Re: [RFC PATCH 02/13] x86/cpufeatures: Introduce x2AVIC CPUID bit

From: Maxim Levitsky
Date: Thu Feb 24 2022 - 11:33:17 EST


On Sun, 2022-02-20 at 20:19 -0600, Suravee Suthikulpanit wrote:
> Introduce a new feature bit for virtualized x2APIC (x2AVIC) in
> CPUID_Fn8000000A_EDX [SVM Revision and Feature Identification].
>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
> ---
> 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 6db4e2932b3d..8c91a313668e 100644
> --- a/arch/x86/include/asm/cpufeatures.h
> +++ b/arch/x86/include/asm/cpufeatures.h
> @@ -345,6 +345,7 @@
> #define X86_FEATURE_AVIC (15*32+13) /* Virtual Interrupt Controller */
> #define X86_FEATURE_V_VMSAVE_VMLOAD (15*32+15) /* Virtual VMSAVE VMLOAD */
> #define X86_FEATURE_VGIF (15*32+16) /* Virtual GIF */
> +#define X86_FEATURE_X2AVIC (15*32+18) /* Virtual x2apic */
> #define X86_FEATURE_V_SPEC_CTRL (15*32+20) /* Virtual SPEC_CTRL */
> #define X86_FEATURE_SVME_ADDR_CHK (15*32+28) /* "" SVME addr check */
>
Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>

Best regards,
Maxim Levitsky