From: Avadhut Naik Date: Fri, 13 Jun 2025 00:51:35 +0000 (+0000) Subject: EDAC/amd64: Correct number of UMCs for family 19h models 70h-7fh X-Git-Tag: v6.16-rc3~6^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b2e673ae53ef4b943f68585207a5f21cfc9a0714;p=thirdparty%2Flinux.git EDAC/amd64: Correct number of UMCs for family 19h models 70h-7fh AMD's Family 19h-based Models 70h-7fh support 4 unified memory controllers (UMC) per processor die. The amd64_edac driver, 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 60h-7Fh") Closes: https://lore.kernel.org/all/27dc093f-ce27-4c71-9e81-786150a040b6@reox.at/ Reported-by: reox Signed-off-by: Avadhut Naik Signed-off-by: Borislav Petkov (AMD) Cc: stable@kernel.org Link: https://lore.kernel.org/20250613005233.2330627-1-avadhut.naik@amd.com --- diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 58b1482a0fbb0..b681c0663203b 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 = "F19h_M70h"; + pvt->max_mcs = 4; pvt->flags.zn_regs_v2 = 1; break; case 0x90 ... 0x9f: