [0x0a] = emu_aeb, [0x0b] = emu_seb, [0x0c] = emu_mdeb,
-                [0x0d] = emu_deb, [0x0e] = emu_maeb,[0x0f] = emu_mseb,
-                [0x10] = emu_tceb,[0x11] = emu_tcdb,[0x12] = emu_tcxb,
-                [0x14] = emu_sqeb,[0x15] = emu_sqdb,[0x17] = emu_meeb,
-                [0x18] = emu_kdb, [0x19] = emu_cdb, [0x1a] = emu_adb,
-                [0x1b] = emu_sdb, [0x1c] = emu_mdb, [0x1d] = emu_ddb,
-                [0x1e] = emu_madb,[0x1f] = emu_msdb
-        };
-
-        switch (format_table[opcode[5]]) {
-        case 1: /* RXE format, double constant */ {
-                __u64 *dxb, temp;
-                __u32 opc;
-
-                emu_store_regd((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_copy_from_user(&temp, dxb, 8);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, double *))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (double *) &temp);
-                emu_load_regd((opcode[1] >> 4) & 15);
-                break;
-        }
-        case 2: /* RXE format, float constant */ {
-                __u32 *dxb, temp;
-                __u32 opc;
-
-                emu_store_rege((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_get_user(temp, dxb);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, float *))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (float *) &temp);
-                emu_load_rege((opcode[1] >> 4) & 15);
-                break;
-        }
-        case 3: /* RXF format, double constant */ {
-                __u64 *dxb, temp;
-                __u32 opc;
-
-                emu_store_regd((opcode[1] >> 4) & 15);
-                emu_store_regd((opcode[4] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_copy_from_user(&temp, dxb, 8);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, double *, int))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (double *) &temp, opcode[4] >> 4);
-                emu_load_regd((opcode[1] >> 4) & 15);
-                break;
-        }
-        case 4: /* RXF format, float constant */ {
-                __u32 *dxb, temp;
-                __u32 opc;
-
-                emu_store_rege((opcode[1] >> 4) & 15);
-                emu_store_rege((opcode[4] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_get_user(temp, dxb);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, float *, int))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (float *) &temp, opcode[4] >> 4);
-                emu_load_rege((opcode[4] >> 4) & 15);
-                break;
-        }
-        case 5: /* RXE format, double constant */
-                /* store double and load long double */ 
-        {
-                __u64 *dxb, temp;
-                __u32 opc;
-                if ((opcode[1] >> 4) & 0x20)
-			return SIGILL;
-                emu_store_regd((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_copy_from_user(&temp, dxb, 8);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, double *))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (double *) &temp);
-                emu_load_regd((opcode[1] >> 4) & 15);
-                emu_load_regd(((opcode[1] >> 4) & 15) + 2);
-                break;
-        }
-        case 6: /* RXE format, float constant */
-                /* store float and load double */ 
-        {
-                __u32 *dxb, temp;
-                __u32 opc;
-                emu_store_rege((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_get_user(temp, dxb);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, float *))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (float *) &temp);
-                emu_load_regd((opcode[1] >> 4) & 15);
