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.

Thx.

-- 
Regards/Gruss,
    Boris.

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