Messages in this thread | | | Date | Wed, 05 May 2010 11:28:11 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH v2 6/7] don't compute pvclock adjustments if we trust the tsc |
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On 05/03/2010 06:52 PM, Glauber Costa wrote: > If the HV told us we can fully trust the TSC, skip any > correction > >
> Signed-off-by: Glauber Costa<glommer@redhat.com> > --- > arch/x86/include/asm/kvm_para.h | 5 +++++ > arch/x86/include/asm/pvclock-abi.h | 1 + > arch/x86/kernel/kvmclock.c | 3 +++ > arch/x86/kernel/pvclock.c | 4 ++++ > 4 files changed, 13 insertions(+), 0 deletions(-) > > diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h > index f019f8c..6f1b878 100644 > --- a/arch/x86/include/asm/kvm_para.h > +++ b/arch/x86/include/asm/kvm_para.h > @@ -21,6 +21,11 @@ > */ > #define KVM_FEATURE_CLOCKSOURCE2 3 > > +/* The last 8 bits are used to indicate how to interpret the flags field > + * in pvclock structure. If no bits are set, all flags are ignored. > + */ > +#define KVM_FEATURE_CLOCKSOURCE_STABLE_TSC 24 >
This needs documentation (in cpuid.txt). The flag doesn't mean the TSC is stable, rather it means the pvclock tsc stable bit is valid.
-- error compiling committee.c: too many arguments to function
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