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Sat, 10 Feb 2024 06:49:20 +0000 Date: Fri, 9 Feb 2024 22:49:18 -0800 From: Dan Williams To: Shiyang Ruan , , CC: , Subject: RE: [RFC PATCH 4/5] cxl/core: add report option for cxl_mem_get_poison() Message-ID: <65c71c6e47244_d2d4294f0@dwillia2-xfh.jf.intel.com.notmuch> References: <20240209115417.724638-1-ruansy.fnst@fujitsu.com> <20240209115417.724638-7-ruansy.fnst@fujitsu.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20240209115417.724638-7-ruansy.fnst@fujitsu.com> X-ClientProxiedBy: MW4PR04CA0200.namprd04.prod.outlook.com (2603:10b6:303:86::25) To PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB8107:EE_|DS7PR11MB7908:EE_ X-MS-Office365-Filtering-Correlation-Id: 148c8eb4-4cdc-4ea5-8369-08dc2a04686c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?IN4Zag4ieah3zPEII1+mcTUdOUIf4jS+bdJLAQtCLna2oR7WTL2jAIK+oqd/?= =?us-ascii?Q?/aM/X5E2T6i1QXS+lqYzuZIup2GzfxaxS62ESk34XQptcRZ9/RVFJ712Or50?= =?us-ascii?Q?7wFFxlm86T/LYMQYU+jaLQCEVPsrRp8bmd9tUcj5Nb3cGkUQT6twdKg9BxeP?= =?us-ascii?Q?x7AJJmkg922AOOLnhcJF338XjKop2hYWEcQhv8epL43Wbpjl+NPA6B+q03pv?= =?us-ascii?Q?sWwIiOoRRhZ86f6iQpoId9Xdhwtjjl4ZCMLS0hWuTrKr7oAdenOPtiZeR0pv?= =?us-ascii?Q?7i1s2ftorwGjcaOmXknog+QLq2WyiowcpKVWWNl4WsVQx8z3P93imIBZ+djZ?= =?us-ascii?Q?DJNgbuaTq+jUeQ4Ox+v2rFFnX5p5EZuPJko+MGCOLlUqUKNrLWVpVXTfV1nx?= =?us-ascii?Q?gBimGnbH9X8rZo68eWF37meo1o3o0DEog81R3vLTSHIg5tqOEeeby2qug1v2?= =?us-ascii?Q?muptjGE0EMJOc1u36TnSH/vP2607iSzVi/2Z13jCQxv6UeEyaJdbC4zRghWo?= =?us-ascii?Q?cOp0dJhz2ven2xcBGo3cQ/2WKOmEe8/wG3+akOOkHeIQ27DkWYyNim4KbY78?= =?us-ascii?Q?1oU4l0eDFUsmNxl+g4phb3xkbQsbyOVfJdi6Q0u1votaE+z0Wvld4txpXDWz?= =?us-ascii?Q?7dIO+COdyDLj0imRNMzAz2YRGkARu2ws7uQGgtbycXlHUXoki6l/xOKtxFYi?= =?us-ascii?Q?kKVj9y7kLl1PW0iwM536V5v3lybUWGBPKWaJgMCCKr7Tvh/bVqIQlyojhShe?= =?us-ascii?Q?vcc2s/r5xb0NHkeEqJh6imjzGnoSL5Zd+EAwjPt/GmTLdcqYxQQpchcm506e?= =?us-ascii?Q?pQ+4gIoRomD5nhYGRdHYyJZIvlBQNc48KFm3Ht+vqZAp+DCf7LVoIyOJvRi2?= =?us-ascii?Q?tvHNbtomMk9EruwFWwc+1zATBFmoOE2dcPNSO+P0U1H22Ohb1oD+7U2Kab7K?= =?us-ascii?Q?tatBJ7zbPuSxLxCk3TGIcu3MVH0WFpP1MGmmW4FGLDIiFdd8rJ/biN4cwSD+?= =?us-ascii?Q?XDv1LrabQ2CAW1Z0wkkn2yMPFdslyl1fFnZrosq9RNbSm1+RmTPkN3g0gC/B?= =?us-ascii?Q?0bfb7JZUMojEcLQDhBi4b1fOJaVwjRRIVGZo8sJ4UH15F5uBqvrJONimIuKK?= =?us-ascii?Q?jEGT0n0QXSEaXBjKkGeiAc0qAkn1XQldGQ7armsICvvxIfyUyceXskM8/7S1?= =?us-ascii?Q?76yXiUDdrVhEQ36183BAHZ6gnIFg5E8c2CtmriQ30D00Ar/nNGzAedJXaAvr?= =?us-ascii?Q?qAE6XrG6lsA/D4WfGDHYtAcEfprcx3Hxwbi/e4SkXyy25hqwyHeSTdR6wxZE?= =?us-ascii?Q?oJrqJcOFEe8+Q79q1eeAXlFlOdN0yLA1OdImqe3D5cgcaIcRX9tvx3aES95e?= =?us-ascii?Q?nMuBwWZXup/3UJbMxc2rEuoaYnO62ylIkCBXCoe1YlnOjaSB8F2JqMcxeNEl?= =?us-ascii?Q?AGbpoVed6UvXh1ZRX4XL0Z/c5ACN229qMn3KI7C0VHHOS0oFpd+A/lZEnj8j?= =?us-ascii?Q?W3Dtl/Aqp9Y9C6laOsAuuHZ++wDdZRybx2M7Q0DSEz0AVDagDOa8QU/Swtrh?= =?us-ascii?Q?++3YASfsVTyritX7665Un3VdOWyda3zvckuGa/TkF/7D9SQz5B5See/oisC2?= =?us-ascii?Q?cg=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 148c8eb4-4cdc-4ea5-8369-08dc2a04686c X-MS-Exchange-CrossTenant-AuthSource: PH8PR11MB8107.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Feb 2024 06:49:20.0909 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: DOsdVmEJ5P2m9IwiY18uIfAQhY6E3FoORGoNcFaDMy67XRCEvi9hIyJlAZwUt/MZGSxF/4rnRtv2briocFlyJOMtmRbVrMQ3qu5c5u/QixM= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR11MB7908 X-OriginatorOrg: intel.com Shiyang Ruan wrote: > When a poison event is received, driver uses GET_POISON_LIST command > to get the poison list. Now driver has cxl_mem_get_poison(), so > reuse it and add a parameter 'bool report', report poison record to MCE > if set true. If the memory error record has the poison event, why does the poison list need to be retrieved by the kernel? I would expect it is sufficient to just report the single poison event and leave it to userspace to react to that event and retrieve more data if it wants.