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Wysocki" , Viresh Kumar , Shuah Khan , "Ingo Molnar" , "linux-pm@vger.kernel.org" , "Sharma, Deepak" , "Deucher, Alexander" , "Limonciello, Mario" , "Fontenot, Nathan" , "Su, Jinzhou (Joe)" , "Du, Xiaojian" , "linux-kernel@vger.kernel.org" , "x86@kernel.org" Subject: Re: [PATCH 01/19] x86/cpufreatures: add AMD CPPC extension feature flag Message-ID: <20210916093027.GD3755511@hr-amd> References: <20210908150001.3702552-1-ray.huang@amd.com> <20210908150001.3702552-2-ray.huang@amd.com> <20210913094851.GB3731830@hr-amd> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f15c07c5-caa9-4571-5a52-08d978f4a081 X-MS-TrafficTypeDiagnostic: CH2PR12MB3957: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(136003)(346002)(376002)(396003)(39860400002)(46966006)(36840700001)(83380400001)(8936002)(1076003)(9686003)(36860700001)(5660300002)(478600001)(70586007)(4744005)(70206006)(6916009)(86362001)(33716001)(8676002)(82310400003)(4326008)(356005)(81166007)(16526019)(186003)(2906002)(54906003)(426003)(316002)(47076005)(82740400003)(336012)(26005)(33656002)(55016002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Sep 2021 09:30:30.8691 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f15c07c5-caa9-4571-5a52-08d978f4a081 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT012.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB3957 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 13, 2021 at 09:04:42PM +0800, Borislav Petkov wrote: > 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. > OK, no problem. I will update this in V2. Thanks, Ray