|
|
@@ -1,63 +1,21 @@
|
|
|
-/*
|
|
|
- * Xen SMP support
|
|
|
- *
|
|
|
- * This file implements the Xen versions of smp_ops. SMP under Xen is
|
|
|
- * very straightforward. Bringing a CPU up is simply a matter of
|
|
|
- * loading its initial context and setting it running.
|
|
|
- *
|
|
|
- * IPIs are handled through the Xen event mechanism.
|
|
|
- *
|
|
|
- * Because virtual CPUs can be scheduled onto any real CPU, there's no
|
|
|
- * useful topology information for the kernel to make use of. As a
|
|
|
- * result, all CPUs are treated as if they're single-core and
|
|
|
- * single-threaded.
|
|
|
- */
|
|
|
-#include <linux/sched.h>
|
|
|
-#include <linux/err.h>
|
|
|
-#include <linux/slab.h>
|
|
|
#include <linux/smp.h>
|
|
|
-#include <linux/irq_work.h>
|
|
|
-#include <linux/tick.h>
|
|
|
-#include <linux/nmi.h>
|
|
|
-
|
|
|
-#include <asm/paravirt.h>
|
|
|
-#include <asm/desc.h>
|
|
|
-#include <asm/pgtable.h>
|
|
|
-#include <asm/cpu.h>
|
|
|
-
|
|
|
-#include <xen/interface/xen.h>
|
|
|
-#include <xen/interface/vcpu.h>
|
|
|
-#include <xen/interface/xenpmu.h>
|
|
|
-
|
|
|
-#include <asm/xen/interface.h>
|
|
|
-#include <asm/xen/hypercall.h>
|
|
|
+#include <linux/slab.h>
|
|
|
+#include <linux/cpumask.h>
|
|
|
+#include <linux/percpu.h>
|
|
|
|
|
|
-#include <xen/xen.h>
|
|
|
-#include <xen/page.h>
|
|
|
#include <xen/events.h>
|
|
|
|
|
|
#include <xen/hvc-console.h>
|
|
|
#include "xen-ops.h"
|
|
|
-#include "mmu.h"
|
|
|
#include "smp.h"
|
|
|
-#include "pmu.h"
|
|
|
-
|
|
|
-cpumask_var_t xen_cpu_initialized_map;
|
|
|
|
|
|
-struct xen_common_irq {
|
|
|
- int irq;
|
|
|
- char *name;
|
|
|
-};
|
|
|
static DEFINE_PER_CPU(struct xen_common_irq, xen_resched_irq) = { .irq = -1 };
|
|
|
static DEFINE_PER_CPU(struct xen_common_irq, xen_callfunc_irq) = { .irq = -1 };
|
|
|
static DEFINE_PER_CPU(struct xen_common_irq, xen_callfuncsingle_irq) = { .irq = -1 };
|
|
|
-static DEFINE_PER_CPU(struct xen_common_irq, xen_irq_work) = { .irq = -1 };
|
|
|
static DEFINE_PER_CPU(struct xen_common_irq, xen_debug_irq) = { .irq = -1 };
|
|
|
-static DEFINE_PER_CPU(struct xen_common_irq, xen_pmu_irq) = { .irq = -1 };
|
|
|
|
|
|
static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id);
|
|
|
static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id);
|
|
|
-static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id);
|
|
|
|
|
|
/*
|
|
|
* Reschedule call back.
|
|
|
@@ -70,42 +28,6 @@ static irqreturn_t xen_reschedule_interrupt(int irq, void *dev_id)
|
|
|
return IRQ_HANDLED;
|
|
|
}
|
|
|
|
|
|
-static void cpu_bringup(void)
|
|
|
-{
|
|
|
- int cpu;
|
|
|
-
|
|
|
- cpu_init();
|
|
|
- touch_softlockup_watchdog();
|
|
|
- preempt_disable();
|
|
|
-
|
|
|
- /* PVH runs in ring 0 and allows us to do native syscalls. Yay! */
|
|
|
- if (!xen_feature(XENFEAT_supervisor_mode_kernel)) {
|
|
|
- xen_enable_sysenter();
|
|
|
- xen_enable_syscall();
|
|
|
- }
|
|
|
- cpu = smp_processor_id();
|
|
|
- smp_store_cpu_info(cpu);
|
|
|
- cpu_data(cpu).x86_max_cores = 1;
|
|
|
- set_cpu_sibling_map(cpu);
|
|
|
-
|
|
|
- xen_setup_cpu_clockevents();
|
|
|
-
|
|
|
- notify_cpu_starting(cpu);
|
|
|
-
|
|
|
- set_cpu_online(cpu, true);
|
|
|
-
|
|
|
- cpu_set_state_online(cpu); /* Implies full memory barrier. */
|
|
|
-
|
|
|
- /* We can take interrupts now: we're officially "up". */
|
|
|
- local_irq_enable();
|
|
|
-}
|
|
|
-
|
|
|
-asmlinkage __visible void cpu_bringup_and_idle(void)
|
|
|
-{
|
|
|
- cpu_bringup();
|
|
|
- cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
|
|
|
-}
|
|
|
-
|
|
|
void xen_smp_intr_free(unsigned int cpu)
|
|
|
{
|
|
|
if (per_cpu(xen_resched_irq, cpu).irq >= 0) {
|
|
|
@@ -135,23 +57,6 @@ void xen_smp_intr_free(unsigned int cpu)
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-void xen_smp_intr_free_pv(unsigned int cpu)
|
|
|
-{
|
|
|
- if (per_cpu(xen_irq_work, cpu).irq >= 0) {
|
|
|
- unbind_from_irqhandler(per_cpu(xen_irq_work, cpu).irq, NULL);
|
|
|
- per_cpu(xen_irq_work, cpu).irq = -1;
|
|
|
- kfree(per_cpu(xen_irq_work, cpu).name);
|
|
|
- per_cpu(xen_irq_work, cpu).name = NULL;
|
|
|
- }
|
|
|
-
|
|
|
- if (per_cpu(xen_pmu_irq, cpu).irq >= 0) {
|
|
|
- unbind_from_irqhandler(per_cpu(xen_pmu_irq, cpu).irq, NULL);
|
|
|
- per_cpu(xen_pmu_irq, cpu).irq = -1;
|
|
|
- kfree(per_cpu(xen_pmu_irq, cpu).name);
|
|
|
- per_cpu(xen_pmu_irq, cpu).name = NULL;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
int xen_smp_intr_init(unsigned int cpu)
|
|
|
{
|
|
|
int rc;
|
|
|
@@ -209,360 +114,6 @@ int xen_smp_intr_init(unsigned int cpu)
|
|
|
return rc;
|
|
|
}
|
|
|
|
|
|
-int xen_smp_intr_init_pv(unsigned int cpu)
|
|
|
-{
|
|
|
- int rc;
|
|
|
- char *callfunc_name, *pmu_name;
|
|
|
-
|
|
|
- callfunc_name = kasprintf(GFP_KERNEL, "irqwork%d", cpu);
|
|
|
- rc = bind_ipi_to_irqhandler(XEN_IRQ_WORK_VECTOR,
|
|
|
- cpu,
|
|
|
- xen_irq_work_interrupt,
|
|
|
- IRQF_PERCPU|IRQF_NOBALANCING,
|
|
|
- callfunc_name,
|
|
|
- NULL);
|
|
|
- if (rc < 0)
|
|
|
- goto fail;
|
|
|
- per_cpu(xen_irq_work, cpu).irq = rc;
|
|
|
- per_cpu(xen_irq_work, cpu).name = callfunc_name;
|
|
|
-
|
|
|
- if (is_xen_pmu(cpu)) {
|
|
|
- pmu_name = kasprintf(GFP_KERNEL, "pmu%d", cpu);
|
|
|
- rc = bind_virq_to_irqhandler(VIRQ_XENPMU, cpu,
|
|
|
- xen_pmu_irq_handler,
|
|
|
