Merge branches 'amba', 'devel-stable', 'kexec-for-next' and 'misc' into for-linus

.mailmap

@@ -33,6 +33,7 @@ Björn Steinbrink <B.Steinbrink@gmx.de>
 Brian Avery <b.avery@hp.com>
 Brian King <brking@us.ibm.com>
 Christoph Hellwig <hch@lst.de>
+Christophe Ricard <christophe.ricard@gmail.com>
 Corey Minyard <minyard@acm.org>
 Damian Hobson-Garcia <dhobsong@igel.co.jp>
 David Brownell <david-b@pacbell.net>

Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl

@@ -1,23 +1,18 @@
-What:		/sys/devices/platform/<i2c-demux-name>/cur_master
+What:		/sys/devices/platform/<i2c-demux-name>/available_masters
 Date:		January 2016
 KernelVersion:	4.6
 Contact:	Wolfram Sang <wsa@the-dreams.de>
 Description:
+		Reading the file will give you a list of masters which can be
+		selected for a demultiplexed bus. The format is
+		"<index>:<name>". Example from a Renesas Lager board:
 
-This file selects the active I2C master for a demultiplexed bus.
+		0:/i2c@e6500000 1:/i2c@e6508000
 
-Write 0 there for the first master, 1 for the second etc. Reading the file will
-give you a list with the active master marked. Example from a Renesas Lager
-board:
-
-root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master
-* 0 - /i2c@9
-  1 - /i2c@e6520000
-  2 - /i2c@e6530000
-
-root@Lager:~# echo 2 > /sys/devices/platform/i2c@8/cur_master
-
-root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master
-  0 - /i2c@9
-  1 - /i2c@e6520000
-* 2 - /i2c@e6530000
+What:		/sys/devices/platform/<i2c-demux-name>/current_master
+Date:		January 2016
+KernelVersion:	4.6
+Contact:	Wolfram Sang <wsa@the-dreams.de>
+Description:
+		This file selects/shows the active I2C master for a demultiplexed
+		bus. It uses the <index> value from the file 'available_masters'.

Documentation/devicetree/bindings/arm/l2c2x0.txt

@@ -84,6 +84,12 @@ Optional properties:
 - prefetch-instr : Instruction prefetch. Value: <0> (forcibly disable),
   <1> (forcibly enable), property absent (retain settings set by
   firmware)
+- arm,dynamic-clock-gating : L2 dynamic clock gating. Value: <0> (forcibly
+  disable), <1> (forcibly enable), property absent (OS specific behavior,
+  preferrably retain firmware settings)
+- arm,standby-mode: L2 standby mode enable. Value <0> (forcibly disable),
+  <1> (forcibly enable), property absent (OS specific behavior,
+  preferrably retain firmware settings)
 
 Example:
 

Documentation/devicetree/bindings/clock/qca,ath79-pll.txt

@@ -3,7 +3,7 @@ Binding for Qualcomm Atheros AR7xxx/AR9XXX PLL controller
 The PPL controller provides the 3 main clocks of the SoC: CPU, DDR and AHB.
 
 Required Properties:
-- compatible: has to be "qca,<soctype>-cpu-intc" and one of the following
+- compatible: has to be "qca,<soctype>-pll" and one of the following
   fallbacks:
   - "qca,ar7100-pll"
   - "qca,ar7240-pll"
@@ -21,8 +21,8 @@ Optional properties:
 
 Example:
 
-	memory-controller@18050000 {
-		compatible = "qca,ar9132-ppl", "qca,ar9130-pll";
+	pll-controller@18050000 {
+		compatible = "qca,ar9132-pll", "qca,ar9130-pll";
 		reg = <0x18050000 0x20>;
 
 		clock-names = "ref";

Documentation/devicetree/bindings/pinctrl/img,pistachio-pinctrl.txt

@@ -134,12 +134,12 @@ mfio80		ddr_debug, mips_trace_data, mips_debug
 mfio81		dreq0, mips_trace_data, eth_debug
 mfio82		dreq1, mips_trace_data, eth_debug
 mfio83		mips_pll_lock, mips_trace_data, usb_debug
-mfio84		sys_pll_lock, mips_trace_data, usb_debug
-mfio85		wifi_pll_lock, mips_trace_data, sdhost_debug
-mfio86		bt_pll_lock, mips_trace_data, sdhost_debug
-mfio87		rpu_v_pll_lock, dreq2, socif_debug
-mfio88		rpu_l_pll_lock, dreq3, socif_debug
-mfio89		audio_pll_lock, dreq4, dreq5
+mfio84		audio_pll_lock, mips_trace_data, usb_debug
+mfio85		rpu_v_pll_lock, mips_trace_data, sdhost_debug
+mfio86		rpu_l_pll_lock, mips_trace_data, sdhost_debug
+mfio87		sys_pll_lock, dreq2, socif_debug
+mfio88		wifi_pll_lock, dreq3, socif_debug
+mfio89		bt_pll_lock, dreq4, dreq5
 tck
 trstn
 tdi

Documentation/filesystems/cramfs.txt

@@ -38,7 +38,7 @@ the update lasts only as long as the inode is cached in memory, after
 which the timestamp reverts to 1970, i.e. moves backwards in time.
 
 Currently, cramfs must be written and read with architectures of the
-same endianness, and can be read only by kernels with PAGE_CACHE_SIZE
+same endianness, and can be read only by kernels with PAGE_SIZE
 == 4096.  At least the latter of these is a bug, but it hasn't been
 decided what the best fix is.  For the moment if you have larger pages
 you can just change the #define in mkcramfs.c, so long as you don't

Documentation/filesystems/tmpfs.txt

@@ -60,7 +60,7 @@ size:      The limit of allocated bytes for this tmpfs instance. The
            default is half of your physical RAM without swap. If you
            oversize your tmpfs instances the machine will deadlock
            since the OOM handler will not be able to free that memory.
-nr_blocks: The same as size, but in blocks of PAGE_CACHE_SIZE.
+nr_blocks: The same as size, but in blocks of PAGE_SIZE.
 nr_inodes: The maximum number of inodes for this instance. The default
            is half of the number of your physical RAM pages, or (on a
            machine with highmem) the number of lowmem RAM pages,

Documentation/filesystems/vfs.txt

@@ -708,9 +708,9 @@ struct address_space_operations {
 	from the address space.  This generally corresponds to either a
 	truncation, punch hole  or a complete invalidation of the address
 	space (in the latter case 'offset' will always be 0 and 'length'
-	will be PAGE_CACHE_SIZE). Any private data associated with the page
+	will be PAGE_SIZE). Any private data associated with the page
 	should be updated to reflect this truncation.  If offset is 0 and
-	length is PAGE_CACHE_SIZE, then the private data should be released,
+	length is PAGE_SIZE, then the private data should be released,
 	because the page must be able to be completely discarded.  This may
 	be done by calling the ->releasepage function, but in this case the
 	release MUST succeed.

Documentation/kdump/kdump.txt

@@ -263,12 +263,6 @@ The syntax is:
     crashkernel=<range1>:<size1>[,<range2>:<size2>,...][@offset]
     range=start-[end]
 
-Please note, on arm, the offset is required.
-    crashkernel=<range1>:<size1>[,<range2>:<size2>,...]@offset
-    range=start-[end]
-
-    'start' is inclusive and 'end' is exclusive.
-
 For example:
 
     crashkernel=512M-2G:64M,2G-:128M
@@ -307,10 +301,9 @@ Boot into System Kernel
    on the memory consumption of the kdump system. In general this is not
    dependent on the memory size of the production system.
 
-   On arm, use "crashkernel=Y@X". Note that the start address of the kernel
-   will be aligned to 128MiB (0x08000000), so if the start address is not then
-   any space below the alignment point may be overwritten by the dump-capture kernel,
-   which means it is possible that the vmcore is not that precise as expected.
+   On arm, the use of "crashkernel=Y@X" is no longer necessary; the
+   kernel will automatically locate the crash kernel image within the
+   first 512MB of RAM if X is not given.
 
 
 Load the Dump-capture Kernel

Documentation/kernel-parameters.txt

@@ -2921,11 +2921,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 				for broken drivers that don't call it.
 		skip_isa_align	[X86] do not align io start addr, so can
 				handle more pci cards
-		firmware	[ARM] Do not re-enumerate the bus but instead
-				just use the configuration from the
-				bootloader. This is currently used on
-				IXP2000 systems where the bus has to be
-				configured a certain way for adjunct CPUs.
 		noearly		[X86] Don't do any early type 1 scanning.
 				This might help on some broken boards which
 				machine check when some devices' config space

Documentation/networking/switchdev.txt

@@ -386,7 +386,7 @@ used. First phase is to "prepare" anything needed, including various checks,
 memory allocation, etc. The goal is to handle the stuff that is not unlikely
 to fail here. The second phase is to "commit" the actual changes.
 
-Switchdev provides an inftrastructure for sharing items (for example memory
+Switchdev provides an infrastructure for sharing items (for example memory
 allocations) between the two phases.
 
 The object created by a driver in "prepare" phase and it is queued up by:

Documentation/power/runtime_pm.txt

@@ -586,6 +586,10 @@ drivers to make their ->remove() callbacks avoid races with runtime PM directly,
 but also it allows of more flexibility in the handling of devices during the
 removal of their drivers.
 
+Drivers in ->remove() callback should undo the runtime PM changes done
+in ->probe(). Usually this means calling pm_runtime_disable(),
+pm_runtime_dont_use_autosuspend() etc.
+
 The user space can effectively disallow the driver of the device to power manage
 it at run time by changing the value of its /sys/devices/.../power/control
 attribute to "on", which causes pm_runtime_forbid() to be called.  In principle,

Documentation/x86/topology.txt

@@ -0,0 +1,208 @@
+x86 Topology
+============
+
+This documents and clarifies the main aspects of x86 topology modelling and
+representation in the kernel. Update/change when doing changes to the
+respective code.
+
+The architecture-agnostic topology definitions are in
+Documentation/cputopology.txt. This file holds x86-specific
+differences/specialities which must not necessarily apply to the generic
+definitions. Thus, the way to read up on Linux topology on x86 is to start
+with the generic one and look at this one in parallel for the x86 specifics.
+
+Needless to say, code should use the generic functions - this file is *only*
+here to *document* the inner workings of x86 topology.
+
+Started by Thomas Gleixner <tglx@linutronix.de> and Borislav Petkov <bp@alien8.de>.
+
+The main aim of the topology facilities is to present adequate interfaces to
+code which needs to know/query/use the structure of the running system wrt
+threads, cores, packages, etc.
+
+The kernel does not care about the concept of physical sockets because a
+socket has no relevance to software. It's an electromechanical component. In
+the past a socket always contained a single package (see below), but with the
+advent of Multi Chip Modules (MCM) a socket can hold more than one package. So
+there might be still references to sockets in the code, but they are of
+historical nature and should be cleaned up.
+
+The topology of a system is described in the units of:
+
+    - packages
+    - cores
+    - threads
+
+* Package:
+
+  Packages contain a number of cores plus shared resources, e.g. DRAM
+  controller, shared caches etc.
+
+  AMD nomenclature for package is 'Node'.
+
+  Package-related topology information in the kernel:
+
+  - cpuinfo_x86.x86_max_cores:
+
+    The number of cores in a package. This information is retrieved via CPUID.
+
+  - cpuinfo_x86.phys_proc_id:
+
+    The physical ID of the package. This information is retrieved via CPUID
+    and deduced from the APIC IDs of the cores in the package.
+
+  - cpuinfo_x86.logical_id:
+
+    The logical ID of the package. As we do not trust BIOSes to enumerate the
+    packages in a consistent way, we introduced the concept of logical package
+    ID so we can sanely calculate the number of maximum possible packages in
+    the system and have the packages enumerated linearly.
+
+  - topology_max_packages():
+
+    The maximum possible number of packages in the system. Helpful for per
+    package facilities to preallocate per package information.
+
+
+* Cores:
+
+  A core consists of 1 or more threads. It does not matter whether the threads
+  are SMT- or CMT-type threads.
+
+  AMDs nomenclature for a CMT core is "Compute Unit". The kernel always uses
+  "core".
+
+  Core-related topology information in the kernel:
+
+  - smp_num_siblings:
+
+    The number of threads in a core. The number of threads in a package can be
+    calculated by:
+
+	threads_per_package = cpuinfo_x86.x86_max_cores * smp_num_siblings
+
+
+* Threads:
+
+  A thread is a single scheduling unit. It's the equivalent to a logical Linux
+  CPU.
+
+  AMDs nomenclature for CMT threads is "Compute Unit Core". The kernel always
+  uses "thread".
+
+  Thread-related topology information in the kernel:
+
+  - topology_core_cpumask():
+
+    The cpumask contains all online threads in the package to which a thread
+    belongs.
+
+    The number of online threads is also printed in /proc/cpuinfo "siblings."
+
+  - topology_sibling_mask():
+
+    The cpumask contains all online threads in the core to which a thread
+    belongs.
+
+   - topology_logical_package_id():
+
+    The logical package ID to which a thread belongs.
+
+   - topology_physical_package_id():
+
+    The physical package ID to which a thread belongs.
+
+   - topology_core_id();
+
+    The ID of the core to which a thread belongs. It is also printed in /proc/cpuinfo
+    "core_id."
+
+
+
+System topology examples
+
+Note:
+
+The alternative Linux CPU enumeration depends on how the BIOS enumerates the
+threads. Many BIOSes enumerate all threads 0 first and then all threads 1.
+That has the "advantage" that the logical Linux CPU numbers of threads 0 stay
+the same whether threads are enabled or not. That's merely an implementation
+detail and has no practical impact.
+
+1) Single Package, Single Core
+
+   [package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+
+2) Single Package, Dual Core
+
+   a) One thread per core
+
+	[package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+		    -> [core 1] -> [thread 0] -> Linux CPU 1
+
+   b) Two threads per core
+
+	[package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+				-> [thread 1] -> Linux CPU 1
+		    -> [core 1] -> [thread 0] -> Linux CPU 2
+				-> [thread 1] -> Linux CPU 3
+
+      Alternative enumeration:
+
+	[package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+				-> [thread 1] -> Linux CPU 2
+		    -> [core 1] -> [thread 0] -> Linux CPU 1
+				-> [thread 1] -> Linux CPU 3
+
+      AMD nomenclature for CMT systems:
+
+	[node 0] -> [Compute Unit 0] -> [Compute Unit Core 0] -> Linux CPU 0
+				     -> [Compute Unit Core 1] -> Linux CPU 1
+		 -> [Compute Unit 1] -> [Compute Unit Core 0] -> Linux CPU 2
+				     -> [Compute Unit Core 1] -> Linux CPU 3
+
+4) Dual Package, Dual Core
+
+   a) One thread per core
+
+	[package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+		    -> [core 1] -> [thread 0] -> Linux CPU 1
+
+	[package 1] -> [core 0] -> [thread 0] -> Linux CPU 2
+		    -> [core 1] -> [thread 0] -> Linux CPU 3
+
+   b) Two threads per core
+
+	[package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+				-> [thread 1] -> Linux CPU 1
+		    -> [core 1] -> [thread 0] -> Linux CPU 2
+				-> [thread 1] -> Linux CPU 3
+
+	[package 1] -> [core 0] -> [thread 0] -> Linux CPU 4
+				-> [thread 1] -> Linux CPU 5
+		    -> [core 1] -> [thread 0] -> Linux CPU 6
+				-> [thread 1] -> Linux CPU 7
+
+      Alternative enumeration:
+
+	[package 0] -> [core 0] -> [thread 0] -> Linux CPU 0
+				-> [thread 1] -> Linux CPU 4
+		    -> [core 1] -> [thread 0] -> Linux CPU 1
+				-> [thread 1] -> Linux CPU 5
+
+	[package 1] -> [core 0] -> [thread 0] -> Linux CPU 2
+				-> [thread 1] -> Linux CPU 6
+		    -> [core 1] -> [thread 0] -> Linux CPU 3
+				-> [thread 1] -> Linux CPU 7
+
+      AMD nomenclature for CMT systems:
+
+	[node 0] -> [Compute Unit 0] -> [Compute Unit Core 0] -> Linux CPU 0
+				     -> [Compute Unit Core 1] -> Linux CPU 1
+		 -> [Compute Unit 1] -> [Compute Unit Core 0] -> Linux CPU 2
+				     -> [Compute Unit Core 1] -> Linux CPU 3
+
+	[node 1] -> [Compute Unit 0] -> [Compute Unit Core 0] -> Linux CPU 4
+				     -> [Compute Unit Core 1] -> Linux CPU 5
+		 -> [Compute Unit 1] -> [Compute Unit Core 0] -> Linux CPU 6
+				     -> [Compute Unit Core 1] -> Linux CPU 7