-                break;
-        }
-        case 7: /* RXE format, float constant */
-                /* store float and load long double */ 
-        {
-                __u32 *dxb, temp;
-                __u32 opc;
-                if ((opcode[1] >> 4) & 0x20)
-			return SIGILL;
-                emu_store_rege((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                mathemu_get_user(temp, dxb);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, float *))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, (float *) &temp);
-                emu_load_regd((opcode[1] >> 4) & 15);
-                emu_load_regd(((opcode[1] >> 4) & 15) + 2);
-                break;
-        }
-        case 8: /* RXE format, RX address used as int value */ {
-                __u64 dxb;
-                __u32 opc;
-
-                emu_store_rege((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u64) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, long))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, dxb);
-                break;
-        }
-        case 9: /* RXE format, RX address used as int value */ {
-                __u64 dxb;
-                __u32 opc;
-
-                emu_store_regd((opcode[1] >> 4) & 15);
-                opc = *((__u32 *) opcode);
-                dxb = (__u64) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, long))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, dxb);
-                break;
-        }
-        case 10: /* RXE format, RX address used as int value */ {
-                __u64 dxb;
-                __u32 opc;
-
-                if ((opcode[1] >> 4) & 2)
-			return SIGILL;
-                emu_store_regd((opcode[1] >> 4) & 15);
-                emu_store_regd(((opcode[1] >> 4) & 15) + 2);
-                opc = *((__u32 *) opcode);
-                dxb = (__u64) calc_addr(regs, opc >> 16, opc >> 12, opc);
-                /* call the emulation function */
-                _fex = ((int (*)(struct pt_regs *, int, long))
-			jump_table[opcode[5]])
-                        (regs, opcode[1] >> 4, dxb);
-                break;
-        }
-        default: /* invalid operation */
-                return SIGILL;
-        }
-	if (_fex != 0) {
-		current->thread.fp_regs.fpc |= _fex;
-		if (current->thread.fp_regs.fpc & (_fex << 8))
-			return SIGFPE;
-	}
-	return 0;
-}
-
-/*
- * Emulate LDR Rx,Ry with Rx or Ry not in {0, 2, 4, 6}
- */
-int math_emu_ldr(__u8 *opcode) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        __u16 opc = *((__u16 *) opcode);
-
-        if ((opc & 0x90) == 0) {           /* test if rx in {0,2,4,6} */
-                /* we got an exception therefore ry can't be in {0,2,4,6} */
-		asm volatile(		/* load rx from fp_regs.fprs[ry] */
-			"	bras	1,0f\n"
-			"	ld	0,0(%1)\n"
-			"0:	ex	%0,0(1)"
-			: /* no output */
-			: "a" (opc & 0xf0), "a" (&fp_regs->fprs[opc & 0xf].d)
-			: "1");
-        } else if ((opc & 0x9) == 0) {     /* test if ry in {0,2,4,6} */
-		asm volatile (		/* store ry to fp_regs.fprs[rx] */
-			"	bras	1,0f\n"
-			"	std	0,0(%1)\n"
-			"0:	ex	%0,0(1)"
-			: /* no output */
-			: "a" ((opc & 0xf) << 4),
-			  "a" (&fp_regs->fprs[(opc & 0xf0)>>4].d)
-			: "1");
-        } else  /* move fp_regs.fprs[ry] to fp_regs.fprs[rx] */
-                fp_regs->fprs[(opc & 0xf0) >> 4] = fp_regs->fprs[opc & 0xf];
-	return 0;
-}
-
-/*
- * Emulate LER Rx,Ry with Rx or Ry not in {0, 2, 4, 6}
- */
-int math_emu_ler(__u8 *opcode) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        __u16 opc = *((__u16 *) opcode);
-
-        if ((opc & 0x90) == 0) {           /* test if rx in {0,2,4,6} */
