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Date:   Mon, 13 Sep 2021 15:04:42 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Huang Rui <ray.huang@amd.com>
Cc:     "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Shuah Khan <skhan@linuxfoundation.org>,
        Ingo Molnar <mingo@kernel.org>,
        "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
        "Sharma, Deepak" <Deepak.Sharma@amd.com>,
        "Deucher, Alexander" <Alexander.Deucher@amd.com>,
        "Limonciello, Mario" <Mario.Limonciello@amd.com>,
        "Fontenot, Nathan" <Nathan.Fontenot@amd.com>,
        "Su, Jinzhou (Joe)" <Jinzhou.Su@amd.com>,
        "Du, Xiaojian" <Xiaojian.Du@amd.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "x86@kernel.org" <x86@kernel.org>
Subject: Re: [PATCH 01/19] x86/cpufreatures: add AMD CPPC extension feature
 flag
Message-ID: <YT9ManjgABReBVX2@zn.tnic>
References: <20210908150001.3702552-1-ray.huang@amd.com>
 <20210908150001.3702552-2-ray.huang@amd.com>
 <YTpLO6M2C0IqJ9XC@zn.tnic>
 <20210913094851.GB3731830@hr-amd>
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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.

https://people.kernel.org/tglx/notes-about-netiquette