MAINTAINERS

@@ -4302,7 +4302,7 @@ F:	drivers/net/ethernet/agere/
 
 ETHERNET BRIDGE
 M:	Stephen Hemminger <stephen@networkplumber.org>
-L:	bridge@lists.linux-foundation.org
+L:	bridge@lists.linux-foundation.org (moderated for non-subscribers)
 L:	netdev@vger.kernel.org
 W:	http://www.linuxfoundation.org/en/Net:Bridge
 S:	Maintained
@@ -5042,6 +5042,7 @@ F:	include/linux/hw_random.h
 HARDWARE SPINLOCK CORE
 M:	Ohad Ben-Cohen <ohad@wizery.com>
 M:	Bjorn Andersson <bjorn.andersson@linaro.org>
+L:	linux-remoteproc@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock.git
 F:	Documentation/hwspinlock.txt
@@ -5750,7 +5751,7 @@ R:	Don Skidmore <donald.c.skidmore@intel.com>
 R:	Bruce Allan <bruce.w.allan@intel.com>
 R:	John Ronciak <john.ronciak@intel.com>
 R:	Mitch Williams <mitch.a.williams@intel.com>
-L:	intel-wired-lan@lists.osuosl.org
+L:	intel-wired-lan@lists.osuosl.org (moderated for non-subscribers)
 W:	http://www.intel.com/support/feedback.htm
 W:	http://e1000.sourceforge.net/
 Q:	http://patchwork.ozlabs.org/project/intel-wired-lan/list/
@@ -6402,7 +6403,7 @@ KPROBES
 M:	Ananth N Mavinakayanahalli <ananth@in.ibm.com>
 M:	Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
 M:	"David S. Miller" <davem@davemloft.net>
-M:	Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
+M:	Masami Hiramatsu <mhiramat@kernel.org>
 S:	Maintained
 F:	Documentation/kprobes.txt
 F:	include/linux/kprobes.h
@@ -7575,7 +7576,7 @@ F:	drivers/infiniband/hw/nes/
 
 NETEM NETWORK EMULATOR
 M:	Stephen Hemminger <stephen@networkplumber.org>
-L:	netem@lists.linux-foundation.org
+L:	netem@lists.linux-foundation.org (moderated for non-subscribers)
 S:	Maintained
 F:	net/sched/sch_netem.c
 
@@ -8253,7 +8254,7 @@ F:	Documentation/filesystems/overlayfs.txt
 
 ORANGEFS FILESYSTEM
 M:	Mike Marshall <hubcap@omnibond.com>
-L:	pvfs2-developers@beowulf-underground.org
+L:	pvfs2-developers@beowulf-underground.org (subscribers-only)
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux.git
 S:	Supported
 F:	fs/orangefs/
@@ -8711,6 +8712,8 @@ F:	drivers/pinctrl/sh-pfc/
 
 PIN CONTROLLER - SAMSUNG
 M:	Tomasz Figa <tomasz.figa@gmail.com>
+M:	Krzysztof Kozlowski <k.kozlowski@samsung.com>
+M:	Sylwester Nawrocki <s.nawrocki@samsung.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	linux-samsung-soc@vger.kernel.org (moderated for non-subscribers)
 S:	Maintained
@@ -9139,6 +9142,13 @@ T:	git git://github.com/KrasnikovEugene/wcn36xx.git
 S:	Supported
 F:	drivers/net/wireless/ath/wcn36xx/
 
+QEMU MACHINE EMULATOR AND VIRTUALIZER SUPPORT
+M:	Gabriel Somlo <somlo@cmu.edu>
+M:	"Michael S. Tsirkin" <mst@redhat.com>
+L:	qemu-devel@nongnu.org
+S:	Maintained
+F:	drivers/firmware/qemu_fw_cfg.c
+
 RADOS BLOCK DEVICE (RBD)
 M:	Ilya Dryomov <idryomov@gmail.com>
 M:	Sage Weil <sage@redhat.com>
@@ -9314,6 +9324,7 @@ F:	include/linux/regmap.h
 REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM
 M:	Ohad Ben-Cohen <ohad@wizery.com>
 M:	Bjorn Andersson <bjorn.andersson@linaro.org>
+L:	linux-remoteproc@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc.git
 S:	Maintained
 F:	drivers/remoteproc/
@@ -9323,6 +9334,7 @@ F:	include/linux/remoteproc.h
 REMOTE PROCESSOR MESSAGING (RPMSG) SUBSYSTEM
 M:	Ohad Ben-Cohen <ohad@wizery.com>
 M:	Bjorn Andersson <bjorn.andersson@linaro.org>
+L:	linux-remoteproc@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg.git
 S:	Maintained
 F:	drivers/rpmsg/
@@ -10583,6 +10595,14 @@ L:	linux-tegra@vger.kernel.org
 S:	Maintained
 F:	drivers/staging/nvec/
 
+STAGING - OLPC SECONDARY DISPLAY CONTROLLER (DCON)
+M:	Jens Frederich <jfrederich@gmail.com>
+M:	Daniel Drake <dsd@laptop.org>
+M:	Jon Nettleton <jon.nettleton@gmail.com>
+W:	http://wiki.laptop.org/go/DCON
+S:	Maintained
+F:	drivers/staging/olpc_dcon/
+
 STAGING - REALTEK RTL8712U DRIVERS
 M:	Larry Finger <Larry.Finger@lwfinger.net>
 M:	Florian Schilhabel <florian.c.schilhabel@googlemail.com>.
@@ -11137,8 +11157,8 @@ F:	include/uapi/linux/tipc*.h
 F:	net/tipc/
 
 TILE ARCHITECTURE
-M:	Chris Metcalf <cmetcalf@ezchip.com>
-W:	http://www.ezchip.com/scm/
+M:	Chris Metcalf <cmetcalf@mellanox.com>
+W:	http://www.mellanox.com/repository/solutions/tile-scm/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git
 S:	Supported
 F:	arch/tile/
@@ -12202,9 +12222,9 @@ S:	Maintained
 F:	drivers/media/tuners/tuner-xc2028.*
 
 XEN HYPERVISOR INTERFACE
-M:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
 M:	Boris Ostrovsky <boris.ostrovsky@oracle.com>
 M:	David Vrabel <david.vrabel@citrix.com>
+M:	Juergen Gross <jgross@suse.com>
 L:	xen-devel@lists.xenproject.org (moderated for non-subscribers)
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
 S:	Supported
@@ -12216,16 +12236,16 @@ F:	include/xen/
 F:	include/uapi/xen/
 
 XEN HYPERVISOR ARM
-M:	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
+M:	Stefano Stabellini <sstabellini@kernel.org>
 L:	xen-devel@lists.xenproject.org (moderated for non-subscribers)
-S:	Supported
+S:	Maintained
 F:	arch/arm/xen/
 F:	arch/arm/include/asm/xen/
 
 XEN HYPERVISOR ARM64
-M:	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
+M:	Stefano Stabellini <sstabellini@kernel.org>
 L:	xen-devel@lists.xenproject.org (moderated for non-subscribers)
-S:	Supported
+S:	Maintained
 F:	arch/arm64/xen/
 F:	arch/arm64/include/asm/xen/
 

Makefile

@@ -1,7 +1,7 @@
 VERSION = 4
 PATCHLEVEL = 6
 SUBLEVEL = 0
-EXTRAVERSION = -rc1
+EXTRAVERSION = -rc3
 NAME = Blurry Fish Butt
 
 # *DOCUMENTATION*

arch/arc/mm/cache.c

@@ -628,7 +628,7 @@ void flush_dcache_page(struct page *page)
 
 		/* kernel reading from page with U-mapping */
 		phys_addr_t paddr = (unsigned long)page_address(page);
-		unsigned long vaddr = page->index << PAGE_CACHE_SHIFT;
+		unsigned long vaddr = page->index << PAGE_SHIFT;
 
 		if (addr_not_cache_congruent(paddr, vaddr))
 			__flush_dcache_page(paddr, vaddr);

arch/arm/boot/Makefile

@@ -88,7 +88,7 @@ $(obj)/bootpImage: $(obj)/bootp/bootp FORCE
 	$(call if_changed,objcopy)
 	@$(kecho) '  Kernel: $@ is ready'
 
-PHONY += initrd
+PHONY += initrd install zinstall uinstall
 initrd:
 	@test "$(INITRD_PHYS)" != "" || \
 	(echo This machine does not support INITRD; exit -1)

arch/arm/include/asm/dma-mapping.h

@@ -162,8 +162,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
 
 static inline void dma_mark_clean(void *addr, size_t size) { }
 
-extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
-
 /**
  * arm_dma_alloc - allocate consistent memory for DMA
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices

arch/arm/include/asm/io.h

@@ -392,9 +392,18 @@ void __iomem *ioremap(resource_size_t res_cookie, size_t size);
 #define ioremap ioremap
 #define ioremap_nocache ioremap
 
+/*
+ * Do not use ioremap_cache for mapping memory. Use memremap instead.
+ */
 void __iomem *ioremap_cache(resource_size_t res_cookie, size_t size);
 #define ioremap_cache ioremap_cache
 
+/*
+ * Do not use ioremap_cached in new code. Provided for the benefit of
+ * the pxa2xx-flash MTD driver only.
+ */
+void __iomem *ioremap_cached(resource_size_t res_cookie, size_t size);
+
 void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size);
 #define ioremap_wc ioremap_wc
 #define ioremap_wt ioremap_wc
@@ -402,6 +411,9 @@ void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size);
 void iounmap(volatile void __iomem *iomem_cookie);
 #define iounmap iounmap
 
+void *arch_memremap_wb(phys_addr_t phys_addr, size_t size);
+#define arch_memremap_wb arch_memremap_wb
+
 /*
  * io{read,write}{16,32}be() macros
  */

arch/arm/include/asm/memory.h

@@ -288,19 +288,43 @@ static inline void *phys_to_virt(phys_addr_t x)
 #define __va(x)			((void *)__phys_to_virt((phys_addr_t)(x)))
 #define pfn_to_kaddr(pfn)	__va((phys_addr_t)(pfn) << PAGE_SHIFT)
 
-extern unsigned long (*arch_virt_to_idmap)(unsigned long x);
+extern long long arch_phys_to_idmap_offset;
 
 /*
- * These are for systems that have a hardware interconnect supported alias of
- * physical memory for idmap purposes.  Most cases should leave these
+ * These are for systems that have a hardware interconnect supported alias
+ * of physical memory for idmap purposes.  Most cases should leave these
  * untouched.  Note: this can only return addresses less than 4GiB.
  */
+static inline bool arm_has_idmap_alias(void)
+{
+	return IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset != 0;
+}
+
+#define IDMAP_INVALID_ADDR ((u32)~0)
+
+static inline unsigned long phys_to_idmap(phys_addr_t addr)
+{
+	if (IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset) {
+		addr += arch_phys_to_idmap_offset;
+		if (addr > (u32)~0)
+			addr = IDMAP_INVALID_ADDR;
+	}
+	return addr;
+}
+
+static inline phys_addr_t idmap_to_phys(unsigned long idmap)
+{
+	phys_addr_t addr = idmap;
+
+	if (IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset)
+		addr -= arch_phys_to_idmap_offset;
+
+	return addr;
+}
+
 static inline unsigned long __virt_to_idmap(unsigned long x)
 {
-	if (IS_ENABLED(CONFIG_MMU) && arch_virt_to_idmap)
-		return arch_virt_to_idmap(x);
-	else
-		return __virt_to_phys(x);
+	return phys_to_idmap(__virt_to_phys(x));
 }
 
 #define virt_to_idmap(x)	__virt_to_idmap((unsigned long)(x))

arch/arm/include/asm/unistd.h

@@ -19,7 +19,7 @@
  * This may need to be greater than __NR_last_syscall+1 in order to
  * account for the padding in the syscall table
  */
-#define __NR_syscalls  (392)
+#define __NR_syscalls  (396)
 
 #define __ARCH_WANT_STAT64
 #define __ARCH_WANT_SYS_GETHOSTNAME

arch/arm/include/uapi/asm/unistd.h

@@ -418,6 +418,8 @@
 #define __NR_membarrier			(__NR_SYSCALL_BASE+389)
 #define __NR_mlock2			(__NR_SYSCALL_BASE+390)
 #define __NR_copy_file_range		(__NR_SYSCALL_BASE+391)
+#define __NR_preadv2			(__NR_SYSCALL_BASE+392)
+#define __NR_pwritev2			(__NR_SYSCALL_BASE+393)
 
 /*
  * The following SWIs are ARM private.