-                /* we got an exception therefore ry can't be in {0,2,4,6} */
-		asm volatile(		/* load rx from fp_regs.fprs[ry] */
-			"	bras	1,0f\n"
-			"	le	0,0(%1)\n"
-			"0:	ex	%0,0(1)"
-			: /* no output */
-			: "a" (opc & 0xf0), "a" (&fp_regs->fprs[opc & 0xf].f)
-			: "1");
-        } else if ((opc & 0x9) == 0) {     /* test if ry in {0,2,4,6} */
-		asm volatile(		/* store ry to fp_regs.fprs[rx] */
-			"	bras	1,0f\n"
-			"	ste	0,0(%1)\n"
-			"0:	ex	%0,0(1)"
-			: /* no output */
-			: "a" ((opc & 0xf) << 4),
-			  "a" (&fp_regs->fprs[(opc & 0xf0) >> 4].f)
-			: "1");
-        } else  /* move fp_regs.fprs[ry] to fp_regs.fprs[rx] */
-                fp_regs->fprs[(opc & 0xf0) >> 4] = fp_regs->fprs[opc & 0xf];
-	return 0;
-}
-
-/*
- * Emulate LD R,D(X,B) with R not in {0, 2, 4, 6}
- */
-int math_emu_ld(__u8 *opcode, struct pt_regs * regs) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        __u32 opc = *((__u32 *) opcode);
-        __u64 *dxb;
-
-        dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-        mathemu_copy_from_user(&fp_regs->fprs[(opc >> 20) & 0xf].d, dxb, 8);
-	return 0;
-}
-
-/*
- * Emulate LE R,D(X,B) with R not in {0, 2, 4, 6}
- */
-int math_emu_le(__u8 *opcode, struct pt_regs * regs) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        __u32 opc = *((__u32 *) opcode);
-        __u32 *mem, *dxb;
-
-        dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-        mem = (__u32 *) (&fp_regs->fprs[(opc >> 20) & 0xf].f);
-        mathemu_get_user(mem[0], dxb);
-	return 0;
-}
-
-/*
- * Emulate STD R,D(X,B) with R not in {0, 2, 4, 6}
- */
-int math_emu_std(__u8 *opcode, struct pt_regs * regs) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        __u32 opc = *((__u32 *) opcode);
-        __u64 *dxb;
-
-        dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-        mathemu_copy_to_user(dxb, &fp_regs->fprs[(opc >> 20) & 0xf].d, 8);
-	return 0;
-}
-
-/*
- * Emulate STE R,D(X,B) with R not in {0, 2, 4, 6}
- */
-int math_emu_ste(__u8 *opcode, struct pt_regs * regs) {
-        s390_fp_regs *fp_regs = &current->thread.fp_regs;
-        __u32 opc = *((__u32 *) opcode);
-        __u32 *mem, *dxb;
-
-        dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
-        mem = (__u32 *) (&fp_regs->fprs[(opc >> 20) & 0xf].f);
-        mathemu_put_user(mem[0], dxb);
-	return 0;
-}
-
-/*
- * Emulate LFPC D(B)
- */
-int math_emu_lfpc(__u8 *opcode, struct pt_regs *regs) {
-        __u32 opc = *((__u32 *) opcode);
-        __u32 *dxb, temp;
-
-        dxb= (__u32 *) calc_addr(regs, 0, opc>>12, opc);
-        mathemu_get_user(temp, dxb);
-        if ((temp & ~FPC_VALID_MASK) != 0)
-		return SIGILL;
-	current->thread.fp_regs.fpc = temp;
-        return 0;
-}
-
-/*
- * Emulate STFPC D(B)
- */
-int math_emu_stfpc(__u8 *opcode, struct pt_regs *regs) {
-        __u32 opc = *((__u32 *) opcode);
-        __u32 *dxb;
-
-        dxb= (__u32 *) calc_addr(regs, 0, opc>>12, opc);
-        mathemu_put_user(current->thread.fp_regs.fpc, dxb);
-        return 0;
-}
-
-/*
- * Emulate SRNM D(B)
- */
-int math_emu_srnm(__u8 *opcode, struct pt_regs *regs) {
-        __u32 opc = *((__u32 *) opcode);
-        __u32 temp;
-
-        temp = calc_addr(regs, 0, opc>>12, opc);
-	current->thread.fp_regs.fpc &= ~3;
-        current->thread.fp_regs.fpc |= (temp & 3);
-        return 0;
-}
-
-/* broken compiler ... */
-long long
-__negdi2 (long long u)
-{
-
-  union lll {
-    long long ll;
-    long s[2];
-  };
-
-  union lll w,uu;
-
-  uu.ll = u;
-
-  w.s[1] = -uu.s[1];
-  w.s[0] = -uu.s[0] - ((int) w.s[1] != 0);
-
-  return w.ll;
-}

