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From: Avi Kivity on 5 May 2010 04:30
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(a)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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