Re: [PATCH 01/19] x86/cpufreatures: add AMD CPPC extension feature flag

[Borislav Petkov]

On Wed, Sep 08, 2021 at 10:59:43PM +0800, Huang Rui wrote:
> Add Collaborative Processor Performance Control Extension feature flag
> for AMD processors.
> 
> Signed-off-by: Huang Rui <ray.huang@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 d0ce5cfd3ac1..f7aea50e3371 100644
> --- a/arch/x86/include/asm/cpufeatures.h
> +++ b/arch/x86/include/asm/cpufeatures.h
> @@ -313,6 +313,7 @@
>  #define X86_FEATURE_AMD_SSBD		(13*32+24) /* "" Speculative Store Bypass Disable */
>  #define X86_FEATURE_VIRT_SSBD		(13*32+25) /* Virtualized Speculative Store Bypass Disable */
>  #define X86_FEATURE_AMD_SSB_NO		(13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */
> +#define X86_FEATURE_AMD_CPPC_EXT	(13*32+27) /* Collaborative Processor Performance Control Extension */

Why not simply X86_FEATURE_AMD_CPPC ?

-- 
Regards/Gruss,
    Boris.

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