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Wed, 6 Aug 2025 23:31:55 +0000 Message-ID: Date: Wed, 6 Aug 2025 16:31:54 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5] x86/cpu/intel: Fix the constant_tsc model check for Pentium 4 To: Suchit Karunakaran , , , , , , , , CC: , , , References: <20250806153433.9070-1-suchitkarunakaran@gmail.com> Content-Language: en-US From: Sohil Mehta In-Reply-To: <20250806153433.9070-1-suchitkarunakaran@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BYAPR01CA0071.prod.exchangelabs.com (2603:10b6:a03:94::48) To BYAPR11MB3320.namprd11.prod.outlook.com (2603:10b6:a03:18::25) Precedence: bulk X-Mailing-List: linux-kernel-mentees@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BYAPR11MB3320:EE_|IA4PR11MB9035:EE_ X-MS-Office365-Filtering-Correlation-Id: f0d40aff-3d52-4af0-7790-08ddd5416e29 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014|7416014|7053199007; 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This was correctly captured until commit fadb6f569b10 > ("x86/cpu/intel: Limit the non-architectural constant_tsc model checks"). > > In that commit, an error was introduced while selecting the last P4 > model (0x06) as the upper bound. Model 0x06 was transposed to > INTEL_P4_WILLAMETTE, which is just plain wrong. That was presumably a > simple typo, probably just copying and pasting the wrong P4 model. > > Fix the constant TSC logic to cover all later P4 models. End at > INTEL_P4_CEDARMILL which accurately corresponds to the last P4 model. > > Fixes: fadb6f569b10 ("x86/cpu/intel: Limit the non-architectural constant_tsc model checks") > Cc: # v6.15 > Signed-off-by: Suchit Karunakaran > --- Reviewed-by: Sohil Mehta