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Fri, 9 Feb 2024 21:02:32 +0000 Message-ID: <4850ef1f-db20-4fb2-8658-51f27330c343@intel.com> Date: Fri, 9 Feb 2024 13:02:30 -0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] x86/MCE: Add command line option to extend MCE Records pool Content-Language: en-US To: "Luck, Tony" , "Naik, Avadhut" , "x86@kernel.org" , "linux-edac@vger.kernel.org" CC: "bp@alien8.de" , "linux-kernel@vger.kernel.org" , "yazen.ghannam@amd.com" , Avadhut Naik References: <20240207225632.159276-1-avadhut.naik@amd.com> <20240207225632.159276-3-avadhut.naik@amd.com> <8b4f8ec2-7534-4f77-b44f-6728c699ff64@intel.com> <51255499-0b5d-45c6-9c72-f353bae83c0d@amd.com> From: Sohil Mehta In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ0PR13CA0048.namprd13.prod.outlook.com (2603:10b6:a03:2c2::23) To BYAPR11MB3320.namprd11.prod.outlook.com (2603:10b6:a03:18::25) Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BYAPR11MB3320:EE_|IA1PR11MB8174:EE_ X-MS-Office365-Filtering-Correlation-Id: a68b8bf5-2840-4728-b715-08dc29b26f1c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Later, if there is really a need for some specific usage, the patch >> can be re-submitted then with the supporting data. > > There used to be a rule-of-thumb when configuring systems to have at least > one GByte of memory per CPU. Anyone following that rule shouldn't be > worried about sub-kilobyte allocations per CPU. > I meant, to avoid the need for this second patch we can always start lower and increase it later. 256 bytes per cpu seems fine to me as done in the previous patch. But, if that seems too high as described by Avadhut below then maybe we can start with 200 bytes or any other number. It's just heuristic IIUC. https://lore.kernel.org/lkml/8d2d0dac-b188-4826-a43a-bb5fc0528f0d@amd.com/ Sohil