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Diffstat (limited to 'arch/x86/kernel/kvmclock.c')
-rw-r--r--arch/x86/kernel/kvmclock.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 42caaef897c8..49487b488061 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -24,6 +24,7 @@
#include <linux/percpu.h>
#include <linux/hardirq.h>
#include <linux/memblock.h>
+#include <linux/sched.h>
#include <asm/x86_init.h>
#include <asm/reboot.h>
@@ -217,8 +218,10 @@ static void kvm_shutdown(void)
void __init kvmclock_init(void)
{
+ struct pvclock_vcpu_time_info *vcpu_time;
unsigned long mem;
- int size;
+ int size, cpu;
+ u8 flags;
size = PAGE_ALIGN(sizeof(struct pvclock_vsyscall_time_info)*NR_CPUS);
@@ -264,7 +267,14 @@ void __init kvmclock_init(void)
pv_info.name = "KVM";
if (kvm_para_has_feature(KVM_FEATURE_CLOCKSOURCE_STABLE_BIT))
- pvclock_set_flags(PVCLOCK_TSC_STABLE_BIT);
+ pvclock_set_flags(~0);
+
+ cpu = get_cpu();
+ vcpu_time = &hv_clock[cpu].pvti;
+ flags = pvclock_read_flags(vcpu_time);
+ if (flags & PVCLOCK_COUNTS_FROM_ZERO)
+ set_sched_clock_stable();
+ put_cpu();
}
int __init kvm_setup_vsyscall_timeinfo(void)