- IRQF_PERCPU|IRQF_NOBALANCING,
|
|
|
- pmu_name, NULL);
|
|
|
- if (rc < 0)
|
|
|
- goto fail;
|
|
|
- per_cpu(xen_pmu_irq, cpu).irq = rc;
|
|
|
- per_cpu(xen_pmu_irq, cpu).name = pmu_name;
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-
|
|
|
- fail:
|
|
|
- xen_smp_intr_free_pv(cpu);
|
|
|
- return rc;
|
|
|
-}
|
|
|
-
|
|
|
-static void __init xen_fill_possible_map(void)
|
|
|
-{
|
|
|
- int i, rc;
|
|
|
-
|
|
|
- if (xen_initial_domain())
|
|
|
- return;
|
|
|
-
|
|
|
- for (i = 0; i < nr_cpu_ids; i++) {
|
|
|
- rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
|
|
|
- if (rc >= 0) {
|
|
|
- num_processors++;
|
|
|
- set_cpu_possible(i, true);
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static void __init xen_filter_cpu_maps(void)
|
|
|
-{
|
|
|
- int i, rc;
|
|
|
- unsigned int subtract = 0;
|
|
|
-
|
|
|
- if (!xen_initial_domain())
|
|
|
- return;
|
|
|
-
|
|
|
- num_processors = 0;
|
|
|
- disabled_cpus = 0;
|
|
|
- for (i = 0; i < nr_cpu_ids; i++) {
|
|
|
- rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
|
|
|
- if (rc >= 0) {
|
|
|
- num_processors++;
|
|
|
- set_cpu_possible(i, true);
|
|
|
- } else {
|
|
|
- set_cpu_possible(i, false);
|
|
|
- set_cpu_present(i, false);
|
|
|
- subtract++;
|
|
|
- }
|
|
|
- }
|
|
|
-#ifdef CONFIG_HOTPLUG_CPU
|
|
|
- /* This is akin to using 'nr_cpus' on the Linux command line.
|
|
|
- * Which is OK as when we use 'dom0_max_vcpus=X' we can only
|
|
|
- * have up to X, while nr_cpu_ids is greater than X. This
|
|
|
- * normally is not a problem, except when CPU hotplugging
|
|
|
- * is involved and then there might be more than X CPUs
|
|
|
- * in the guest - which will not work as there is no
|
|
|
- * hypercall to expand the max number of VCPUs an already
|
|
|
- * running guest has. So cap it up to X. */
|
|
|
- if (subtract)
|
|
|
- nr_cpu_ids = nr_cpu_ids - subtract;
|
|
|
-#endif
|
|
|
-
|
|
|
-}
|
|
|
-
|
|
|
-static void __init xen_pv_smp_prepare_boot_cpu(void)
|
|
|
-{
|
|
|
- BUG_ON(smp_processor_id() != 0);
|
|
|
- native_smp_prepare_boot_cpu();
|
|
|
-
|
|
|
- if (!xen_feature(XENFEAT_writable_page_tables))
|
|
|
- /* We've switched to the "real" per-cpu gdt, so make
|
|
|
- * sure the old memory can be recycled. */
|
|
|
- make_lowmem_page_readwrite(xen_initial_gdt);
|
|
|
-
|
|
|
-#ifdef CONFIG_X86_32
|
|
|
- /*
|
|
|
- * Xen starts us with XEN_FLAT_RING1_DS, but linux code
|
|
|
- * expects __USER_DS
|
|
|
- */
|
|
|
- loadsegment(ds, __USER_DS);
|
|
|
- loadsegment(es, __USER_DS);
|
|
|
-#endif
|
|
|
-
|
|
|
- xen_filter_cpu_maps();
|
|
|
- xen_setup_vcpu_info_placement();
|
|
|
-
|
|
|
- /*
|
|
|
- * The alternative logic (which patches the unlock/lock) runs before
|
|
|
- * the smp bootup up code is activated. Hence we need to set this up
|
|
|
- * the core kernel is being patched. Otherwise we will have only
|
|
|
- * modules patched but not core code.
