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Diffstat (limited to 'arch/x86/xen/enlighten.c')
-rw-r--r--arch/x86/xen/enlighten.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 777ad2f03..993b7a713 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -88,6 +88,7 @@
#include "mmu.h"
#include "smp.h"
#include "multicalls.h"
+#include "pmu.h"
EXPORT_SYMBOL_GPL(hypercall_page);
@@ -1014,8 +1015,7 @@ static void xen_write_cr0(unsigned long cr0)
static void xen_write_cr4(unsigned long cr4)
{
- cr4 &= ~X86_CR4_PGE;
- cr4 &= ~X86_CR4_PSE;
+ cr4 &= ~(X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PCE);
native_write_cr4(cr4);
}
@@ -1034,6 +1034,9 @@ static u64 xen_read_msr_safe(unsigned int msr, int *err)
{
u64 val;
+ if (pmu_msr_read(msr, &val, err))
+ return val;
+
val = native_read_msr_safe(msr, err);
switch (msr) {
case MSR_IA32_APICBASE:
@@ -1078,9 +1081,11 @@ static int xen_write_msr_safe(unsigned int msr, unsigned low, unsigned high)
/* Fast syscall setup is all done in hypercalls, so
these are all ignored. Stub them out here to stop
Xen console noise. */
+ break;
default:
- ret = native_write_msr_safe(msr, low, high);
+ if (!pmu_msr_write(msr, low, high, &ret))
+ ret = native_write_msr_safe(msr, low, high);
}
return ret;
@@ -1219,10 +1224,7 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = {
.read_msr = xen_read_msr_safe,
.write_msr = xen_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
-
- .read_tscp = native_read_tscp,
+ .read_pmc = xen_read_pmc,
.iret = xen_iret,
#ifdef CONFIG_X86_64
@@ -1271,6 +1273,10 @@ static const struct pv_apic_ops xen_apic_ops __initconst = {
static void xen_reboot(int reason)
{
struct sched_shutdown r = { .reason = reason };
+ int cpu;
+
+ for_each_online_cpu(cpu)
+ xen_pmu_finish(cpu);
if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r))
BUG();
@@ -1614,7 +1620,9 @@ asmlinkage __visible void __init xen_start_kernel(void)
early_boot_irqs_disabled = true;
xen_raw_console_write("mapping kernel into physical memory\n");
- xen_setup_kernel_pagetable((pgd_t *)xen_start_info->pt_base, xen_start_info->nr_pages);
+ xen_setup_kernel_pagetable((pgd_t *)xen_start_info->pt_base,
+ xen_start_info->nr_pages);
+ xen_reserve_special_pages();
/*
* Modify the cache mode translation tables to match Xen's PAT