arch/arm/kernel/bios32.c

@@ -550,9 +550,6 @@ char * __init pcibios_setup(char *str)
 	if (!strcmp(str, "debug")) {
 		debug_pci = 1;
 		return NULL;
-	} else if (!strcmp(str, "firmware")) {
-		pci_add_flags(PCI_PROBE_ONLY);
-		return NULL;
 	}
 	return str;
 }

arch/arm/kernel/calls.S

@@ -399,8 +399,10 @@
 		CALL(sys_execveat)
 		CALL(sys_userfaultfd)
 		CALL(sys_membarrier)
-		CALL(sys_mlock2)
+/* 390 */	CALL(sys_mlock2)
 		CALL(sys_copy_file_range)
+		CALL(sys_preadv2)
+		CALL(sys_pwritev2)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted

arch/arm/kernel/reboot.c

@@ -104,8 +104,6 @@ void machine_halt(void)
 {
 	local_irq_disable();
 	smp_send_stop();
-
-	local_irq_disable();
 	while (1);
 }
 
@@ -150,6 +148,5 @@ void machine_restart(char *cmd)
 
 	/* Whoops - the platform was unable to reboot. Tell the user! */
 	printk("Reboot failed -- System halted\n");
-	local_irq_disable();
 	while (1);
 }

arch/arm/kernel/setup.c

@@ -430,11 +430,13 @@ static void __init patch_aeabi_idiv(void)
 	pr_info("CPU: div instructions available: patching division code\n");
 
 	fn_addr = ((uintptr_t)&__aeabi_uidiv) & ~1;
+	asm ("" : "+g" (fn_addr));
 	((u32 *)fn_addr)[0] = udiv_instruction();
 	((u32 *)fn_addr)[1] = bx_lr_instruction();
 	flush_icache_range(fn_addr, fn_addr + 8);
 
 	fn_addr = ((uintptr_t)&__aeabi_idiv) & ~1;
+	asm ("" : "+g" (fn_addr));
 	((u32 *)fn_addr)[0] = sdiv_instruction();
 	((u32 *)fn_addr)[1] = bx_lr_instruction();
 	flush_icache_range(fn_addr, fn_addr + 8);
@@ -938,6 +940,12 @@ static int __init init_machine_late(void)
 late_initcall(init_machine_late);
 
 #ifdef CONFIG_KEXEC
+/*
+ * The crash region must be aligned to 128MB to avoid
+ * zImage relocating below the reserved region.
+ */
+#define CRASH_ALIGN	(128 << 20)
+
 static inline unsigned long long get_total_mem(void)
 {
 	unsigned long total;
@@ -965,6 +973,26 @@ static void __init reserve_crashkernel(void)
 	if (ret)
 		return;
 
+	if (crash_base <= 0) {
+		unsigned long long crash_max = idmap_to_phys((u32)~0);
+		crash_base = memblock_find_in_range(CRASH_ALIGN, crash_max,
+						    crash_size, CRASH_ALIGN);
+		if (!crash_base) {
+			pr_err("crashkernel reservation failed - No suitable area found.\n");
+			return;
+		}
+	} else {
+		unsigned long long start;
+
+		start = memblock_find_in_range(crash_base,
+					       crash_base + crash_size,
+					       crash_size, SECTION_SIZE);
+		if (start != crash_base) {
+			pr_err("crashkernel reservation failed - memory is in use.\n");
+			return;
+		}
+	}
+
 	ret = memblock_reserve(crash_base, crash_size);
 	if (ret < 0) {
 		pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n",

arch/arm/kvm/arm.c

@@ -1061,15 +1061,27 @@ static void cpu_init_hyp_mode(void *dummy)
 	kvm_arm_init_debug();
 }
 
+static void cpu_hyp_reinit(void)
+{
+	if (is_kernel_in_hyp_mode()) {
+		/*
+		 * cpu_init_stage2() is safe to call even if the PM
+		 * event was cancelled before the CPU was reset.
+		 */
+		cpu_init_stage2(NULL);
+	} else {
+		if (__hyp_get_vectors() == hyp_default_vectors)
+			cpu_init_hyp_mode(NULL);
+	}
+}
+
 static int hyp_init_cpu_notify(struct notifier_block *self,
 			       unsigned long action, void *cpu)
 {
 	switch (action) {
 	case CPU_STARTING:
 	case CPU_STARTING_FROZEN:
-		if (__hyp_get_vectors() == hyp_default_vectors)
-			cpu_init_hyp_mode(NULL);
-		break;
+		cpu_hyp_reinit();
 	}
 
 	return NOTIFY_OK;
@@ -1084,9 +1096,8 @@ static int hyp_init_cpu_pm_notifier(struct notifier_block *self,
 				    unsigned long cmd,
 				    void *v)
 {
-	if (cmd == CPU_PM_EXIT &&
-	    __hyp_get_vectors() == hyp_default_vectors) {
-		cpu_init_hyp_mode(NULL);
+	if (cmd == CPU_PM_EXIT) {
+		cpu_hyp_reinit();
 		return NOTIFY_OK;
 	}
 
@@ -1127,6 +1138,22 @@ static int init_subsystems(void)
 {
 	int err;
 
+	/*
+	 * Register CPU Hotplug notifier
+	 */
+	cpu_notifier_register_begin();
+	err = __register_cpu_notifier(&hyp_init_cpu_nb);
+	cpu_notifier_register_done();
+	if (err) {
+		kvm_err("Cannot register KVM init CPU notifier (%d)\n", err);
+		return err;
+	}
+
+	/*
+	 * Register CPU lower-power notifier
+	 */
+	hyp_cpu_pm_init();
+
 	/*
 	 * Init HYP view of VGIC
 	 */
@@ -1270,19 +1297,6 @@ static int init_hyp_mode(void)
 	free_boot_hyp_pgd();
 #endif
 
-	cpu_notifier_register_begin();
-
-	err = __register_cpu_notifier(&hyp_init_cpu_nb);
-
-	cpu_notifier_register_done();
-
-	if (err) {
-		kvm_err("Cannot register HYP init CPU notifier (%d)\n", err);
-		goto out_err;
-	}
-
-	hyp_cpu_pm_init();
-
 	/* set size of VMID supported by CPU */
 	kvm_vmid_bits = kvm_get_vmid_bits();
 	kvm_info("%d-bit VMID\n", kvm_vmid_bits);

arch/arm/mach-keystone/keystone.c

@@ -63,11 +63,6 @@ static void __init keystone_init(void)
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
 
-static unsigned long keystone_virt_to_idmap(unsigned long x)
-{
-	return (phys_addr_t)(x) - CONFIG_PAGE_OFFSET + KEYSTONE_LOW_PHYS_START;
-}
-
 static long long __init keystone_pv_fixup(void)
 {
 	long long offset;
@@ -91,7 +86,7 @@ static long long __init keystone_pv_fixup(void)
 	offset = KEYSTONE_HIGH_PHYS_START - KEYSTONE_LOW_PHYS_START;
 
 	/* Populate the arch idmap hook */
-	arch_virt_to_idmap = keystone_virt_to_idmap;
+	arch_phys_to_idmap_offset = -offset;
 
 	return offset;
 }

arch/arm/mm/cache-l2x0.c

@@ -647,11 +647,6 @@ static void __init l2c310_enable(void __iomem *base, unsigned num_lock)
 		aux &= ~(L310_AUX_CTRL_FULL_LINE_ZERO | L310_AUX_CTRL_EARLY_BRESP);
 	}
 
-	/* r3p0 or later has power control register */
-	if (rev >= L310_CACHE_ID_RTL_R3P0)
-		l2x0_saved_regs.pwr_ctrl = L310_DYNAMIC_CLK_GATING_EN |
-						L310_STNDBY_MODE_EN;
-
 	/*
 	 * Always enable non-secure access to the lockdown registers -
 	 * we write to them as part of the L2C enable sequence so they
@@ -1141,6 +1136,7 @@ static void __init l2c310_of_parse(const struct device_node *np,
 	u32 filter[2] = { 0, 0 };
 	u32 assoc;
 	u32 prefetch;
+	u32 power;
 	u32 val;
 	int ret;
 
@@ -1271,6 +1267,26 @@ static void __init l2c310_of_parse(const struct device_node *np,
 	}
 
 	l2x0_saved_regs.prefetch_ctrl = prefetch;
+
+	power = l2x0_saved_regs.pwr_ctrl |
+		L310_DYNAMIC_CLK_GATING_EN | L310_STNDBY_MODE_EN;
+
+	ret = of_property_read_u32(np, "arm,dynamic-clock-gating", &val);
+	if (!ret) {
+		if (!val)
+			power &= ~L310_DYNAMIC_CLK_GATING_EN;
+	} else if (ret != -EINVAL) {
+		pr_err("L2C-310 OF dynamic-clock-gating property value is missing or invalid\n");
+	}
+	ret = of_property_read_u32(np, "arm,standby-mode", &val);
+	if (!ret) {
+		if (!val)
+			power &= ~L310_STNDBY_MODE_EN;
+	} else if (ret != -EINVAL) {
+		pr_err("L2C-310 OF standby-mode property value is missing or invalid\n");
+	}
+
+	l2x0_saved_regs.pwr_ctrl = power;
 }
 
 static const struct l2c_init_data of_l2c310_data __initconst = {

arch/arm/mm/cache-uniphier.c

@@ -96,6 +96,7 @@ struct uniphier_cache_data {
 	void __iomem *ctrl_base;
 	void __iomem *rev_base;
 	void __iomem *op_base;
+	void __iomem *way_ctrl_base;
 	u32 way_present_mask;
 	u32 way_locked_mask;
 	u32 nsets;
@@ -256,10 +257,13 @@ static void __init __uniphier_cache_set_locked_ways(
 					struct uniphier_cache_data *data,
 					u32 way_mask)
 {
+	unsigned int cpu;
+
 	data->way_locked_mask = way_mask & data->way_present_mask;
 
-	writel_relaxed(~data->way_locked_mask & data->way_present_mask,
-		       data->ctrl_base + UNIPHIER_SSCLPDAWCR);
+	for_each_possible_cpu(cpu)
+		writel_relaxed(~data->way_locked_mask & data->way_present_mask,
+			       data->way_ctrl_base + 4 * cpu);
 }
 
 static void uniphier_cache_maint_range(unsigned long start, unsigned long end,
@@ -459,6 +463,8 @@ static int __init __uniphier_cache_init(struct device_node *np,
 		goto err;
 	}
 
+	data->way_ctrl_base = data->ctrl_base + 0xc00;
+
 	if (*cache_level == 2) {
 		u32 revision = readl(data->rev_base + UNIPHIER_SSCID);
 		/*
@@ -467,6 +473,22 @@ static int __init __uniphier_cache_init(struct device_node *np,
 		 */
 		if (revision <= 0x16)
 			data->range_op_max_size = (u32)1 << 22;
+
+		/*
+		 * Unfortunatly, the offset address of active way control base
+		 * varies from SoC to SoC.
+		 */
+		switch (revision) {
+		case 0x11:	/* sLD3 */
+			data->way_ctrl_base = data->ctrl_base + 0x870;
+			break;
+		case 0x12:	/* LD4 */
+		case 0x16:	/* sld8 */
+			data->way_ctrl_base = data->ctrl_base + 0x840;
+			break;
+		default:
+			break;
+		}
 	}
 
 	data->range_op_max_size -= data->line_size;

arch/arm/mm/dma-mapping.c

@@ -190,7 +190,6 @@ struct dma_map_ops arm_dma_ops = {
 	.sync_single_for_device	= arm_dma_sync_single_for_device,
 	.sync_sg_for_cpu	= arm_dma_sync_sg_for_cpu,
 	.sync_sg_for_device	= arm_dma_sync_sg_for_device,
-	.set_dma_mask		= arm_dma_set_mask,
 };
 EXPORT_SYMBOL(arm_dma_ops);
 
@@ -209,7 +208,6 @@ struct dma_map_ops arm_coherent_dma_ops = {
 	.get_sgtable		= arm_dma_get_sgtable,
 	.map_page		= arm_coherent_dma_map_page,
 	.map_sg			= arm_dma_map_sg,
-	.set_dma_mask		= arm_dma_set_mask,
 };
 EXPORT_SYMBOL(arm_coherent_dma_ops);
 
@@ -1142,16 +1140,6 @@ int dma_supported(struct device *dev, u64 mask)
 }
 EXPORT_SYMBOL(dma_supported);
 
-int arm_dma_set_mask(struct device *dev, u64 dma_mask)
-{
-	if (!dev->dma_mask || !dma_supported(dev, dma_mask))
-		return -EIO;
-
-	*dev->dma_mask = dma_mask;
-
-	return 0;
-}
-
 #define PREALLOC_DMA_DEBUG_ENTRIES	4096
 
 static int __init dma_debug_do_init(void)
@@ -2005,8 +1993,6 @@ struct dma_map_ops iommu_ops = {
 	.unmap_sg		= arm_iommu_unmap_sg,
 	.sync_sg_for_cpu	= arm_iommu_sync_sg_for_cpu,
 	.sync_sg_for_device	= arm_iommu_sync_sg_for_device,
-
-	.set_dma_mask		= arm_dma_set_mask,
 };
 
 struct dma_map_ops iommu_coherent_ops = {
@@ -2020,8 +2006,6 @@ struct dma_map_ops iommu_coherent_ops = {
 
 	.map_sg		= arm_coherent_iommu_map_sg,
 	.unmap_sg	= arm_coherent_iommu_unmap_sg,
-
-	.set_dma_mask	= arm_dma_set_mask,
 };
 
 /**

arch/arm/mm/flush.c

@@ -235,7 +235,7 @@ void __flush_dcache_page(struct address_space *mapping, struct page *page)
 	 */
 	if (mapping && cache_is_vipt_aliasing())
 		flush_pfn_alias(page_to_pfn(page),
-				page->index << PAGE_CACHE_SHIFT);
+				page->index << PAGE_SHIFT);
 }
 
 static void __flush_dcache_aliases(struct address_space *mapping, struct page *page)
@@ -250,7 +250,7 @@ static void __flush_dcache_aliases(struct address_space *mapping, struct page *p
 	 *   data in the current VM view associated with this page.
 	 * - aliasing VIPT: we only need to find one mapping of this page.
 	 */
-	pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT);
+	pgoff = page->index;
 
 	flush_dcache_mmap_lock(mapping);
 	vma_interval_tree_foreach(mpnt, &mapping->i_mmap, pgoff, pgoff) {

arch/arm/mm/idmap.c

@@ -15,7 +15,7 @@
  * page tables.
  */
 pgd_t *idmap_pgd;
-unsigned long (*arch_virt_to_idmap)(unsigned long x);
+long long arch_phys_to_idmap_offset;
 
 #ifdef CONFIG_ARM_LPAE
 static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,

arch/arm/mm/ioremap.c

@@ -297,9 +297,10 @@ static void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
 	}
 
 	/*
-	 * Don't allow RAM to be mapped - this causes problems with ARMv6+
+	 * Don't allow RAM to be mapped with mismatched attributes - this
+	 * causes problems with ARMv6+
 	 */
-	if (WARN_ON(pfn_valid(pfn)))
+	if (WARN_ON(pfn_valid(pfn) && mtype != MT_MEMORY_RW))
 		return NULL;
 
 	area = get_vm_area_caller(size, VM_IOREMAP, caller);
@@ -380,11 +381,15 @@ void __iomem *ioremap(resource_size_t res_cookie, size_t size)
 EXPORT_SYMBOL(ioremap);
 
 void __iomem *ioremap_cache(resource_size_t res_cookie, size_t size)
+	__alias(ioremap_cached);
+
+void __iomem *ioremap_cached(resource_size_t res_cookie, size_t size)
 {
 	return arch_ioremap_caller(res_cookie, size, MT_DEVICE_CACHED,
 				   __builtin_return_address(0));
 }
 EXPORT_SYMBOL(ioremap_cache);
+EXPORT_SYMBOL(ioremap_cached);
 
 void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size)
 {
@@ -414,6 +419,13 @@ __arm_ioremap_exec(phys_addr_t phys_addr, size_t size, bool cached)
 			__builtin_return_address(0));
 }
 
+void *arch_memremap_wb(phys_addr_t phys_addr, size_t size)
+{
+	return (__force void *)arch_ioremap_caller(phys_addr, size,
+						   MT_MEMORY_RW,
+						   __builtin_return_address(0));
+}
+
 void __iounmap(volatile void __iomem *io_addr)
 {
 	void *addr = (void *)(PAGE_MASK & (unsigned long)io_addr);

arch/arm/mm/nommu.c

@@ -367,11 +367,15 @@ void __iomem *ioremap(resource_size_t res_cookie, size_t size)
 EXPORT_SYMBOL(ioremap);
 
 void __iomem *ioremap_cache(resource_size_t res_cookie, size_t size)
+	__alias(ioremap_cached);
+
+void __iomem *ioremap_cached(resource_size_t res_cookie, size_t size)
 {
 	return __arm_ioremap_caller(res_cookie, size, MT_DEVICE_CACHED,
 				    __builtin_return_address(0));
 }
 EXPORT_SYMBOL(ioremap_cache);
+EXPORT_SYMBOL(ioremap_cached);
 
 void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size)
 {
@@ -380,6 +384,11 @@ void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size)
 }
 EXPORT_SYMBOL(ioremap_wc);
 
+void *arch_memremap_wb(phys_addr_t phys_addr, size_t size)
+{
+	return (void *)phys_addr;
+}
+
 void __iounmap(volatile void __iomem *addr)
 {
 }

arch/arm/mm/proc-v7.S

@@ -281,12 +281,12 @@ __v7_ca17mp_setup:
 	bl      v7_invalidate_l1
 	ldmia	r12, {r1-r6, lr}
 #ifdef CONFIG_SMP
+	orr	r10, r10, #(1 << 6)		@ Enable SMP/nAMP mode
 	ALT_SMP(mrc	p15, 0, r0, c1, c0, 1)
-	ALT_UP(mov	r0, #(1 << 6))		@ fake it for UP
-	tst	r0, #(1 << 6)			@ SMP/nAMP mode enabled?
-	orreq	r0, r0, #(1 << 6)		@ Enable SMP/nAMP mode
-	orreq	r0, r0, r10			@ Enable CPU-specific SMP bits
-	mcreq	p15, 0, r0, c1, c0, 1
+	ALT_UP(mov	r0, r10)		@ fake it for UP
+	orr	r10, r10, r0			@ Set required bits
+	teq	r10, r0				@ Were they already set?
+	mcrne	p15, 0, r10, c1, c0, 1		@ No, update register
 #endif
 	b	__v7_setup_cont
 

arch/arm/tools/Makefile

@@ -4,7 +4,10 @@
 # Copyright (C) 2001 Russell King
 #
 
-include/generated/mach-types.h: $(src)/gen-mach-types $(src)/mach-types
-	@$(kecho) '  Generating $@'
-	@mkdir -p $(dir $@)
-	$(Q)$(AWK) -f $^ > $@ || { rm -f $@; /bin/false; }
+quiet_cmd_gen_mach = GEN     $@
+      cmd_gen_mach = mkdir -p $(dir $@) && \
+		     $(AWK) -f $(filter-out $(PHONY),$^) > $@ || \
+		     { rm -f $@; /bin/false; }
+
+include/generated/mach-types.h: $(src)/gen-mach-types $(src)/mach-types FORCE
+	$(call if_changed,gen_mach)

arch/arm64/configs/defconfig

@@ -68,11 +68,13 @@ CONFIG_KSM=y
 CONFIG_TRANSPARENT_HUGEPAGE=y
 CONFIG_CMA=y
 CONFIG_XEN=y
-CONFIG_CMDLINE="console=ttyAMA0"
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_COMPAT=y
 CONFIG_CPU_IDLE=y
 CONFIG_ARM_CPUIDLE=y
+CONFIG_CPU_FREQ=y
+CONFIG_ARM_BIG_LITTLE_CPUFREQ=y
+CONFIG_ARM_SCPI_CPUFREQ=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@@ -80,7 +82,6 @@ CONFIG_INET=y
 CONFIG_IP_PNP=y
 CONFIG_IP_PNP_DHCP=y
 CONFIG_IP_PNP_BOOTP=y
-# CONFIG_INET_LRO is not set
 # CONFIG_IPV6 is not set
 CONFIG_BPF_JIT=y
 # CONFIG_WIRELESS is not set
@@ -144,16 +145,18 @@ CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y
 CONFIG_SERIAL_MVEBU_UART=y
 CONFIG_VIRTIO_CONSOLE=y
 # CONFIG_HW_RANDOM is not set
-CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
 CONFIG_I2C_MV64XXX=y
 CONFIG_I2C_QUP=y
+CONFIG_I2C_TEGRA=y
 CONFIG_I2C_UNIPHIER_F=y
 CONFIG_I2C_RCAR=y
 CONFIG_SPI=y
 CONFIG_SPI_PL022=y
 CONFIG_SPI_QUP=y
 CONFIG_SPMI=y
+CONFIG_PINCTRL_SINGLE=y
 CONFIG_PINCTRL_MSM8916=y
 CONFIG_PINCTRL_QCOM_SPMI_PMIC=y
 CONFIG_GPIO_SYSFS=y
@@ -196,6 +199,7 @@ CONFIG_USB_EHCI_HCD_PLATFORM=y
 CONFIG_USB_OHCI_HCD=y
 CONFIG_USB_OHCI_HCD_PLATFORM=y
 CONFIG_USB_STORAGE=y
+CONFIG_USB_DWC2=y
 CONFIG_USB_CHIPIDEA=y
 CONFIG_USB_CHIPIDEA_UDC=y
 CONFIG_USB_CHIPIDEA_HOST=y
@@ -205,19 +209,20 @@ CONFIG_USB_MSM_OTG=y
 CONFIG_USB_ULPI=y
 CONFIG_USB_GADGET=y
 CONFIG_MMC=y
-CONFIG_MMC_BLOCK_MINORS=16
+CONFIG_MMC_BLOCK_MINORS=32
 CONFIG_MMC_ARMMMCI=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI_TEGRA=y
 CONFIG_MMC_SDHCI_MSM=y
 CONFIG_MMC_SPI=y
-CONFIG_MMC_SUNXI=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_EXYNOS=y
-CONFIG_MMC_BLOCK_MINORS=16
+CONFIG_MMC_DW_K3=y
+CONFIG_MMC_SUNXI=y
 CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_SYSCON=y
 CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
@@ -229,8 +234,8 @@ CONFIG_RTC_DRV_PL031=y
 CONFIG_RTC_DRV_SUN6I=y
 CONFIG_RTC_DRV_XGENE=y
 CONFIG_DMADEVICES=y
-CONFIG_QCOM_BAM_DMA=y
 CONFIG_TEGRA20_APB_DMA=y
+CONFIG_QCOM_BAM_DMA=y
 CONFIG_RCAR_DMAC=y
 CONFIG_VFIO=y
 CONFIG_VFIO_PCI=y
@@ -239,20 +244,26 @@ CONFIG_VIRTIO_BALLOON=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_XEN_GNTDEV=y
 CONFIG_XEN_GRANT_DEV_ALLOC=y
+CONFIG_COMMON_CLK_SCPI=y
 CONFIG_COMMON_CLK_CS2000_CP=y
 CONFIG_COMMON_CLK_QCOM=y
 CONFIG_MSM_GCC_8916=y
 CONFIG_HWSPINLOCK_QCOM=y
+CONFIG_MAILBOX=y
+CONFIG_ARM_MHU=y
+CONFIG_HI6220_MBOX=y
 CONFIG_ARM_SMMU=y
 CONFIG_QCOM_SMEM=y
 CONFIG_QCOM_SMD=y
 CONFIG_QCOM_SMD_RPM=y
 CONFIG_ARCH_TEGRA_132_SOC=y
 CONFIG_ARCH_TEGRA_210_SOC=y
-CONFIG_HISILICON_IRQ_MBIGEN=y
 CONFIG_EXTCON_USB_GPIO=y
+CONFIG_COMMON_RESET_HI6220=y
 CONFIG_PHY_RCAR_GEN3_USB2=y
+CONFIG_PHY_HI6220_USB=y
 CONFIG_PHY_XGENE=y
+CONFIG_ARM_SCPI_PROTOCOL=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_FANOTIFY=y
@@ -264,6 +275,7 @@ CONFIG_CUSE=y
 CONFIG_VFAT_FS=y
 CONFIG_TMPFS=y
 CONFIG_HUGETLBFS=y
+CONFIG_CONFIGFS_FS=y
 CONFIG_EFIVAR_FS=y
 CONFIG_SQUASHFS=y
 CONFIG_NFS_FS=y

arch/arm64/include/asm/kvm_arm.h

@@ -124,7 +124,9 @@
 #define VTCR_EL2_SL0_LVL1	(1 << 6)
 #define VTCR_EL2_T0SZ_MASK	0x3f
 #define VTCR_EL2_T0SZ_40B	24
-#define VTCR_EL2_VS		19
+#define VTCR_EL2_VS_SHIFT	19
+#define VTCR_EL2_VS_8BIT	(0 << VTCR_EL2_VS_SHIFT)
+#define VTCR_EL2_VS_16BIT	(1 << VTCR_EL2_VS_SHIFT)
 
 /*
  * We configure the Stage-2 page tables to always restrict the IPA space to be

arch/arm64/include/asm/kvm_host.h

@@ -27,7 +27,6 @@
 #include <asm/kvm.h>
 #include <asm/kvm_asm.h>
 #include <asm/kvm_mmio.h>
-#include <asm/kvm_perf_event.h>
 
 #define __KVM_HAVE_ARCH_INTC_INITIALIZED
 

arch/arm64/include/asm/kvm_hyp.h

@@ -21,7 +21,6 @@
 #include <linux/compiler.h>
 #include <linux/kvm_host.h>
 #include <asm/kvm_mmu.h>
-#include <asm/kvm_perf_event.h>
 #include <asm/sysreg.h>
 
 #define __hyp_text __section(.hyp.text) notrace

arch/arm64/include/asm/kvm_perf_event.h

@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __ASM_KVM_PERF_EVENT_H
-#define __ASM_KVM_PERF_EVENT_H
-
-#define	ARMV8_PMU_MAX_COUNTERS	32
-#define	ARMV8_PMU_COUNTER_MASK	(ARMV8_PMU_MAX_COUNTERS - 1)
-
-/*
- * Per-CPU PMCR: config reg
- */
-#define ARMV8_PMU_PMCR_E	(1 << 0) /* Enable all counters */
-#define ARMV8_PMU_PMCR_P	(1 << 1) /* Reset all counters */
-#define ARMV8_PMU_PMCR_C	(1 << 2) /* Cycle counter reset */
-#define ARMV8_PMU_PMCR_D	(1 << 3) /* CCNT counts every 64th cpu cycle */
-#define ARMV8_PMU_PMCR_X	(1 << 4) /* Export to ETM */
-#define ARMV8_PMU_PMCR_DP	(1 << 5) /* Disable CCNT if non-invasive debug*/
-/* Determines which bit of PMCCNTR_EL0 generates an overflow */
-#define ARMV8_PMU_PMCR_LC	(1 << 6)
-#define	ARMV8_PMU_PMCR_N_SHIFT	11	 /* Number of counters supported */
-#define	ARMV8_PMU_PMCR_N_MASK	0x1f
-#define	ARMV8_PMU_PMCR_MASK	0x7f	 /* Mask for writable bits */
-
-/*
- * PMOVSR: counters overflow flag status reg
- */
-#define	ARMV8_PMU_OVSR_MASK		0xffffffff	/* Mask for writable bits */
-#define	ARMV8_PMU_OVERFLOWED_MASK	ARMV8_PMU_OVSR_MASK
-
-/*
- * PMXEVTYPER: Event selection reg
- */
-#define	ARMV8_PMU_EVTYPE_MASK	0xc80003ff	/* Mask for writable bits */
-#define	ARMV8_PMU_EVTYPE_EVENT	0x3ff		/* Mask for EVENT bits */
-
-#define ARMV8_PMU_EVTYPE_EVENT_SW_INCR	0	/* Software increment event */
-
-/*
- * Event filters for PMUv3
- */
-#define	ARMV8_PMU_EXCLUDE_EL1	(1 << 31)
-#define	ARMV8_PMU_EXCLUDE_EL0	(1 << 30)
-#define	ARMV8_PMU_INCLUDE_EL2	(1 << 27)
-
-/*
- * PMUSERENR: user enable reg
- */
-#define ARMV8_PMU_USERENR_MASK	0xf		/* Mask for writable bits */
-#define ARMV8_PMU_USERENR_EN	(1 << 0) /* PMU regs can be accessed at EL0 */
-#define ARMV8_PMU_USERENR_SW	(1 << 1) /* PMSWINC can be written at EL0 */
-#define ARMV8_PMU_USERENR_CR	(1 << 2) /* Cycle counter can be read at EL0 */
-#define ARMV8_PMU_USERENR_ER	(1 << 3) /* Event counter can be read at EL0 */
-
-#endif

arch/arm64/include/asm/opcodes.h

@@ -1 +1,5 @@
+#ifdef CONFIG_CPU_BIG_ENDIAN
+#define CONFIG_CPU_ENDIAN_BE8 CONFIG_CPU_BIG_ENDIAN
+#endif
+
 #include <../../arm/include/asm/opcodes.h>

arch/arm64/include/asm/perf_event.h

@@ -17,6 +17,53 @@
 #ifndef __ASM_PERF_EVENT_H
 #define __ASM_PERF_EVENT_H
 
+#define	ARMV8_PMU_MAX_COUNTERS	32
+#define	ARMV8_PMU_COUNTER_MASK	(ARMV8_PMU_MAX_COUNTERS - 1)
+
+/*
+ * Per-CPU PMCR: config reg
+ */
+#define ARMV8_PMU_PMCR_E	(1 << 0) /* Enable all counters */
+#define ARMV8_PMU_PMCR_P	(1 << 1) /* Reset all counters */
+#define ARMV8_PMU_PMCR_C	(1 << 2) /* Cycle counter reset */
+#define ARMV8_PMU_PMCR_D	(1 << 3) /* CCNT counts every 64th cpu cycle */
+#define ARMV8_PMU_PMCR_X	(1 << 4) /* Export to ETM */
+#define ARMV8_PMU_PMCR_DP	(1 << 5) /* Disable CCNT if non-invasive debug*/
+#define ARMV8_PMU_PMCR_LC	(1 << 6) /* Overflow on 64 bit cycle counter */
+#define	ARMV8_PMU_PMCR_N_SHIFT	11	 /* Number of counters supported */
+#define	ARMV8_PMU_PMCR_N_MASK	0x1f
+#define	ARMV8_PMU_PMCR_MASK	0x7f	 /* Mask for writable bits */
+
+/*
+ * PMOVSR: counters overflow flag status reg
+ */
+#define	ARMV8_PMU_OVSR_MASK		0xffffffff	/* Mask for writable bits */
+#define	ARMV8_PMU_OVERFLOWED_MASK	ARMV8_PMU_OVSR_MASK
+
+/*
+ * PMXEVTYPER: Event selection reg
+ */
+#define	ARMV8_PMU_EVTYPE_MASK	0xc800ffff	/* Mask for writable bits */
+#define	ARMV8_PMU_EVTYPE_EVENT	0xffff		/* Mask for EVENT bits */
+
+#define ARMV8_PMU_EVTYPE_EVENT_SW_INCR	0	/* Software increment event */
+
+/*
+ * Event filters for PMUv3
+ */
+#define	ARMV8_PMU_EXCLUDE_EL1	(1 << 31)
+#define	ARMV8_PMU_EXCLUDE_EL0	(1 << 30)
+#define	ARMV8_PMU_INCLUDE_EL2	(1 << 27)
+
+/*
+ * PMUSERENR: user enable reg
+ */
+#define ARMV8_PMU_USERENR_MASK	0xf		/* Mask for writable bits */
+#define ARMV8_PMU_USERENR_EN	(1 << 0) /* PMU regs can be accessed at EL0 */
+#define ARMV8_PMU_USERENR_SW	(1 << 1) /* PMSWINC can be written at EL0 */
+#define ARMV8_PMU_USERENR_CR	(1 << 2) /* Cycle counter can be read at EL0 */
+#define ARMV8_PMU_USERENR_ER	(1 << 3) /* Event counter can be read at EL0 */
+
 #ifdef CONFIG_PERF_EVENTS
 struct pt_regs;
 extern unsigned long perf_instruction_pointer(struct pt_regs *regs);

arch/arm64/include/asm/sysreg.h

@@ -141,6 +141,9 @@
 #define ID_AA64MMFR1_VMIDBITS_SHIFT	4
 #define ID_AA64MMFR1_HADBS_SHIFT	0
 
+#define ID_AA64MMFR1_VMIDBITS_8		0
+#define ID_AA64MMFR1_VMIDBITS_16	2
+
 /* id_aa64mmfr2 */
 #define ID_AA64MMFR2_UAO_SHIFT		4
 

arch/arm64/kernel/perf_event.c

@@ -20,6 +20,7 @@
  */
 
 #include <asm/irq_regs.h>
+#include <asm/perf_event.h>
 #include <asm/virt.h>
 
 #include <linux/of.h>
@@ -384,9 +385,6 @@ static const struct attribute_group *armv8_pmuv3_attr_groups[] = {
 #define	ARMV8_IDX_COUNTER_LAST(cpu_pmu) \
 	(ARMV8_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)
 
-#define	ARMV8_MAX_COUNTERS	32
-#define	ARMV8_COUNTER_MASK	(ARMV8_MAX_COUNTERS - 1)
-
 /*
  * ARMv8 low level PMU access
  */
@@ -395,40 +393,7 @@ static const struct attribute_group *armv8_pmuv3_attr_groups[] = {
  * Perf Event to low level counters mapping
  */
 #define	ARMV8_IDX_TO_COUNTER(x)	\
-	(((x) - ARMV8_IDX_COUNTER0) & ARMV8_COUNTER_MASK)
-
-/*
- * Per-CPU PMCR: config reg
- */
-#define ARMV8_PMCR_E		(1 << 0) /* Enable all counters */
-#define ARMV8_PMCR_P		(1 << 1) /* Reset all counters */
-#define ARMV8_PMCR_C		(1 << 2) /* Cycle counter reset */
-#define ARMV8_PMCR_D		(1 << 3) /* CCNT counts every 64th cpu cycle */
-#define ARMV8_PMCR_X		(1 << 4) /* Export to ETM */
-#define ARMV8_PMCR_DP		(1 << 5) /* Disable CCNT if non-invasive debug*/
-#define ARMV8_PMCR_LC		(1 << 6) /* Overflow on 64 bit cycle counter */
-#define	ARMV8_PMCR_N_SHIFT	11	 /* Number of counters supported */
-#define	ARMV8_PMCR_N_MASK	0x1f
-#define	ARMV8_PMCR_MASK		0x7f	 /* Mask for writable bits */
-
-/*
- * PMOVSR: counters overflow flag status reg
- */
-#define	ARMV8_OVSR_MASK		0xffffffff	/* Mask for writable bits */
-#define	ARMV8_OVERFLOWED_MASK	ARMV8_OVSR_MASK
-
-/*
- * PMXEVTYPER: Event selection reg
- */
-#define	ARMV8_EVTYPE_MASK	0xc800ffff	/* Mask for writable bits */
-#define	ARMV8_EVTYPE_EVENT	0xffff		/* Mask for EVENT bits */
-
-/*
- * Event filters for PMUv3
- */
-#define	ARMV8_EXCLUDE_EL1	(1 << 31)
-#define	ARMV8_EXCLUDE_EL0	(1 << 30)
-#define	ARMV8_INCLUDE_EL2	(1 << 27)
+	(((x) - ARMV8_IDX_COUNTER0) & ARMV8_PMU_COUNTER_MASK)
 
 static inline u32 armv8pmu_pmcr_read(void)
 {
@@ -439,14 +404,14 @@ static inline u32 armv8pmu_pmcr_read(void)
 
 static inline void armv8pmu_pmcr_write(u32 val)
 {
-	val &= ARMV8_PMCR_MASK;
+	val &= ARMV8_PMU_PMCR_MASK;
 	isb();
 	asm volatile("msr pmcr_el0, %0" :: "r" (val));
 }
 
 static inline int armv8pmu_has_overflowed(u32 pmovsr)
 {
-	return pmovsr & ARMV8_OVERFLOWED_MASK;
+	return pmovsr & ARMV8_PMU_OVERFLOWED_MASK;
 }
 
 static inline int armv8pmu_counter_valid(struct arm_pmu *cpu_pmu, int idx)
@@ -512,7 +477,7 @@ static inline void armv8pmu_write_counter(struct perf_event *event, u32 value)
 static inline void armv8pmu_write_evtype(int idx, u32 val)
 {
 	if (armv8pmu_select_counter(idx) == idx) {
-		val &= ARMV8_EVTYPE_MASK;
+		val &= ARMV8_PMU_EVTYPE_MASK;
 		asm volatile("msr pmxevtyper_el0, %0" :: "r" (val));
 	}
 }
@@ -558,7 +523,7 @@ static inline u32 armv8pmu_getreset_flags(void)
 	asm volatile("mrs %0, pmovsclr_el0" : "=r" (value));
 
 	/* Write to clear flags */
-	value &= ARMV8_OVSR_MASK;
+	value &= ARMV8_PMU_OVSR_MASK;
 	asm volatile("msr pmovsclr_el0, %0" :: "r" (value));
 
 	return value;
@@ -696,7 +661,7 @@ static void armv8pmu_start(struct arm_pmu *cpu_pmu)
 
 	raw_spin_lock_irqsave(&events->pmu_lock, flags);
 	/* Enable all counters */
-	armv8pmu_pmcr_write(armv8pmu_pmcr_read() | ARMV8_PMCR_E);
+	armv8pmu_pmcr_write(armv8pmu_pmcr_read() | ARMV8_PMU_PMCR_E);
 	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
 }
 
@@ -707,7 +672,7 @@ static void armv8pmu_stop(struct arm_pmu *cpu_pmu)
 
 	raw_spin_lock_irqsave(&events->pmu_lock, flags);
 	/* Disable all counters */
-	armv8pmu_pmcr_write(armv8pmu_pmcr_read() & ~ARMV8_PMCR_E);
+	armv8pmu_pmcr_write(armv8pmu_pmcr_read() & ~ARMV8_PMU_PMCR_E);
 	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
 }
 
@@ -717,7 +682,7 @@ static int armv8pmu_get_event_idx(struct pmu_hw_events *cpuc,
 	int idx;
 	struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
 	struct hw_perf_event *hwc = &event->hw;
-	unsigned long evtype = hwc->config_base & ARMV8_EVTYPE_EVENT;
+	unsigned long evtype = hwc->config_base & ARMV8_PMU_EVTYPE_EVENT;
 
 	/* Always place a cycle counter into the cycle counter. */
 	if (evtype == ARMV8_PMUV3_PERFCTR_CLOCK_CYCLES) {
@@ -754,11 +719,11 @@ static int armv8pmu_set_event_filter(struct hw_perf_event *event,
 	    attr->exclude_kernel != attr->exclude_hv)
 		return -EINVAL;
 	if (attr->exclude_user)
-		config_base |= ARMV8_EXCLUDE_EL0;
+		config_base |= ARMV8_PMU_EXCLUDE_EL0;
 	if (!is_kernel_in_hyp_mode() && attr->exclude_kernel)
-		config_base |= ARMV8_EXCLUDE_EL1;
+		config_base |= ARMV8_PMU_EXCLUDE_EL1;
 	if (!attr->exclude_hv)
-		config_base |= ARMV8_INCLUDE_EL2;
+		config_base |= ARMV8_PMU_INCLUDE_EL2;
 
 	/*
 	 * Install the filter into config_base as this is used to
@@ -784,35 +749,36 @@ static void armv8pmu_reset(void *info)
 	 * Initialize & Reset PMNC. Request overflow interrupt for
 	 * 64 bit cycle counter but cheat in armv8pmu_write_counter().
 	 */
-	armv8pmu_pmcr_write(ARMV8_PMCR_P | ARMV8_PMCR_C | ARMV8_PMCR_LC);
+	armv8pmu_pmcr_write(ARMV8_PMU_PMCR_P | ARMV8_PMU_PMCR_C |
+			    ARMV8_PMU_PMCR_LC);
 }
 
 static int armv8_pmuv3_map_event(struct perf_event *event)
 {
 	return armpmu_map_event(event, &armv8_pmuv3_perf_map,
 				&armv8_pmuv3_perf_cache_map,
-				ARMV8_EVTYPE_EVENT);
+				ARMV8_PMU_EVTYPE_EVENT);
 }
 
 static int armv8_a53_map_event(struct perf_event *event)
 {
 	return armpmu_map_event(event, &armv8_a53_perf_map,
 				&armv8_a53_perf_cache_map,
-				ARMV8_EVTYPE_EVENT);
+				ARMV8_PMU_EVTYPE_EVENT);
 }
 
 static int armv8_a57_map_event(struct perf_event *event)
 {
 	return armpmu_map_event(event, &armv8_a57_perf_map,
 				&armv8_a57_perf_cache_map,
-				ARMV8_EVTYPE_EVENT);
+				ARMV8_PMU_EVTYPE_EVENT);
 }
 
 static int armv8_thunder_map_event(struct perf_event *event)
 {
 	return armpmu_map_event(event, &armv8_thunder_perf_map,
 				&armv8_thunder_perf_cache_map,
-				ARMV8_EVTYPE_EVENT);
+				ARMV8_PMU_EVTYPE_EVENT);
 }
 
 static void armv8pmu_read_num_pmnc_events(void *info)
@@ -820,7 +786,7 @@ static void armv8pmu_read_num_pmnc_events(void *info)
 	int *nb_cnt = info;
 
 	/* Read the nb of CNTx counters supported from PMNC */
-	*nb_cnt = (armv8pmu_pmcr_read() >> ARMV8_PMCR_N_SHIFT) & ARMV8_PMCR_N_MASK;
+	*nb_cnt = (armv8pmu_pmcr_read() >> ARMV8_PMU_PMCR_N_SHIFT) & ARMV8_PMU_PMCR_N_MASK;
 
 	/* Add the CPU cycles counter */
 	*nb_cnt += 1;

arch/arm64/kvm/hyp/s2-setup.c

@@ -36,8 +36,10 @@ void __hyp_text __init_stage2_translation(void)
 	 * Read the VMIDBits bits from ID_AA64MMFR1_EL1 and set the VS
 	 * bit in VTCR_EL2.
 	 */
-	tmp = (read_sysreg(id_aa64mmfr1_el1) >> 4) & 0xf;
-	val |= (tmp == 2) ? VTCR_EL2_VS : 0;
+	tmp = (read_sysreg(id_aa64mmfr1_el1) >> ID_AA64MMFR1_VMIDBITS_SHIFT) & 0xf;
+	val |= (tmp == ID_AA64MMFR1_VMIDBITS_16) ?
+			VTCR_EL2_VS_16BIT :
+			VTCR_EL2_VS_8BIT;
 
 	write_sysreg(val, vtcr_el2);
 }

arch/mips/alchemy/common/dbdma.c

@@ -261,7 +261,7 @@ u32 au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
 	au1x_dma_chan_t *cp;
 
 	/*
-	 * We do the intialization on the first channel allocation.
+	 * We do the initialization on the first channel allocation.
 	 * We have to wait because of the interrupt handler initialization
 	 * which can't be done successfully during board set up.
 	 */
@@ -964,7 +964,7 @@ u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr)
 	dp->dscr_source1 = dscr->dscr_source1;
 	dp->dscr_cmd1 = dscr->dscr_cmd1;
 	nbytes = dscr->dscr_cmd1;
-	/* Allow the caller to specifiy if an interrupt is generated */
+	/* Allow the caller to specify if an interrupt is generated */
 	dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
 	dp->dscr_cmd0 |= dscr->dscr_cmd0 | DSCR_CMD0_V;
 	ctp->chan_ptr->ddma_dbell = 0;

arch/mips/alchemy/devboards/db1000.c

@@ -503,15 +503,15 @@ int __init db1000_dev_setup(void)
 	if (board == BCSR_WHOAMI_DB1500) {
 		c0 = AU1500_GPIO2_INT;
 		c1 = AU1500_GPIO5_INT;
-		d0 = AU1500_GPIO0_INT;
-		d1 = AU1500_GPIO3_INT;
+		d0 = 0;	/* GPIO number, NOT irq! */
+		d1 = 3; /* GPIO number, NOT irq! */
 		s0 = AU1500_GPIO1_INT;
 		s1 = AU1500_GPIO4_INT;
 	} else if (board == BCSR_WHOAMI_DB1100) {
 		c0 = AU1100_GPIO2_INT;
 		c1 = AU1100_GPIO5_INT;
-		d0 = AU1100_GPIO0_INT;
-		d1 = AU1100_GPIO3_INT;
+		d0 = 0; /* GPIO number, NOT irq! */
+		d1 = 3; /* GPIO number, NOT irq! */
 		s0 = AU1100_GPIO1_INT;
 		s1 = AU1100_GPIO4_INT;
 
@@ -545,15 +545,15 @@ int __init db1000_dev_setup(void)
 	} else if (board == BCSR_WHOAMI_DB1000) {
 		c0 = AU1000_GPIO2_INT;
 		c1 = AU1000_GPIO5_INT;
-		d0 = AU1000_GPIO0_INT;
-		d1 = AU1000_GPIO3_INT;
+		d0 = 0; /* GPIO number, NOT irq! */
+		d1 = 3; /* GPIO number, NOT irq! */
 		s0 = AU1000_GPIO1_INT;
 		s1 = AU1000_GPIO4_INT;
 		platform_add_devices(db1000_devs, ARRAY_SIZE(db1000_devs));
 	} else if ((board == BCSR_WHOAMI_PB1500) ||
 		   (board == BCSR_WHOAMI_PB1500R2)) {
 		c0 = AU1500_GPIO203_INT;
-		d0 = AU1500_GPIO201_INT;
+		d0 = 1; /* GPIO number, NOT irq! */
 		s0 = AU1500_GPIO202_INT;
 		twosocks = 0;
 		flashsize = 64;
@@ -566,7 +566,7 @@ int __init db1000_dev_setup(void)
 		 */
 	} else if (board == BCSR_WHOAMI_PB1100) {
 		c0 = AU1100_GPIO11_INT;
-		d0 = AU1100_GPIO9_INT;
+		d0 = 9; /* GPIO number, NOT irq! */
 		s0 = AU1100_GPIO10_INT;
 		twosocks = 0;
 		flashsize = 64;
@@ -583,7 +583,6 @@ int __init db1000_dev_setup(void)
 	} else
 		return 0; /* unknown board, no further dev setup to do */
 
-	irq_set_irq_type(d0, IRQ_TYPE_EDGE_BOTH);
 	irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW);
 	irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW);
 
@@ -597,7 +596,6 @@ int __init db1000_dev_setup(void)
 		c0, d0, /*s0*/0, 0, 0);
 
 	if (twosocks) {
-		irq_set_irq_type(d1, IRQ_TYPE_EDGE_BOTH);
 		irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW);
 		irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW);
 

arch/mips/alchemy/devboards/db1550.c

@@ -514,7 +514,7 @@ static void __init db1550_devices(void)
 		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
 		AU1000_PCMCIA_IO_PHYS_ADDR,
 		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
-		AU1550_GPIO3_INT, AU1550_GPIO0_INT,
+		AU1550_GPIO3_INT, 0,
 		/*AU1550_GPIO21_INT*/0, 0, 0);
 
 	db1x_register_pcmcia_socket(
@@ -524,7 +524,7 @@ static void __init db1550_devices(void)
 		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
 		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
 		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
-		AU1550_GPIO5_INT, AU1550_GPIO1_INT,
+		AU1550_GPIO5_INT, 1,
 		/*AU1550_GPIO22_INT*/0, 0, 1);
 
 	platform_device_register(&db1550_nand_dev);

arch/mips/ath79/clock.c

@@ -26,8 +26,7 @@
 #include "common.h"
 
 #define AR71XX_BASE_FREQ	40000000
-#define AR724X_BASE_FREQ	5000000
-#define AR913X_BASE_FREQ	5000000
+#define AR724X_BASE_FREQ	40000000
 
 static struct clk *clks[3];
 static struct clk_onecell_data clk_data = {
@@ -103,8 +102,8 @@ static void __init ar724x_clocks_init(void)
 	div = ((pll >> AR724X_PLL_FB_SHIFT) & AR724X_PLL_FB_MASK);
 	freq = div * ref_rate;
 
-	div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK);
-	freq *= div;
+	div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK) * 2;
+	freq /= div;
 
 	cpu_rate = freq;
 
@@ -123,39 +122,6 @@ static void __init ar724x_clocks_init(void)
 	clk_add_alias("uart", NULL, "ahb", NULL);
 }
 
-static void __init ar913x_clocks_init(void)
-{
-	unsigned long ref_rate;
-	unsigned long cpu_rate;
-	unsigned long ddr_rate;
-	unsigned long ahb_rate;
-	u32 pll;
-	u32 freq;
-	u32 div;
-
-	ref_rate = AR913X_BASE_FREQ;
-	pll = ath79_pll_rr(AR913X_PLL_REG_CPU_CONFIG);
-
-	div = ((pll >> AR913X_PLL_FB_SHIFT) & AR913X_PLL_FB_MASK);
-	freq = div * ref_rate;
-
-	cpu_rate = freq;
-
-	div = ((pll >> AR913X_DDR_DIV_SHIFT) & AR913X_DDR_DIV_MASK) + 1;
-	ddr_rate = freq / div;
-
-	div = (((pll >> AR913X_AHB_DIV_SHIFT) & AR913X_AHB_DIV_MASK) + 1) * 2;
-	ahb_rate = cpu_rate / div;
-
-	ath79_add_sys_clkdev("ref", ref_rate);
-	clks[0] = ath79_add_sys_clkdev("cpu", cpu_rate);
-	clks[1] = ath79_add_sys_clkdev("ddr", ddr_rate);
-	clks[2] = ath79_add_sys_clkdev("ahb", ahb_rate);
-
-	clk_add_alias("wdt", NULL, "ahb", NULL);
-	clk_add_alias("uart", NULL, "ahb", NULL);
-}
-
 static void __init ar933x_clocks_init(void)
 {
 	unsigned long ref_rate;
@@ -443,10 +409,8 @@ void __init ath79_clocks_init(void)
 {
 	if (soc_is_ar71xx())
 		ar71xx_clocks_init();
-	else if (soc_is_ar724x())
+	else if (soc_is_ar724x() || soc_is_ar913x())
 		ar724x_clocks_init();
-	else if (soc_is_ar913x())
-		ar913x_clocks_init();
 	else if (soc_is_ar933x())
 		ar933x_clocks_init();
 	else if (soc_is_ar934x())

arch/mips/bcm47xx/sprom.c

@@ -714,11 +714,11 @@ void bcm47xx_sprom_register_fallbacks(void)
 {
 #if defined(CONFIG_BCM47XX_SSB)
 	if (ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb))
-		pr_warn("Failed to registered ssb SPROM handler\n");
+		pr_warn("Failed to register ssb SPROM handler\n");
 #endif
 
 #if defined(CONFIG_BCM47XX_BCMA)
 	if (bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma))
-		pr_warn("Failed to registered bcma SPROM handler\n");
+		pr_warn("Failed to register bcma SPROM handler\n");
 #endif
 }

arch/mips/boot/compressed/Makefile

@@ -39,10 +39,11 @@ vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
 vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)		   += $(obj)/uart-alchemy.o
 endif
 
-vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
+vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o
 
-$(obj)/ashldi3.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
-$(obj)/ashldi3.c: $(srctree)/arch/mips/lib/ashldi3.c
+extra-y += ashldi3.c bswapsi.c
+$(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
+$(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c
 	$(call cmd,shipped)
 
 targets := $(notdir $(vmlinuzobjs-y))

arch/mips/boot/dts/brcm/bcm7435.dtsi

@@ -82,7 +82,7 @@
 		};
 
 		gisb-arb@400000 {
-			compatible = "brcm,bcm7400-gisb-arb";
+			compatible = "brcm,bcm7435-gisb-arb";
 			reg = <0x400000 0xdc>;
 			native-endian;
 			interrupt-parent = <&sun_l2_intc>;

arch/mips/boot/dts/qca/ar9132.dtsi

@@ -83,7 +83,7 @@
 			};
 
 			pll: pll-controller@18050000 {
-				compatible = "qca,ar9132-ppl",
+				compatible = "qca,ar9132-pll",
 						"qca,ar9130-pll";
 				reg = <0x18050000 0x20>;
 

arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts

@@ -18,7 +18,7 @@
 		reg = <0x0 0x2000000>;
 	};
 
-	extosc: oscillator {
+	extosc: ref {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
 		clock-frequency = <40000000>;

arch/mips/cavium-octeon/executive/cvmx-interrupt-decodes.c

@@ -68,7 +68,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		gmx_rx_int_en.s.pause_drp = 1;
 		/* Skipping gmx_rx_int_en.s.reserved_16_18 */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
@@ -89,7 +89,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		/*gmx_rx_int_en.s.phy_spd = 1; */
 		/*gmx_rx_int_en.s.phy_link = 1; */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
@@ -112,7 +112,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		/*gmx_rx_int_en.s.phy_spd = 1; */
 		/*gmx_rx_int_en.s.phy_link = 1; */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
@@ -134,7 +134,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		/*gmx_rx_int_en.s.phy_spd = 1; */
 		/*gmx_rx_int_en.s.phy_link = 1; */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
@@ -156,7 +156,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		/*gmx_rx_int_en.s.phy_spd = 1; */
 		/*gmx_rx_int_en.s.phy_link = 1; */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
@@ -179,7 +179,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		/*gmx_rx_int_en.s.phy_spd = 1; */
 		/*gmx_rx_int_en.s.phy_link = 1; */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */
@@ -209,7 +209,7 @@ void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block)
 		gmx_rx_int_en.s.pause_drp = 1;
 		/* Skipping gmx_rx_int_en.s.reserved_16_18 */
 		/*gmx_rx_int_en.s.ifgerr = 1; */
-		/*gmx_rx_int_en.s.coldet = 1; // Collsion detect */
+		/*gmx_rx_int_en.s.coldet = 1; // Collision detect */
 		/*gmx_rx_int_en.s.falerr = 1; // False carrier error or extend error after slottime */
 		/*gmx_rx_int_en.s.rsverr = 1; // RGMII reserved opcodes */
 		/*gmx_rx_int_en.s.pcterr = 1; // Bad Preamble / Protocol */

arch/mips/cavium-octeon/executive/cvmx-pko.c

@@ -189,7 +189,7 @@ void cvmx_pko_initialize_global(void)
 	/*
 	 * Set the size of the PKO command buffers to an odd number of
 	 * 64bit words. This allows the normal two word send to stay
-	 * aligned and never span a comamnd word buffer.
+	 * aligned and never span a command word buffer.
 	 */
 	config.u64 = 0;
 	config.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;

arch/mips/cavium-octeon/smp.c

@@ -331,7 +331,7 @@ static int octeon_update_boot_vector(unsigned int cpu)
 	}
 
 	if (!(avail_coremask & (1 << coreid))) {
-		/* core not available, assume, that catched by simple-executive */
+		/* core not available, assume, that caught by simple-executive */
 		cvmx_write_csr(CVMX_CIU_PP_RST, 1 << coreid);
 		cvmx_write_csr(CVMX_CIU_PP_RST, 0);
 	}

arch/mips/configs/ci20_defconfig

@@ -17,13 +17,12 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_CGROUPS=y
+CONFIG_MEMCG=y
+CONFIG_CGROUP_SCHED=y
 CONFIG_CGROUP_FREEZER=y
-CONFIG_CGROUP_DEVICE=y
 CONFIG_CPUSETS=y
+CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_CPUACCT=y
-CONFIG_MEMCG=y
-CONFIG_MEMCG_KMEM=y
-CONFIG_CGROUP_SCHED=y
 CONFIG_NAMESPACES=y
 CONFIG_USER_NS=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
@@ -52,6 +51,11 @@ CONFIG_DEVTMPFS=y
 # CONFIG_ALLOW_DEV_COREDUMP is not set
 CONFIG_DMA_CMA=y
 CONFIG_CMA_SIZE_MBYTES=32
+CONFIG_MTD=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_JZ4780=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_ARC is not set
 # CONFIG_NET_CADENCE is not set
@@ -103,7 +107,7 @@ CONFIG_PROC_KCORE=y
 # CONFIG_PROC_PAGE_MONITOR is not set
 CONFIG_TMPFS=y
 CONFIG_CONFIGFS_FS=y
-# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_UBIFS_FS=y
 # CONFIG_NETWORK_FILESYSTEMS is not set
 CONFIG_NLS=y
 CONFIG_NLS_CODEPAGE_437=y

arch/mips/dec/int-handler.S

@@ -5,7 +5,7 @@
  * Written by Ralf Baechle and Andreas Busse, modified for DECstation
  * support by Paul Antoine and Harald Koerfgen.
  *
- * completly rewritten:
+ * completely rewritten:
  * Copyright (C) 1998 Harald Koerfgen
  *
  * Rewritten extensively for controller-driven IRQ support

arch/mips/fw/arc/memory.c

@@ -9,7 +9,7 @@
  * PROM library functions for acquiring/using memory descriptors given to us
  * from the ARCS firmware.  This is only used when CONFIG_ARC_MEMORY is set
  * because on some machines like SGI IP27 the ARC memory configuration data
- * completly bogus and alternate easier to use mechanisms are available.
+ * completely bogus and alternate easier to use mechanisms are available.
  */
 #include <linux/init.h>
 #include <linux/kernel.h>

arch/mips/include/asm/cpu-info.h

@@ -102,7 +102,7 @@ extern void cpu_probe(void);
 extern void cpu_report(void);
 
 extern const char *__cpu_name[];
-#define cpu_name_string()	__cpu_name[smp_processor_id()]
+#define cpu_name_string()	__cpu_name[raw_smp_processor_id()]
 
 struct seq_file;
 struct notifier_block;

arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h

@@ -141,7 +141,7 @@ octeon_main_processor:
 .endm
 
 /*
- * Do SMP slave processor setup necessary before we can savely execute C code.
+ * Do SMP slave processor setup necessary before we can safely execute C code.
  */
 	.macro	smp_slave_setup
 	.endm

arch/mips/include/asm/mach-generic/kernel-entry-init.h

@@ -16,7 +16,7 @@
 	.endm
 
 /*
- * Do SMP slave processor setup necessary before we can savely execute C code.
+ * Do SMP slave processor setup necessary before we can safely execute C code.
  */
 	.macro	smp_slave_setup
 	.endm

arch/mips/include/asm/mach-ip27/irq.h

@@ -11,7 +11,7 @@
 #define __ASM_MACH_IP27_IRQ_H
 
 /*
- * A hardwired interrupt number is completly stupid for this system - a
+ * A hardwired interrupt number is completely stupid for this system - a
  * large configuration might have thousands if not tenthousands of
  * interrupts.
  */

arch/mips/include/asm/mach-ip27/kernel-entry-init.h

@@ -81,7 +81,7 @@
 	.endm
 
 /*
- * Do SMP slave processor setup necessary before we can savely execute C code.
+ * Do SMP slave processor setup necessary before we can safely execute C code.
  */
 	.macro	smp_slave_setup
 	GET_NASID_ASM	t1

arch/mips/include/asm/mach-jz4740/gpio.h

@@ -27,7 +27,7 @@ enum jz_gpio_function {
 
 /*
  Usually a driver for a SoC component has to request several gpio pins and
- configure them as funcion pins.
+ configure them as function pins.
  jz_gpio_bulk_request can be used to ease this process.
  Usually one would do something like:
 

arch/mips/include/asm/mips-cm.h

@@ -28,7 +28,7 @@ extern void __iomem *mips_cm_l2sync_base;
  * This function returns the physical base address of the Coherence Manager
  * global control block, or 0 if no Coherence Manager is present. It provides
  * a default implementation which reads the CMGCRBase register where available,
- * and may be overriden by platforms which determine this address in a
+ * and may be overridden by platforms which determine this address in a
  * different way by defining a function with the same prototype except for the
  * name mips_cm_phys_base (without underscores).
  */

arch/mips/include/asm/mips-r2-to-r6-emul.h

@@ -79,7 +79,7 @@ struct r2_decoder_table {
 };
 
