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Tue, 20 Oct 2026 17:09:49 +0000 Message-ID: Date: Tue, 20 Oct 2026 10:09:46 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] x86/mce: Do not treat cache hierarchy errors as memory errors Content-Language: en-US To: "Luck, Tony" , Adrian Schlegel CC: "bp@alien8.de" , "x86@kernel.org" , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Edgecombe, Rick P" , Dave Hansen , Yazen Ghannam References: <20261003222012.19685-1-me@adrianschlegel.com> <20261012193305.38931-1-me@adrianschlegel.com> <20261019153207.GA144824@yaz-khff2.amd.com> <7886e7b1-95fb-4338-a7bb-b6bf1da3a634@intel.com> From: Sohil Mehta In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BY3PR05CA0013.namprd05.prod.outlook.com (2603:10b6:a03:254::18) To CY8PR11MB7846.namprd11.prod.outlook.com (2603:10b6:930:79::14) X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY8PR11MB7846:EE_|LVUPR11MB9566:EE_ X-MS-Office365-Filtering-Correlation-Id: 83883519-34bd-4600-57d2-08df2eccf2dd X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|366016|376014|10067099003|6133799003|56012099006|22082099003|18002099003|4143699003|11063799006; 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All recoverable poison consumption error codes are "Cache Hierarchy Error"s. > with signature 000F 0001 RRRR TTLL. It's an uncorrected error, so the recovery > code will offline the page. > > BUT ... > > Each should be accompanied by a "Memory Error" with signature 000F 0000 1MMM CCCC > in a different machine check bank (this report originates in the memory controller that detected the ECC issue). > Okay makes sense. I am fine with the change in this patch now. Reviewed-by: Sohil Mehta If needed, the TDX side can change tdx_dump_mce_info() in case the desired "TDX private memory error. Possible kernel bug." doesn't get displayed. > This other report should be used to track uncorrected memory errors per-DIMM. Per-channel etc. > > =Tony