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

From: Borislav Petkov
Date: Mon Sep 13 2021 - 09:06:58 EST

On Mon, Sep 13, 2021 at 05:48:51PM +0800, Huang Rui wrote:
> This feature flag indicates the full MSR hardware solution of AMD
> P-States, if it is not set, that means we will go with in shared
> memory hardware solution. So we name this as extension.

Nobody cares whether it is an extension except you guys. Also, having
AMD_CPPC_EXT suggests there already is AMD_CPPC. But there isn't.

So call it X86_FEATURE_AMD_CPPC, please, for simplicity's sake.