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Tue, 19 Aug 2025 16:13:29 +0000 Message-ID: Date: Tue, 19 Aug 2025 09:13:27 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] x86/microcode/intel: Refresh the revisions that determine old_microcode Content-Language: en-US To: Andrew Cooper , Pawan Gupta CC: Dave Hansen , , "Borislav Petkov" , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Peter Zijlstra , Josh Poimboeuf , Dave Hansen , Nikolay Borisov , , References: <20250818190137.3525414-1-sohil.mehta@intel.com> <20250818190137.3525414-2-sohil.mehta@intel.com> <20250819051940.sqdjdvwupvocuf7w@desk> <0bfc7329-e13b-4781-a331-9f8898110b5f@citrix.com> From: Sohil Mehta In-Reply-To: <0bfc7329-e13b-4781-a331-9f8898110b5f@citrix.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ0PR05CA0137.namprd05.prod.outlook.com (2603:10b6:a03:33d::22) To DS0PR11MB7997.namprd11.prod.outlook.com (2603:10b6:8:125::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR11MB7997:EE_|DS0PR11MB8687:EE_ X-MS-Office365-Filtering-Correlation-Id: 5faae114-7e1d-47ca-6642-08dddf3b55c3 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|366016; 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Total number of >> entries in the table are being reduced by ~10. > Based on the diff stat, aren't the total entries increasing by 10? > That's because early in a CPUs lifecycle, microcode for the late > pre-production steppings are still included in the public repo, but > eventually dropped. > > Alas, these deletions are documented as well as everything else is in > the changelog... > I sorted the file by FMS to make it easier to spot changes going forward. Though, I don't think we can rely on the kernel history to track the microcode changes. Because there isn't a direct 1:1 mapping between the microcode releases and the kernel update. (Unless that's what you are proposing) Dave's initial commit used the Nov 2024 release, and this one is based on May 2025. There could potentially be multiple releases in the middle that added and removed stuff which would go unnoticed. Though, using the script in patch 2 it should be easy to track that (outside the kernel) if really needed. > ~Andrew