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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Jun 2025 00:52:41.3635 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 38bfda78-d558-4e63-b8ff-08ddaa1499de X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000055DB.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB8114 Content-Type: text/plain; charset="utf-8" AMD's Family 19h-based Models 70h-7fh support 4 UMCs per processor die. The amd64_edac module, however, assumes only 2 UMCs are supported since max_mcs variable for the models has not been explicitly set to 4. The same results in incomplete or incorrect memory information being logged to dmesg by the module during initialization in some instances. Fixes: 6c79e42169fe ("EDAC/amd64: Add support for ECC on family 19h model 6= 0h-7Fh") Reported-by: reox Closes: https://lore.kernel.org/all/27dc093f-ce27-4c71-9e81-786150a040b6@re= ox.at/ Signed-off-by: Avadhut Naik Cc: stable@kernel.org --- drivers/edac/amd64_edac.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 90f0eb7cc5b9..390f5756b66e 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -3879,6 +3879,7 @@ static int per_family_init(struct amd64_pvt *pvt) break; case 0x70 ... 0x7f: pvt->ctl_name =3D "F19h_M70h"; + pvt->max_mcs =3D 4; pvt->flags.zn_regs_v2 =3D 1; break; case 0x90 ... 0x9f: base-commit: 855b5de2e562c07d6cda4deb08d09dc2e0e2b18d --=20 2.43.0