|
|
|
- */
|
|
|
- xen_init_spinlocks();
|
|
|
-}
|
|
|
-
|
|
|
-static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
|
|
|
-{
|
|
|
- unsigned cpu;
|
|
|
- unsigned int i;
|
|
|
-
|
|
|
- if (skip_ioapic_setup) {
|
|
|
- char *m = (max_cpus == 0) ?
|
|
|
- "The nosmp parameter is incompatible with Xen; " \
|
|
|
- "use Xen dom0_max_vcpus=1 parameter" :
|
|
|
- "The noapic parameter is incompatible with Xen";
|
|
|
-
|
|
|
- xen_raw_printk(m);
|
|
|
- panic(m);
|
|
|
- }
|
|
|
- xen_init_lock_cpu(0);
|
|
|
-
|
|
|
- smp_store_boot_cpu_info();
|
|
|
- cpu_data(0).x86_max_cores = 1;
|
|
|
-
|
|
|
- for_each_possible_cpu(i) {
|
|
|
- zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
|
|
|
- zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
|
|
|
- zalloc_cpumask_var(&per_cpu(cpu_llc_shared_map, i), GFP_KERNEL);
|
|
|
- }
|
|
|
- set_cpu_sibling_map(0);
|
|
|
-
|
|
|
- xen_pmu_init(0);
|
|
|
-
|
|
|
- if (xen_smp_intr_init(0))
|
|
|
- BUG();
|
|
|
-
|
|
|
- if (!alloc_cpumask_var(&xen_cpu_initialized_map, GFP_KERNEL))
|
|
|
- panic("could not allocate xen_cpu_initialized_map\n");
|
|
|
-
|
|
|
- cpumask_copy(xen_cpu_initialized_map, cpumask_of(0));
|
|
|
-
|
|
|
- /* Restrict the possible_map according to max_cpus. */
|
|
|
- while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
|
|
|
- for (cpu = nr_cpu_ids - 1; !cpu_possible(cpu); cpu--)
|
|
|
- continue;
|
|
|
- set_cpu_possible(cpu, false);
|
|
|
- }
|
|
|
-
|
|
|
- for_each_possible_cpu(cpu)
|
|
|
- set_cpu_present(cpu, true);
|
|
|
-}
|
|
|
-
|
|
|
-static int
|
|
|
-cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
|
|
|
-{
|
|
|
- struct vcpu_guest_context *ctxt;
|
|
|
- struct desc_struct *gdt;
|
|
|
- unsigned long gdt_mfn;
|
|
|
-
|
|
|
- /* used to tell cpu_init() that it can proceed with initialization */
|
|
|
- cpumask_set_cpu(cpu, cpu_callout_mask);
|
|
|
- if (cpumask_test_and_set_cpu(cpu, xen_cpu_initialized_map))
|
|
|
- return 0;
|
|
|
-
|
|
|
- ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
|
|
|
- if (ctxt == NULL)
|
|
|
- return -ENOMEM;
|
|
|
-
|
|
|
- gdt = get_cpu_gdt_rw(cpu);
|
|
|
-
|
|
|
-#ifdef CONFIG_X86_32
|
|
|
- ctxt->user_regs.fs = __KERNEL_PERCPU;
|
|
|
- ctxt->user_regs.gs = __KERNEL_STACK_CANARY;
|
|
|
-#endif
|
|
|
- memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt));
|
|
|
-
|
|
|
- ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle;
|
|
|
- ctxt->flags = VGCF_IN_KERNEL;
|
|
|
- ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */
|
|
|
- ctxt->user_regs.ds = __USER_DS;
|
|
|
- ctxt->user_regs.es = __USER_DS;
|
|
|
- ctxt->user_regs.ss = __KERNEL_DS;
|
|
|
-
|
|
|
- xen_copy_trap_info(ctxt->trap_ctxt);
|
|
|
-
|
|
|
- ctxt->ldt_ents = 0;
|
|
|
-
|
|
|
- BUG_ON((unsigned long)gdt & ~PAGE_MASK);