 
-extern void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
+extern void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code,
 			  const char *str);
 
 #ifndef CONFIG_MIPSR2_TO_R6_EMULATOR

arch/mips/include/asm/octeon/cvmx-config.h

@@ -33,7 +33,7 @@
 /* Packet buffers */
 #define CVMX_FPA_PACKET_POOL		    (0)
 #define CVMX_FPA_PACKET_POOL_SIZE	    CVMX_FPA_POOL_0_SIZE
-/* Work queue entrys */
+/* Work queue entries */
 #define CVMX_FPA_WQE_POOL		    (1)
 #define CVMX_FPA_WQE_POOL_SIZE		    CVMX_FPA_POOL_1_SIZE
 /* PKO queue command buffers */

arch/mips/include/asm/octeon/cvmx.h

@@ -189,7 +189,7 @@ static inline uint64_t cvmx_ptr_to_phys(void *ptr)
 static inline void *cvmx_phys_to_ptr(uint64_t physical_address)
 {
 	if (sizeof(void *) == 8) {
-		/* Just set the top bit, avoiding any TLB uglyness */
+		/* Just set the top bit, avoiding any TLB ugliness */
 		return CASTPTR(void,
 			       CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
 					    physical_address));

arch/mips/include/asm/pci/bridge.h

@@ -269,16 +269,16 @@ typedef struct bridge_err_cmdword_s {
 	union {
 		u32		cmd_word;
 		struct {
-			u32	didn:4,		/* Destination ID */
-				sidn:4,		/* Source ID	  */
-				pactyp:4,	/* Packet type	  */
-				tnum:5,		/* Trans Number	  */
-				coh:1,		/* Coh Transacti  */
-				ds:2,		/* Data size	  */
-				gbr:1,		/* GBR enable	  */
-				vbpm:1,		/* VBPM message	  */
+			u32	didn:4,		/* Destination ID  */
+				sidn:4,		/* Source ID	   */
+				pactyp:4,	/* Packet type	   */
+				tnum:5,		/* Trans Number	   */
+				coh:1,		/* Coh Transaction */
+				ds:2,		/* Data size	   */
+				gbr:1,		/* GBR enable	   */
+				vbpm:1,		/* VBPM message	   */
 				error:1,	/* Error occurred  */
-				barr:1,		/* Barrier op	  */
+				barr:1,		/* Barrier op	   */
 				rsvd:8;
 		} berr_st;
 	} berr_un;

arch/mips/include/asm/sgi/hpc3.h

@@ -147,7 +147,7 @@ struct hpc3_ethregs {
 #define HPC3_EPCFG_P1	 0x000f /* Cycles to spend in P1 state for PIO */
 #define HPC3_EPCFG_P2	 0x00f0 /* Cycles to spend in P2 state for PIO */
 #define HPC3_EPCFG_P3	 0x0f00 /* Cycles to spend in P3 state for PIO */
-#define HPC3_EPCFG_TST	 0x1000 /* Diagnistic ram test feature bit */
+#define HPC3_EPCFG_TST	 0x1000 /* Diagnostic ram test feature bit */
 
 	u32 _unused2[0x1000/4 - 8];	/* padding */
 

arch/mips/include/asm/sgiarcs.h

@@ -144,7 +144,7 @@ struct linux_tinfo {
 struct linux_vdirent {
 	ULONG namelen;
 	unsigned char attr;
-	char fname[32]; /* XXX imperical, should be a define */
+	char fname[32]; /* XXX empirical, should be a define */
 };
 
 /* Other stuff for files. */
@@ -179,7 +179,7 @@ struct linux_finfo {
 	enum linux_devtypes   dtype;
 	unsigned long	      namelen;
 	unsigned char	      attr;
-	char		      name[32]; /* XXX imperical, should be define */
+	char		      name[32]; /* XXX empirical, should be define */
 };
 
 /* This describes the vector containing function pointers to the ARC

arch/mips/include/asm/sn/ioc3.h

@@ -355,7 +355,7 @@ struct ioc3_etxd {
 #define SSCR_PAUSE_STATE 0x40000000	/* sets when PAUSE takes effect */
 #define SSCR_RESET	0x80000000	/* reset DMA channels */
 
-/* all producer/comsumer pointers are the same bitfield */
+/* all producer/consumer pointers are the same bitfield */
 #define PROD_CONS_PTR_4K 0x00000ff8	/* for 4K buffers */
 #define PROD_CONS_PTR_1K 0x000003f8	/* for 1K buffers */
 #define PROD_CONS_PTR_OFF 3

arch/mips/include/asm/sn/sn0/hubio.h

@@ -628,7 +628,7 @@ typedef union h1_icrbb_u {
 /*
  * Values for field imsgtype
  */
-#define IIO_ICRB_IMSGT_XTALK	0	/* Incoming Meessage from Xtalk */
+#define IIO_ICRB_IMSGT_XTALK	0	/* Incoming Message from Xtalk */
 #define IIO_ICRB_IMSGT_BTE	1	/* Incoming message from BTE	*/
 #define IIO_ICRB_IMSGT_SN0NET	2	/* Incoming message from SN0 net */
 #define IIO_ICRB_IMSGT_CRB	3	/* Incoming message from CRB ???  */

arch/mips/include/asm/uaccess.h

@@ -95,7 +95,7 @@ static inline bool eva_kernel_access(void)
 }
 
 /*
- * Is a address valid? This does a straighforward calculation rather
+ * Is a address valid? This does a straightforward calculation rather
  * than tests.
  *
  * Address valid if:

arch/mips/include/uapi/asm/unistd.h

@@ -381,16 +381,18 @@
 #define __NR_membarrier			(__NR_Linux + 358)
 #define __NR_mlock2			(__NR_Linux + 359)
 #define __NR_copy_file_range		(__NR_Linux + 360)
+#define __NR_preadv2			(__NR_Linux + 361)
+#define __NR_pwritev2			(__NR_Linux + 362)
 
 /*
  * Offset of the last Linux o32 flavoured syscall
  */
-#define __NR_Linux_syscalls		360
+#define __NR_Linux_syscalls		362
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
 
 #define __NR_O32_Linux			4000
-#define __NR_O32_Linux_syscalls		360
+#define __NR_O32_Linux_syscalls		362
 
 #if _MIPS_SIM == _MIPS_SIM_ABI64
 
@@ -719,16 +721,18 @@
 #define __NR_membarrier			(__NR_Linux + 318)
 #define __NR_mlock2			(__NR_Linux + 319)
 #define __NR_copy_file_range		(__NR_Linux + 320)
+#define __NR_preadv2			(__NR_Linux + 321)
+#define __NR_pwritev2			(__NR_Linux + 322)
 
 /*
  * Offset of the last Linux 64-bit flavoured syscall
  */
-#define __NR_Linux_syscalls		320
+#define __NR_Linux_syscalls		322
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
 
 #define __NR_64_Linux			5000
-#define __NR_64_Linux_syscalls		320
+#define __NR_64_Linux_syscalls		322
 
 #if _MIPS_SIM == _MIPS_SIM_NABI32
 
@@ -1061,15 +1065,17 @@
 #define __NR_membarrier			(__NR_Linux + 322)
 #define __NR_mlock2			(__NR_Linux + 323)
 #define __NR_copy_file_range		(__NR_Linux + 324)
+#define __NR_preadv2			(__NR_Linux + 325)
+#define __NR_pwritev2			(__NR_Linux + 326)
 
 /*
  * Offset of the last N32 flavoured syscall
  */
-#define __NR_Linux_syscalls		324
+#define __NR_Linux_syscalls		326
 
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux			6000
-#define __NR_N32_Linux_syscalls		324
+#define __NR_N32_Linux_syscalls		326
 
 #endif /* _UAPI_ASM_UNISTD_H */

arch/mips/kernel/mips-cm.c

@@ -24,7 +24,7 @@ static char *cm2_tr[8] = {
 	"0x04", "cpc", "0x06", "0x07"
 };
 
-/* CM3 Tag ECC transation type */
+/* CM3 Tag ECC transaction type */
 static char *cm3_tr[16] = {
 	[0x0] = "ReqNoData",
 	[0x1] = "0x1",

arch/mips/kernel/mips-r2-to-r6-emul.c

@@ -940,42 +940,42 @@ repeat:
 		switch (rt) {
 		case tgei_op:
 			if ((long)regs->regs[rs] >= MIPSInst_SIMM(inst))
-				do_trap_or_bp(regs, 0, "TGEI");
+				do_trap_or_bp(regs, 0, 0, "TGEI");
 
 			MIPS_R2_STATS(traps);
 
 			break;
 		case tgeiu_op:
 			if (regs->regs[rs] >= MIPSInst_UIMM(inst))
-				do_trap_or_bp(regs, 0, "TGEIU");
+				do_trap_or_bp(regs, 0, 0, "TGEIU");
 
 			MIPS_R2_STATS(traps);
 
 			break;
 		case tlti_op:
 			if ((long)regs->regs[rs] < MIPSInst_SIMM(inst))
-				do_trap_or_bp(regs, 0, "TLTI");
+				do_trap_or_bp(regs, 0, 0, "TLTI");
 
 			MIPS_R2_STATS(traps);
 
 			break;
 		case tltiu_op:
 			if (regs->regs[rs] < MIPSInst_UIMM(inst))
-				do_trap_or_bp(regs, 0, "TLTIU");
+				do_trap_or_bp(regs, 0, 0, "TLTIU");
 
 			MIPS_R2_STATS(traps);
 
 			break;
 		case teqi_op:
 			if (regs->regs[rs] == MIPSInst_SIMM(inst))
-				do_trap_or_bp(regs, 0, "TEQI");
+				do_trap_or_bp(regs, 0, 0, "TEQI");
 
 			MIPS_R2_STATS(traps);
 
 			break;
 		case tnei_op:
 			if (regs->regs[rs] != MIPSInst_SIMM(inst))
-				do_trap_or_bp(regs, 0, "TNEI");
+				do_trap_or_bp(regs, 0, 0, "TNEI");
 
 			MIPS_R2_STATS(traps);
 

arch/mips/kernel/module-rela.c

@@ -109,9 +109,10 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
 		       struct module *me)
 {
 	Elf_Mips_Rela *rel = (void *) sechdrs[relsec].sh_addr;
+	int (*handler)(struct module *me, u32 *location, Elf_Addr v);
 	Elf_Sym *sym;
 	u32 *location;
-	unsigned int i;
+	unsigned int i, type;
 	Elf_Addr v;
 	int res;
 
@@ -134,9 +135,21 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
 			return -ENOENT;
 		}
 
-		v = sym->st_value + rel[i].r_addend;
+		type = ELF_MIPS_R_TYPE(rel[i]);
+
+		if (type < ARRAY_SIZE(reloc_handlers_rela))
+			handler = reloc_handlers_rela[type];
+		else
+			handler = NULL;
 
-		res = reloc_handlers_rela[ELF_MIPS_R_TYPE(rel[i])](me, location, v);
+		if (!handler) {
+			pr_err("%s: Unknown relocation type %u\n",
+			       me->name, type);
+			return -EINVAL;
+		}
+
+		v = sym->st_value + rel[i].r_addend;
+		res = handler(me, location, v);
 		if (res)
 			return res;
 	}

arch/mips/kernel/module.c

@@ -197,9 +197,10 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
 		   struct module *me)
 {
 	Elf_Mips_Rel *rel = (void *) sechdrs[relsec].sh_addr;
+	int (*handler)(struct module *me, u32 *location, Elf_Addr v);
 	Elf_Sym *sym;
 	u32 *location;
-	unsigned int i;
+	unsigned int i, type;
 	Elf_Addr v;
 	int res;
 
@@ -223,9 +224,21 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
 			return -ENOENT;
 		}
 
-		v = sym->st_value;
+		type = ELF_MIPS_R_TYPE(rel[i]);
+
+		if (type < ARRAY_SIZE(reloc_handlers_rel))
+			handler = reloc_handlers_rel[type];
+		else
+			handler = NULL;
 
-		res = reloc_handlers_rel[ELF_MIPS_R_TYPE(rel[i])](me, location, v);
+		if (!handler) {
+			pr_err("%s: Unknown relocation type %u\n",
+			       me->name, type);
+			return -EINVAL;
+		}
+
+		v = sym->st_value;
+		res = handler(me, location, v);
 		if (res)
 			return res;
 	}

arch/mips/kernel/perf_event_mipsxx.c

@@ -530,7 +530,7 @@ static void mipspmu_enable(struct pmu *pmu)
 