arch/s390/mm/dump_pagetables.c

@@ -18,9 +18,7 @@ enum address_markers_idx {
 	KERNEL_END_NR,
 	VMEMMAP_NR,
 	VMALLOC_NR,
-#ifdef CONFIG_64BIT
 	MODULES_NR,
-#endif
 };
 
 static struct addr_marker address_markers[] = {
@@ -29,9 +27,7 @@ static struct addr_marker address_markers[] = {
 	[KERNEL_END_NR]	  = {(unsigned long)&_end, "Kernel Image End"},
 	[VMEMMAP_NR]	  = {0, "vmemmap Area"},
 	[VMALLOC_NR]	  = {0, "vmalloc Area"},
-#ifdef CONFIG_64BIT
 	[MODULES_NR]	  = {0, "Modules Area"},
-#endif
 	{ -1, NULL }
 };
 
@@ -127,12 +123,6 @@ static void walk_pte_level(struct seq_file *m, struct pg_state *st,
 	}
 }
 
-#ifdef CONFIG_64BIT
-#define _PMD_PROT_MASK _SEGMENT_ENTRY_PROTECT
-#else
-#define _PMD_PROT_MASK 0
-#endif
-
 static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
 			   pud_t *pud, unsigned long addr)
 {
@@ -145,7 +135,7 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
 		pmd = pmd_offset(pud, addr);
 		if (!pmd_none(*pmd)) {
 			if (pmd_large(*pmd)) {
-				prot = pmd_val(*pmd) & _PMD_PROT_MASK;
+				prot = pmd_val(*pmd) & _SEGMENT_ENTRY_PROTECT;
 				note_page(m, st, prot, 3);
 			} else
 				walk_pte_level(m, st, pmd, addr);
@@ -155,12 +145,6 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
 	}
 }
 
-#ifdef CONFIG_64BIT
-#define _PUD_PROT_MASK _REGION3_ENTRY_RO
-#else
-#define _PUD_PROT_MASK 0
-#endif
-
 static void walk_pud_level(struct seq_file *m, struct pg_state *st,
 			   pgd_t *pgd, unsigned long addr)
 {
@@ -173,7 +157,7 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st,
 		pud = pud_offset(pgd, addr);
 		if (!pud_none(*pud))
 			if (pud_large(*pud)) {
-				prot = pud_val(*pud) & _PUD_PROT_MASK;
+				prot = pud_val(*pud) & _REGION3_ENTRY_RO;
 				note_page(m, st, prot, 2);
 			} else
 				walk_pmd_level(m, st, pud, addr);
@@ -230,13 +214,9 @@ static int pt_dump_init(void)
 	 * kernel ASCE. We need this to keep the page table walker functions
 	 * from accessing non-existent entries.
 	 */
-#ifdef CONFIG_32BIT
-	max_addr = 1UL << 31;
-#else
 	max_addr = (S390_lowcore.kernel_asce & _REGION_ENTRY_TYPE_MASK) >> 2;
 	max_addr = 1UL << (max_addr * 11 + 31);
 	address_markers[MODULES_NR].start_address = MODULES_VADDR;
-#endif
 	address_markers[VMEMMAP_NR].start_address = (unsigned long) vmemmap;
 	address_markers[VMALLOC_NR].start_address = VMALLOC_START;
 	debugfs_create_file("kernel_page_tables", 0400, NULL, NULL, &ptdump_fops);

arch/s390/mm/extmem.c

@@ -51,7 +51,6 @@ struct qout64 {
 	struct qrange range[6];
 };
 
-#ifdef CONFIG_64BIT
 struct qrange_old {
 	unsigned int start; /* last byte type */
 	unsigned int end;   /* last byte reserved */
@@ -65,7 +64,6 @@ struct qout64_old {
 	int segrcnt;
 	struct qrange_old range[6];
 };
-#endif
 
 struct qin64 {
 	char qopcode;
@@ -103,7 +101,6 @@ static int scode_set;
 static int
 dcss_set_subcodes(void)
 {
-#ifdef CONFIG_64BIT
 	char *name = kmalloc(8 * sizeof(char), GFP_KERNEL | GFP_DMA);
 	unsigned long rx, ry;
 	int rc;
@@ -135,7 +132,6 @@ dcss_set_subcodes(void)
 		segext_scode = DCSS_SEGEXTX;
 		return 0;
 	}
-#endif
 	/* Diag x'64' new subcodes are not supported, set to old subcodes */
 	loadshr_scode = DCSS_LOADNOLY;
 	loadnsr_scode = DCSS_LOADNSR;
@@ -208,7 +204,6 @@ dcss_diag(int *func, void *parameter,
 	rx = (unsigned long) parameter;
 	ry = (unsigned long) *func;
 
-#ifdef CONFIG_64BIT
 	/* 64-bit Diag x'64' new subcode, keep in 64-bit addressing mode */
 	if (*func > DCSS_SEGEXT)
 		asm volatile(
@@ -225,13 +220,6 @@ dcss_diag(int *func, void *parameter,
 			"	ipm	%2\n"
 			"	srl	%2,28\n"
 			: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");
-#else
-	asm volatile(
-		"	diag	%0,%1,0x64\n"
-		"	ipm	%2\n"
-		"	srl	%2,28\n"
-		: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");
-#endif
 	*ret1 = rx;
 	*ret2 = ry;
 	return rc;
@@ -281,7 +269,6 @@ query_segment_type (struct dcss_segment *seg)
 		goto out_free;
 	}
 
-#ifdef CONFIG_64BIT
 	/* Only old format of output area of Diagnose x'64' is supported,
 	   copy data for the new format. */
 	if (segext_scode == DCSS_SEGEXT) {
@@ -307,7 +294,6 @@ query_segment_type (struct dcss_segment *seg)
 		}
 		kfree(qout_old);
 	}
-#endif
 	if (qout->segcnt > 6) {
 		rc = -EOPNOTSUPP;
 		goto out_free;

arch/s390/mm/fault.c

@@ -36,15 +36,9 @@
 #include <asm/facility.h>
 #include "../kernel/entry.h"
 
-#ifndef CONFIG_64BIT
-#define __FAIL_ADDR_MASK 0x7ffff000
-#define __SUBCODE_MASK 0x0200
-#define __PF_RES_FIELD 0ULL
-#else /* CONFIG_64BIT */
 #define __FAIL_ADDR_MASK -4096L
 #define __SUBCODE_MASK 0x0600
 #define __PF_RES_FIELD 0x8000000000000000ULL
-#endif /* CONFIG_64BIT */
 
 #define VM_FAULT_BADCONTEXT	0x010000
 #define VM_FAULT_BADMAP		0x020000
@@ -54,7 +48,6 @@
 
 static unsigned long store_indication __read_mostly;
 
-#ifdef CONFIG_64BIT
 static int __init fault_init(void)
 {
 	if (test_facility(75))
@@ -62,7 +55,6 @@ static int __init fault_init(void)
 	return 0;
 }
 early_initcall(fault_init);
-#endif
 
 static inline int notify_page_fault(struct pt_regs *regs)
 {
@@ -133,7 +125,6 @@ static int bad_address(void *p)
 	return probe_kernel_address((unsigned long *)p, dummy);
 }
 
-#ifdef CONFIG_64BIT
 static void dump_pagetable(unsigned long asce, unsigned long address)
 {
 	unsigned long *table = __va(asce & PAGE_MASK);
@@ -187,33 +178,6 @@ bad:
 	pr_cont("BAD\n");
 }
 
-#else /* CONFIG_64BIT */
-
-static void dump_pagetable(unsigned long asce, unsigned long address)
-{
-	unsigned long *table = __va(asce & PAGE_MASK);
-
-	pr_alert("AS:%08lx ", asce);
-	table = table + ((address >> 20) & 0x7ff);
-	if (bad_address(table))
-		goto bad;
-	pr_cont("S:%08lx ", *table);
-	if (*table & _SEGMENT_ENTRY_INVALID)
-		goto out;
-	table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
-	table = table + ((address >> 12) & 0xff);
-	if (bad_address(table))
-		goto bad;
-	pr_cont("P:%08lx ", *table);
-out:
-	pr_cont("\n");
-	return;
-bad:
-	pr_cont("BAD\n");
-}
-
-#endif /* CONFIG_64BIT */
-
 static void dump_fault_info(struct pt_regs *regs)
 {
 	unsigned long asce;