|
|
|
-
|
|
|
- gdt_mfn = arbitrary_virt_to_mfn(gdt);
|
|
|
- make_lowmem_page_readonly(gdt);
|
|
|
- make_lowmem_page_readonly(mfn_to_virt(gdt_mfn));
|
|
|
-
|
|
|
- ctxt->gdt_frames[0] = gdt_mfn;
|
|
|
- ctxt->gdt_ents = GDT_ENTRIES;
|
|
|
-
|
|
|
- ctxt->kernel_ss = __KERNEL_DS;
|
|
|
- ctxt->kernel_sp = idle->thread.sp0;
|
|
|
-
|
|
|
-#ifdef CONFIG_X86_32
|
|
|
- ctxt->event_callback_cs = __KERNEL_CS;
|
|
|
- ctxt->failsafe_callback_cs = __KERNEL_CS;
|
|
|
-#else
|
|
|
- ctxt->gs_base_kernel = per_cpu_offset(cpu);
|
|
|
-#endif
|
|
|
- ctxt->event_callback_eip =
|
|
|
- (unsigned long)xen_hypervisor_callback;
|
|
|
- ctxt->failsafe_callback_eip =
|
|
|
- (unsigned long)xen_failsafe_callback;
|
|
|
- ctxt->user_regs.cs = __KERNEL_CS;
|
|
|
- per_cpu(xen_cr3, cpu) = __pa(swapper_pg_dir);
|
|
|
-
|
|
|
- ctxt->user_regs.esp = idle->thread.sp0 - sizeof(struct pt_regs);
|
|
|
- ctxt->ctrlreg[3] = xen_pfn_to_cr3(virt_to_gfn(swapper_pg_dir));
|
|
|
- if (HYPERVISOR_vcpu_op(VCPUOP_initialise, xen_vcpu_nr(cpu), ctxt))
|
|
|
- BUG();
|
|
|
-
|
|
|
- kfree(ctxt);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int xen_cpu_up(unsigned int cpu, struct task_struct *idle)
|
|
|
-{
|
|
|
- int rc;
|
|
|
-
|
|
|
- common_cpu_up(cpu, idle);
|
|
|
-
|
|
|
- xen_setup_runstate_info(cpu);
|
|
|
-
|
|
|
- /*
|
|
|
- * PV VCPUs are always successfully taken down (see 'while' loop
|
|
|
- * in xen_cpu_die()), so -EBUSY is an error.
|
|
|
- */
|
|
|
- rc = cpu_check_up_prepare(cpu);
|
|
|
- if (rc)
|
|
|
- return rc;
|
|
|
-
|
|
|
- /* make sure interrupts start blocked */
|
|
|
- per_cpu(xen_vcpu, cpu)->evtchn_upcall_mask = 1;
|
|
|
-
|
|
|
- rc = cpu_initialize_context(cpu, idle);
|
|
|
- if (rc)
|
|
|
- return rc;
|
|
|
-
|
|
|
- xen_pmu_init(cpu);
|
|
|
-
|
|
|
- rc = HYPERVISOR_vcpu_op(VCPUOP_up, xen_vcpu_nr(cpu), NULL);
|
|
|
- BUG_ON(rc);
|
|
|
-
|
|
|
- while (cpu_report_state(cpu) != CPU_ONLINE)
|
|
|
- HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void xen_smp_cpus_done(unsigned int max_cpus)
|
|
|
-{
|
|
|
-}
|
|
|
-
|
|
|
-#ifdef CONFIG_HOTPLUG_CPU
|
|
|
-static int xen_cpu_disable(void)
|
|
|
-{
|
|
|
- unsigned int cpu = smp_processor_id();
|
|
|
- if (cpu == 0)
|
|
|
- return -EBUSY;
|
|
|
-
|
|
|
- cpu_disable_common();
|
|
|
-
|
|
|
- load_cr3(swapper_pg_dir);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void xen_pv_cpu_die(unsigned int cpu)
|
|
|
-{
|
|
|
- while (HYPERVISOR_vcpu_op(VCPUOP_is_up,
|
|
|
- xen_vcpu_nr(cpu), NULL)) {
|
|
|
- __set_current_state(TASK_UNINTERRUPTIBLE);
|
|
|
- schedule_timeout(HZ/10);
|
|
|
- }
|
|
|
-
|
|
|
- if (common_cpu_die(cpu) == 0) {
|
|
|
- xen_smp_intr_free(cpu);
|
|
|
- xen_uninit_lock_cpu(cpu);
|
|
|
- xen_teardown_timer(cpu);
|
|
|