 /*
  * MIPS performance counters can be per-TC. The control registers can
- * not be directly accessed accross CPUs. Hence if we want to do global
+ * not be directly accessed across CPUs. Hence if we want to do global
  * control, we need cross CPU calls. on_each_cpu() can help us, but we
  * can not make sure this function is called with interrupts enabled. So
  * here we pause local counters and then grab a rwlock and leave the

arch/mips/kernel/pm-cps.c

@@ -472,7 +472,7 @@ static void * __init cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 	/*
 	 * Disable all but self interventions. The load from COHCTL is defined
 	 * by the interAptiv & proAptiv SUMs as ensuring that the operation
-	 * resulting from the preceeding store is complete.
+	 * resulting from the preceding store is complete.
 	 */
 	uasm_i_addiu(&p, t0, zero, 1 << cpu_data[cpu].core);
 	uasm_i_sw(&p, t0, 0, r_pcohctl);

arch/mips/kernel/process.c

@@ -615,7 +615,7 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
 	 * allows us to only worry about whether an FP mode switch is in
 	 * progress when FP is first used in a tasks time slice. Pretty much all
 	 * of the mode switch overhead can thus be confined to cases where mode
-	 * switches are actually occuring. That is, to here. However for the
+	 * switches are actually occurring. That is, to here. However for the
 	 * thread performing the mode switch it may take a while...
 	 */
 	if (num_online_cpus() > 1) {

arch/mips/kernel/scall32-o32.S

@@ -596,3 +596,5 @@ EXPORT(sys_call_table)
 	PTR	sys_membarrier
 	PTR	sys_mlock2
 	PTR	sys_copy_file_range		/* 4360 */
+	PTR	sys_preadv2
+	PTR	sys_pwritev2

arch/mips/kernel/scall64-64.S

@@ -434,4 +434,6 @@ EXPORT(sys_call_table)
 	PTR	sys_membarrier
 	PTR	sys_mlock2
 	PTR	sys_copy_file_range		/* 5320 */
+	PTR	sys_preadv2
+	PTR	sys_pwritev2
 	.size	sys_call_table,.-sys_call_table

arch/mips/kernel/scall64-n32.S

@@ -424,4 +424,6 @@ EXPORT(sysn32_call_table)
 	PTR	sys_membarrier
 	PTR	sys_mlock2
 	PTR	sys_copy_file_range
+	PTR	compat_sys_preadv2		/* 6325 */
+	PTR	compat_sys_pwritev2
 	.size	sysn32_call_table,.-sysn32_call_table

arch/mips/kernel/scall64-o32.S

@@ -579,4 +579,6 @@ EXPORT(sys32_call_table)
 	PTR	sys_membarrier
 	PTR	sys_mlock2
 	PTR	sys_copy_file_range		/* 4360 */
+	PTR	compat_sys_preadv2
+	PTR	compat_sys_pwritev2
 	.size	sys32_call_table,.-sys32_call_table

arch/mips/kernel/smp.c

@@ -243,6 +243,18 @@ static int __init mips_smp_ipi_init(void)
 	struct irq_domain *ipidomain;
 	struct device_node *node;
 
+	/*
+	 * In some cases like qemu-malta, it is desired to try SMP with
+	 * a single core. Qemu-malta has no GIC, so an attempt to set any IPIs
+	 * would cause a BUG_ON() to be triggered since there's no ipidomain.
+	 *
+	 * Since for a single core system IPIs aren't required really, skip the
+	 * initialisation which should generally keep any such configurations
+	 * happy and only fail hard when trying to truely run SMP.
+	 */
+	if (cpumask_weight(cpu_possible_mask) == 1)
+		return 0;
+
 	node = of_irq_find_parent(of_root);
 	ipidomain = irq_find_matching_host(node, DOMAIN_BUS_IPI);
 

arch/mips/kernel/traps.c

@@ -56,6 +56,7 @@
 #include <asm/pgtable.h>
 #include <asm/ptrace.h>
 #include <asm/sections.h>
+#include <asm/siginfo.h>
 #include <asm/tlbdebug.h>
 #include <asm/traps.h>
 #include <asm/uaccess.h>
@@ -871,7 +872,7 @@ out:
 	exception_exit(prev_state);
 }
 
-void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
+void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code,
 	const char *str)
 {
 	siginfo_t info = { 0 };
@@ -928,7 +929,13 @@ void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
 	default:
 		scnprintf(b, sizeof(b), "%s instruction in kernel code", str);
 		die_if_kernel(b, regs);
-		force_sig(SIGTRAP, current);
+		if (si_code) {
+			info.si_signo = SIGTRAP;
+			info.si_code = si_code;
+			force_sig_info(SIGTRAP, &info, current);
+		} else {
+			force_sig(SIGTRAP, current);
+		}
 	}
 }
 
@@ -1012,7 +1019,7 @@ asmlinkage void do_bp(struct pt_regs *regs)
 		break;
 	}
 
-	do_trap_or_bp(regs, bcode, "Break");
+	do_trap_or_bp(regs, bcode, TRAP_BRKPT, "Break");
 
 out:
 	set_fs(seg);
@@ -1054,7 +1061,7 @@ asmlinkage void do_tr(struct pt_regs *regs)
 			tcode = (opcode >> 6) & ((1 << 10) - 1);
 	}
 
-	do_trap_or_bp(regs, tcode, "Trap");
+	do_trap_or_bp(regs, tcode, 0, "Trap");
 
 out:
 	set_fs(seg);
@@ -1115,19 +1122,7 @@ no_r2_instr:
 	if (unlikely(compute_return_epc(regs) < 0))
 		goto out;
 
-	if (get_isa16_mode(regs->cp0_epc)) {
-		unsigned short mmop[2] = { 0 };
-
-		if (unlikely(get_user(mmop[0], (u16 __user *)epc + 0) < 0))
-			status = SIGSEGV;
-		if (unlikely(get_user(mmop[1], (u16 __user *)epc + 1) < 0))
-			status = SIGSEGV;
-		opcode = mmop[0];
-		opcode = (opcode << 16) | mmop[1];
-
-		if (status < 0)
-			status = simulate_rdhwr_mm(regs, opcode);
-	} else {
+	if (!get_isa16_mode(regs->cp0_epc)) {
 		if (unlikely(get_user(opcode, epc) < 0))
 			status = SIGSEGV;
 
@@ -1142,6 +1137,18 @@ no_r2_instr:
 
 		if (status < 0)
 			status = simulate_fp(regs, opcode, old_epc, old31);
+	} else if (cpu_has_mmips) {
+		unsigned short mmop[2] = { 0 };
+
+		if (unlikely(get_user(mmop[0], (u16 __user *)epc + 0) < 0))
+			status = SIGSEGV;
+		if (unlikely(get_user(mmop[1], (u16 __user *)epc + 1) < 0))
+			status = SIGSEGV;
+		opcode = mmop[0];
+		opcode = (opcode << 16) | mmop[1];
+
+		if (status < 0)
+			status = simulate_rdhwr_mm(regs, opcode);
 	}
 
 	if (status < 0)
@@ -1492,6 +1499,7 @@ asmlinkage void do_mdmx(struct pt_regs *regs)
  */
 asmlinkage void do_watch(struct pt_regs *regs)
 {
+	siginfo_t info = { .si_signo = SIGTRAP, .si_code = TRAP_HWBKPT };
 	enum ctx_state prev_state;
 	u32 cause;
 
@@ -1512,7 +1520,7 @@ asmlinkage void do_watch(struct pt_regs *regs)
 	if (test_tsk_thread_flag(current, TIF_LOAD_WATCH)) {
 		mips_read_watch_registers();
 		local_irq_enable();
-		force_sig(SIGTRAP, current);
+		force_sig_info(SIGTRAP, &info, current);
 	} else {
 		mips_clear_watch_registers();
 		local_irq_enable();
@@ -2214,7 +2222,7 @@ void __init trap_init(void)
 
 	/*
 	 * Copy the generic exception handlers to their final destination.
-	 * This will be overriden later as suitable for a particular
+	 * This will be overridden later as suitable for a particular
 	 * configuration.
 	 */
 	set_handler(0x180, &except_vec3_generic, 0x80);

arch/mips/kernel/unaligned.c

@@ -885,7 +885,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
 {
 	union mips_instruction insn;
 	unsigned long value;
-	unsigned int res;
+	unsigned int res, preempted;
 	unsigned long origpc;
 	unsigned long orig31;
 	void __user *fault_addr = NULL;
@@ -1226,27 +1226,36 @@ static void emulate_load_store_insn(struct pt_regs *regs,
 			if (!access_ok(VERIFY_READ, addr, sizeof(*fpr)))
 				goto sigbus;
 
-			/*
-			 * Disable preemption to avoid a race between copying
-			 * state from userland, migrating to another CPU and
-			 * updating the hardware vector register below.
-			 */
-			preempt_disable();
-
-			res = __copy_from_user_inatomic(fpr, addr,
-							sizeof(*fpr));
-			if (res)
-				goto fault;
-
-			/*
-			 * Update the hardware register if it is in use by the
-			 * task in this quantum, in order to avoid having to
-			 * save & restore the whole vector context.
-			 */
-			if (test_thread_flag(TIF_USEDMSA))
-				write_msa_wr(wd, fpr, df);
+			do {
+				/*
+				 * If we have live MSA context keep track of
+				 * whether we get preempted in order to avoid
+				 * the register context we load being clobbered
+				 * by the live context as it's saved during
+				 * preemption. If we don't have live context
+				 * then it can't be saved to clobber the value
+				 * we load.
+				 */
+				preempted = test_thread_flag(TIF_USEDMSA);
+
+				res = __copy_from_user_inatomic(fpr, addr,
+								sizeof(*fpr));
+				if (res)
+					goto fault;
 
-			preempt_enable();
+				/*
+				 * Update the hardware register if it is in use
+				 * by the task in this quantum, in order to
+				 * avoid having to save & restore the whole
+				 * vector context.
+				 */
+				preempt_disable();
+				if (test_thread_flag(TIF_USEDMSA)) {
+					write_msa_wr(wd, fpr, df);
+					preempted = 0;
+				}
+				preempt_enable();
+			} while (preempted);
 			break;
 
 		case msa_st_op:

arch/mips/kvm/tlb.c

@@ -632,7 +632,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 
 	kvm_debug("%s: vcpu %p, cpu: %d\n", __func__, vcpu, cpu);
 
-	/* Alocate new kernel and user ASIDs if needed */
+	/* Allocate new kernel and user ASIDs if needed */
 
 	local_irq_save(flags);
 

arch/mips/kvm/trap_emul.c

@@ -500,7 +500,7 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu)
 	kvm_write_c0_guest_config7(cop0, (MIPS_CONF7_WII) | (1 << 10));
 
 	/*
-	 * Setup IntCtl defaults, compatibilty mode for timer interrupts (HW5)
+	 * Setup IntCtl defaults, compatibility mode for timer interrupts (HW5)
 	 */
 	kvm_write_c0_guest_intctl(cop0, 0xFC000000);
 

arch/mips/math-emu/ieee754dp.c

@@ -97,7 +97,7 @@ union ieee754dp ieee754dp_format(int sn, int xe, u64 xm)
 {
 	assert(xm);		/* we don't gen exact zeros (probably should) */
 
-	assert((xm >> (DP_FBITS + 1 + 3)) == 0);	/* no execess */
+	assert((xm >> (DP_FBITS + 1 + 3)) == 0);	/* no excess */
 	assert(xm & (DP_HIDDEN_BIT << 3));
 
 	if (xe < DP_EMIN) {
@@ -165,7 +165,7 @@ union ieee754dp ieee754dp_format(int sn, int xe, u64 xm)
 	/* strip grs bits */
 	xm >>= 3;
 
-	assert((xm >> (DP_FBITS + 1)) == 0);	/* no execess */
+	assert((xm >> (DP_FBITS + 1)) == 0);	/* no excess */
 	assert(xe >= DP_EMIN);
 
 	if (xe > DP_EMAX) {
@@ -198,7 +198,7 @@ union ieee754dp ieee754dp_format(int sn, int xe, u64 xm)
 			ieee754_setcx(IEEE754_UNDERFLOW);
 		return builddp(sn, DP_EMIN - 1 + DP_EBIAS, xm);
 	} else {
-		assert((xm >> (DP_FBITS + 1)) == 0);	/* no execess */
+		assert((xm >> (DP_FBITS + 1)) == 0);	/* no excess */
 		assert(xm & DP_HIDDEN_BIT);
 
 		return builddp(sn, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT);

arch/mips/math-emu/ieee754sp.c

@@ -97,7 +97,7 @@ union ieee754sp ieee754sp_format(int sn, int xe, unsigned xm)
 {
 	assert(xm);		/* we don't gen exact zeros (probably should) */
 
-	assert((xm >> (SP_FBITS + 1 + 3)) == 0);	/* no execess */
+	assert((xm >> (SP_FBITS + 1 + 3)) == 0);	/* no excess */
 	assert(xm & (SP_HIDDEN_BIT << 3));
 
 	if (xe < SP_EMIN) {
@@ -163,7 +163,7 @@ union ieee754sp ieee754sp_format(int sn, int xe, unsigned xm)
 	/* strip grs bits */
 	xm >>= 3;
 
-	assert((xm >> (SP_FBITS + 1)) == 0);	/* no execess */
+	assert((xm >> (SP_FBITS + 1)) == 0);	/* no excess */
 	assert(xe >= SP_EMIN);
 
 	if (xe > SP_EMAX) {
@@ -196,7 +196,7 @@ union ieee754sp ieee754sp_format(int sn, int xe, unsigned xm)
 			ieee754_setcx(IEEE754_UNDERFLOW);
 		return buildsp(sn, SP_EMIN - 1 + SP_EBIAS, xm);
 	} else {
-		assert((xm >> (SP_FBITS + 1)) == 0);	/* no execess */
+		assert((xm >> (SP_FBITS + 1)) == 0);	/* no excess */
 		assert(xm & SP_HIDDEN_BIT);
 
 		return buildsp(sn, xe + SP_EBIAS, xm & ~SP_HIDDEN_BIT);

arch/mips/mm/sc-ip22.c

@@ -158,7 +158,7 @@ static inline int __init indy_sc_probe(void)
 	return 1;
 }
 
-/* XXX Check with wje if the Indy caches can differenciate between
+/* XXX Check with wje if the Indy caches can differentiate between
    writeback + invalidate and just invalidate.	*/
 static struct bcache_ops indy_sc_ops = {
 	.bc_enable = indy_sc_enable,

arch/mips/mm/tlb-r4k.c

@@ -19,6 +19,7 @@
 #include <asm/cpu.h>
 #include <asm/cpu-type.h>
 #include <asm/bootinfo.h>
+#include <asm/hazards.h>
 #include <asm/mmu_context.h>
 #include <asm/pgtable.h>
 #include <asm/tlb.h>
@@ -486,6 +487,10 @@ static void r4k_tlb_configure(void)
 	 *     be set to fixed-size pages.
 	 */
 	write_c0_pagemask(PM_DEFAULT_MASK);
+	back_to_back_c0_hazard();
+	if (read_c0_pagemask() != PM_DEFAULT_MASK)
+		panic("MMU doesn't support PAGE_SIZE=0x%lx", PAGE_SIZE);
+
 	write_c0_wired(0);
 	if (current_cpu_type() == CPU_R10000 ||
 	    current_cpu_type() == CPU_R12000 ||

arch/mips/mm/tlbex.c

@@ -12,7 +12,7 @@
  * Copyright (C) 2011  MIPS Technologies, Inc.
  *
  * ... and the days got worse and worse and now you see
- * I've gone completly out of my mind.
+ * I've gone completely out of my mind.
  *
  * They're coming to take me a away haha
  * they're coming to take me a away hoho hihi haha