arch/s390/mm/gup.c

@@ -106,11 +106,9 @@ static inline int gup_pmd_range(pud_t *pudp, pud_t pud, unsigned long addr,
 	pmd_t *pmdp, pmd;
 
 	pmdp = (pmd_t *) pudp;
-#ifdef CONFIG_64BIT
 	if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3)
 		pmdp = (pmd_t *) pud_deref(pud);
 	pmdp += pmd_index(addr);
-#endif
 	do {
 		pmd = *pmdp;
 		barrier();
@@ -145,11 +143,9 @@ static inline int gup_pud_range(pgd_t *pgdp, pgd_t pgd, unsigned long addr,
 	pud_t *pudp, pud;
 
 	pudp = (pud_t *) pgdp;
-#ifdef CONFIG_64BIT
 	if ((pgd_val(pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2)
 		pudp = (pud_t *) pgd_deref(pgd);
 	pudp += pud_index(addr);
-#endif
 	do {
 		pud = *pudp;
 		barrier();

arch/s390/mm/init.c

@@ -105,7 +105,6 @@ void __init paging_init(void)
 	unsigned long pgd_type, asce_bits;
 
 	init_mm.pgd = swapper_pg_dir;
-#ifdef CONFIG_64BIT
 	if (VMALLOC_END > (1UL << 42)) {
 		asce_bits = _ASCE_TYPE_REGION2 | _ASCE_TABLE_LENGTH;
 		pgd_type = _REGION2_ENTRY_EMPTY;
@@ -113,10 +112,6 @@ void __init paging_init(void)
 		asce_bits = _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;
 		pgd_type = _REGION3_ENTRY_EMPTY;
 	}
-#else
-	asce_bits = _ASCE_TABLE_LENGTH;
-	pgd_type = _SEGMENT_ENTRY_EMPTY;
-#endif
 	S390_lowcore.kernel_asce = (__pa(init_mm.pgd) & PAGE_MASK) | asce_bits;
 	clear_table((unsigned long *) init_mm.pgd, pgd_type,
 		    sizeof(unsigned long)*2048);

arch/s390/mm/maccess.c

@@ -1,7 +1,7 @@
 /*
  * Access kernel memory without faulting -- s390 specific implementation.
  *
- * Copyright IBM Corp. 2009
+ * Copyright IBM Corp. 2009, 2015
  *
  *   Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
  *
@@ -16,51 +16,55 @@
 #include <asm/ctl_reg.h>
 #include <asm/io.h>
 
-/*
- * This function writes to kernel memory bypassing DAT and possible
- * write protection. It copies one to four bytes from src to dst
- * using the stura instruction.
- * Returns the number of bytes copied or -EFAULT.
- */
-static long probe_kernel_write_odd(void *dst, const void *src, size_t size)
+static notrace long s390_kernel_write_odd(void *dst, const void *src, size_t size)
 {
-	unsigned long count, aligned;
-	int offset, mask;
-	int rc = -EFAULT;
+	unsigned long aligned, offset, count;
+	char tmp[8];
 
-	aligned = (unsigned long) dst & ~3UL;
-	offset = (unsigned long) dst & 3;
-	count = min_t(unsigned long, 4 - offset, size);
-	mask = (0xf << (4 - count)) & 0xf;
-	mask >>= offset;
+	aligned = (unsigned long) dst & ~7UL;
+	offset = (unsigned long) dst & 7UL;
+	size = min(8UL - offset, size);
+	count = size - 1;
 	asm volatile(
 		"	bras	1,0f\n"
-		"	icm	0,0,0(%3)\n"
-		"0:	l	0,0(%1)\n"
-		"	lra	%1,0(%1)\n"
-		"1:	ex	%2,0(1)\n"
-		"2:	stura	0,%1\n"
-		"	la	%0,0\n"
-		"3:\n"
-		EX_TABLE(0b,3b) EX_TABLE(1b,3b) EX_TABLE(2b,3b)
-		: "+d" (rc), "+a" (aligned)
-		: "a" (mask), "a" (src) : "cc", "memory", "0", "1");
-	return rc ? rc : count;
+		"	mvc	0(1,%4),0(%5)\n"
+		"0:	mvc	0(8,%3),0(%0)\n"
+		"	ex	%1,0(1)\n"
+		"	lg	%1,0(%3)\n"
+		"	lra	%0,0(%0)\n"
+		"	sturg	%1,%0\n"
+		: "+&a" (aligned), "+&a" (count), "=m" (tmp)
+		: "a" (&tmp), "a" (&tmp[offset]), "a" (src)
+		: "cc", "memory", "1");
+	return size;
 }
 
