Re: [PATCH v2 06/12] x86/cpufeatures: Add CPUID feature bit for VIBS in SVM/SEV guests

[Nikunj A Dadhania <nikunj@amd.com>]

Manali Shukla <manali.shukla@amd.com> writes:

> From: Santosh Shukla <santosh.shukla@amd.com>
>
> The virtualized IBS (VIBS) feature allows the guest to collect IBS
> samples without exiting the guest.
>
> Presence of the VIBS feature is indicated via CPUID function
> 0x8000000A_EDX[26].
>
> Signed-off-by: Santosh Shukla <santosh.shukla@amd.com>
> Signed-off-by: Manali Shukla <manali.shukla@amd.com>
> ---
>  arch/x86/include/asm/cpufeatures.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
> index 0dd44cbf7196..3c31dea00671 100644
> --- a/arch/x86/include/asm/cpufeatures.h
> +++ b/arch/x86/include/asm/cpufeatures.h
> @@ -379,6 +379,7 @@
>  #define X86_FEATURE_V_SPEC_CTRL		(15*32+20) /* "v_spec_ctrl" Virtual SPEC_CTRL */
>  #define X86_FEATURE_VNMI		(15*32+25) /* "vnmi" Virtual NMI */
>  #define X86_FEATURE_EXTLVT		(15*32+27) /* Extended Local vector Table */
> +#define X86_FEATURE_VIBS		(15*32+26) /* Virtual IBS */

Please move before EXTLVT to maintain bit position order

Regards,
Nikunj

>  #define X86_FEATURE_SVME_ADDR_CHK	(15*32+28) /* SVME addr check */
>  #define X86_FEATURE_BUS_LOCK_THRESHOLD	(15*32+29) /* Bus lock threshold */
>  #define X86_FEATURE_IDLE_HLT		(15*32+30) /* IDLE HLT intercept */
> -- 
> 2.43.0