- xen_pmu_finish(cpu);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static void xen_play_dead(void) /* used only with HOTPLUG_CPU */
|
|
|
-{
|
|
|
- play_dead_common();
|
|
|
- HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(smp_processor_id()), NULL);
|
|
|
- cpu_bringup();
|
|
|
- /*
|
|
|
- * commit 4b0c0f294 (tick: Cleanup NOHZ per cpu data on cpu down)
|
|
|
- * clears certain data that the cpu_idle loop (which called us
|
|
|
- * and that we return from) expects. The only way to get that
|
|
|
- * data back is to call:
|
|
|
- */
|
|
|
- tick_nohz_idle_enter();
|
|
|
-
|
|
|
- cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
|
|
|
-}
|
|
|
-
|
|
|
-#else /* !CONFIG_HOTPLUG_CPU */
|
|
|
-static int xen_cpu_disable(void)
|
|
|
-{
|
|
|
- return -ENOSYS;
|
|
|
-}
|
|
|
-
|
|
|
-static void xen_pv_cpu_die(unsigned int cpu)
|
|
|
-{
|
|
|
- BUG();
|
|
|
-}
|
|
|
-
|
|
|
-static void xen_play_dead(void)
|
|
|
-{
|
|
|
- BUG();
|
|
|
-}
|
|
|
-
|
|
|
-#endif
|
|
|
-static void stop_self(void *v)
|
|
|
-{
|
|
|
- int cpu = smp_processor_id();
|
|
|
-
|
|
|
- /* make sure we're not pinning something down */
|
|
|
- load_cr3(swapper_pg_dir);
|
|
|
- /* should set up a minimal gdt */
|
|
|
-
|
|
|
- set_cpu_online(cpu, false);
|
|
|
-
|
|
|
- HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(cpu), NULL);
|
|
|
- BUG();
|
|
|
-}
|
|
|
-
|
|
|
-static void xen_stop_other_cpus(int wait)
|
|
|
-{
|
|
|
- smp_call_function(stop_self, NULL, wait);
|
|
|
-}
|
|
|
-
|
|
|
void xen_smp_send_reschedule(int cpu)
|
|
|
{
|
|
|
xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
|
|
|
@@ -697,36 +248,3 @@ static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id)
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
}
|
|
|
-
|
|
|
-static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id)
|
|
|
-{
|
|
|
- irq_enter();
|
|
|
- irq_work_run();
|
|
|
- inc_irq_stat(apic_irq_work_irqs);
|
|
|
- irq_exit();
|
|
|
-
|
|
|
- return IRQ_HANDLED;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct smp_ops xen_smp_ops __initconst = {
|
|
|
- .smp_prepare_boot_cpu = xen_pv_smp_prepare_boot_cpu,
|
|
|
- .smp_prepare_cpus = xen_smp_prepare_cpus,
|
|
|
- .smp_cpus_done = xen_smp_cpus_done,
|
|
|
-
|
|
|
- .cpu_up = xen_cpu_up,
|
|
|
- .cpu_die = xen_pv_cpu_die,
|
|
|
- .cpu_disable = xen_cpu_disable,
|
|
|
- .play_dead = xen_play_dead,
|
|
|
-
|
|
|
- .stop_other_cpus = xen_stop_other_cpus,
|
|
|
- .smp_send_reschedule = xen_smp_send_reschedule,
|
|
|
-
|
|
|
- .send_call_func_ipi = xen_smp_send_call_function_ipi,
|
|
|
- .send_call_func_single_ipi = xen_smp_send_call_function_single_ipi,
|
|
|
-};
|
|
|
-
|
|
|
-void __init xen_smp_init(void)
|
|
|
-{
|
|
|
- smp_ops = xen_smp_ops;
|
|
|
- xen_fill_possible_map();
|
|
|
-}
|
Vitaly Kuznetsov