-long probe_kernel_write(void *dst, const void *src, size_t size)
+/*
+ * s390_kernel_write - write to kernel memory bypassing DAT
+ * @dst: destination address
+ * @src: source address
+ * @size: number of bytes to copy
+ *
+ * This function writes to kernel memory bypassing DAT and possible page table
+ * write protection. It writes to the destination using the sturg instruction.
+ * Therefore we have a read-modify-write sequence: the function reads eight
+ * bytes from destination at an eight byte boundary, modifies the bytes
+ * requested and writes the result back in a loop.
+ *
+ * Note: this means that this function may not be called concurrently on
+ *	 several cpus with overlapping words, since this may potentially
+ *	 cause data corruption.
+ */
+void notrace s390_kernel_write(void *dst, const void *src, size_t size)
 {
-	long copied = 0;
+	long copied;
 
 	while (size) {
-		copied = probe_kernel_write_odd(dst, src, size);
-		if (copied < 0)
-			break;
+		copied = s390_kernel_write_odd(dst, src, size);
 		dst += copied;
 		src += copied;
 		size -= copied;
 	}
-	return copied < 0 ? -EFAULT : 0;
 }
 
 static int __memcpy_real(void *dest, void *src, size_t count)

arch/s390/mm/mem_detect.c

@@ -36,10 +36,6 @@ void __init detect_memory_memblock(void)
 	memsize = rzm * rnmax;
 	if (!rzm)
 		rzm = 1ULL << 17;
-	if (IS_ENABLED(CONFIG_32BIT)) {
-		rzm = min(ADDR2G, rzm);
-		memsize = min(ADDR2G, memsize);
-	}
 	max_physmem_end = memsize;
 	addr = 0;
 	/* keep memblock lists close to the kernel */

arch/s390/mm/mmap.c

@@ -32,7 +32,7 @@
 #include <asm/pgalloc.h>
 
 unsigned long mmap_rnd_mask;
-unsigned long mmap_align_mask;
+static unsigned long mmap_align_mask;
 
 static unsigned long stack_maxrandom_size(void)
 {
@@ -177,34 +177,6 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	return addr;
 }
 
-#ifndef CONFIG_64BIT
-
-/*
- * This function, called very early during the creation of a new
- * process VM image, sets up which VM layout function to use:
- */
-void arch_pick_mmap_layout(struct mm_struct *mm)
-{
-	unsigned long random_factor = 0UL;
-
-	if (current->flags & PF_RANDOMIZE)
-		random_factor = arch_mmap_rnd();
-
-	/*
-	 * Fall back to the standard layout if the personality
-	 * bit is set, or if the expected stack growth is unlimited:
-	 */
-	if (mmap_is_legacy()) {
-		mm->mmap_base = mmap_base_legacy(random_factor);
-		mm->get_unmapped_area = arch_get_unmapped_area;
-	} else {
-		mm->mmap_base = mmap_base(random_factor);
-		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
-	}
-}
-
-#else
-
 int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
 {
 	if (is_compat_task() || (TASK_SIZE >= (1UL << 53)))
@@ -314,5 +286,3 @@ static int __init setup_mmap_rnd(void)
 	return 0;
 }
 early_initcall(setup_mmap_rnd);
-
-#endif