| Message ID | 1406800033-13404-3-git-send-email-imammedo@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Il 31/07/2014 11:47, Igor Mammedov ha scritto: > Signed-off-by: Igor Mammedov <imammedo@redhat.com> > --- > arch/x86/kvm/cpuid.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c > index 38a0afe..f519823 100644 > --- a/arch/x86/kvm/cpuid.c > +++ b/arch/x86/kvm/cpuid.c > @@ -478,8 +478,9 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, > (1 << KVM_FEATURE_CLOCKSOURCE2) | > (1 << KVM_FEATURE_ASYNC_PF) | > (1 << KVM_FEATURE_PV_EOI) | > - (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT) | > (1 << KVM_FEATURE_PV_UNHALT); > + if (!static_cpu_has_bug(X86_BUG_AMD_TSC_DRIFT)) > + entry->eax |= (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT); > > if (sched_info_on()) > entry->eax |= (1 << KVM_FEATURE_STEAL_TIME); > Marcelo, is there anything we can do if the VM migrates from a sane host to a buggy one? Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 38a0afe..f519823 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -478,8 +478,9 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, (1 << KVM_FEATURE_CLOCKSOURCE2) | (1 << KVM_FEATURE_ASYNC_PF) | (1 << KVM_FEATURE_PV_EOI) | - (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT) | (1 << KVM_FEATURE_PV_UNHALT); + if (!static_cpu_has_bug(X86_BUG_AMD_TSC_DRIFT)) + entry->eax |= (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT); if (sched_info_on()) entry->eax |= (1 << KVM_FEATURE_STEAL_TIME);
Signed-off-by: Igor Mammedov <imammedo@redhat.com> --- arch/x86/kvm/cpuid.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)