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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?zgZ+9Q8LLVrcKitPiAIX7uQas57UiBSBSPK/C46rmTcjvIPZe1hZPvPnbQXo?= =?us-ascii?Q?qw29PhyzVnyBXqzRATNrL0wneu4AYqgtWWqBLAdcSwb1WNaCmvzIOmOIpwAt?= =?us-ascii?Q?1r2/FWbrtvaXP+3eHuFx8od6EuOsP3yxSULcZm5vu3zoaSo0FpqkI77LBzsf?= =?us-ascii?Q?5z4k81SP7ly2BeTbs55avW9NftnMri39RuUqLCTYelKwm834SzEujNu5SRKj?= =?us-ascii?Q?qJee6MaNy5z7rdNeHeg4n4uhZf8O5pe0L1d8/9Bja5wDMgRifJvBJTU7ug1p?= =?us-ascii?Q?v4APVzZ830YXu7iMDFAprGybri26bBMu9+g2e7FhU5OT/tRDXL8qHNd2G/ZU?= =?us-ascii?Q?gClTIphkm1MZD8aHXwbe1UfIxA0wh2jjMtkSs45dNYBJ5qgHEz78+rX+U2p8?= =?us-ascii?Q?gq+5ktLKOrGNpiuernM1KtqS0bBvbuJkBzM7kmwKGE8LlTlQf2IIOcZdZ3xW?= =?us-ascii?Q?CDtkA00kRcMYIShPrzdPlFJuOw24Fhiyzl+0ZmjufK08MOWHdDHsBu9Dl0oD?= =?us-ascii?Q?j34cdySGjI5vfc+HmEO/d3weh8MMIPActM3P0lvCwBlyZdERWRDh3Z3EZQKy?= =?us-ascii?Q?EF6eaciKqT6SHyIBb98DtZiE0Y7Nrio9eEMp1/ZUyci2wHs7VeIGxAlSJil9?= =?us-ascii?Q?acdDvc2a8galR8MvCxkaL+bXjrRmd7fL/QDV1AEhwdBLB/D0Wlm0f6fmvCTf?= =?us-ascii?Q?2ypLYzYXhqfUP1pxGbxU7LzjQFU+VOx/BVQEHftnCRDO6ZNGw9cK2AY5HcVC?= =?us-ascii?Q?de9Z5jEzW98rJ/7Ul76omYX4cTbaTyi4vRhUcxFGYpDn6bbD+z86Z0gbPnnE?= =?us-ascii?Q?WS+/3usKEOzucaCeKntePz9JZ9hTaUzQgdwZbCuIYIxoPJGUQE5uA9su3RzR?= =?us-ascii?Q?Hrt01XcxZZpQH6BQKbBm3296LaLwsckQUqRjXSNarUue5MAOmf2mnJNzG9/L?= =?us-ascii?Q?me+Q/FcF58IiCTf/CT1IFdkFDDX48/1wCgosyGW1anCnFug4FwRODUYuqSzD?= =?us-ascii?Q?AkEgpFC0aJx2d3uOZiQuPEJrSMohEJsNEPyakGdcOyx1imy3i63COk+aOmQI?= =?us-ascii?Q?YISPn2C3uKv0midBlHoUY4Wy3KwpktNiclMPxE1qnFrYdK9G6RO2DFmTV1LZ?= =?us-ascii?Q?yqTl+btTB2fgRJDEcZk7HXJX5on/OQbZeucbDRpiJ6z2ratItPPii80KxP/6?= =?us-ascii?Q?qKuPdbGNjo/WHVCMC/FoWQIjgCADGOG+mtjtDlDnyAbDKz4doijXxTd1eTqv?= =?us-ascii?Q?FhNplqw9lvYlJpvd/1+MvWWTXgDzZCIGQjBl4s7MfEC7VutffIcDG22ZKLCt?= =?us-ascii?Q?oIoa8HotVfBlTCJFq5ViCAXfuzYcEP383g2aFCCNsUuhcl/UAqqJ5k0Aqcjs?= =?us-ascii?Q?C8DeUIju0o4SxwrIVP2ETnE06n60AymxPX0N+zDN2slt9m/RQN8velVPkcH2?= =?us-ascii?Q?pLJsLoSaJIKQn1RtT392/3ypyYc29o5GQj6p2zH4r/Dm2HNAIBThXePNeurA?= =?us-ascii?Q?ZQmsQ0xUiJKmK/153nw+USVP1/R2oaN68dVuRCoUNq/HnL/7LFbvtnN67Irl?= =?us-ascii?Q?bN+aQ8Oh8DcDJIm+/PFU2tvBX2YA7fZx/V57kP2JKlmxqyDm0bNeKr01XqWs?= =?us-ascii?Q?JYyFD6HNNjYP0Xsv9/WwTSd8Zjkq7vD3cZpdRCcwlsAvc+82m5QELS4ee1Fo?= =?us-ascii?Q?2gGvU6EsfJ8EnuGwwdzG6+WVGeeO/GRoJLNDM3j1lSEg8lHVktZCYO9bZ6eI?= =?us-ascii?Q?hftHgFtdoA=3D=3D?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 285d237c-0704-4134-94b3-08dec6413b8c X-MS-Exchange-CrossTenant-AuthSource: DM4PR12MB6374.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2026 16:07:41.0368 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: w+r7Zj5QUird/aZDs5V1YdNbQyQqukBN+g80QWgUStAY8JOmVCEs8XHprXIYDI/60K62HLn281hpZSs0gHkKSg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8840 On Mon, Jun 08, 2026 at 07:26:07AM +0000, Phineas Su wrote: > On CPU-only systems using AMD Zen4 (Genoa) and newer processors, memory > ECC errors can be reported with an incorrect Node ID (incremented by 1). > This happens because these CPUs use SMCA_UMC_V2 banks, which triggers > the GPU node ID fixup logic in fixup_node_id(). > Can you please share the MCA_IPID register value for these banks? The statement 'Zen4 and newer processors...use SMCA_UMC_V2 banks' isn't generally true. This system may be a special case. Or there may be a hardware issue. Or there may be a bug in the kernel enumeration code. Thanks, Yazen