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authorSmita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>2021-06-28 12:27:40 -0500
committerBorislav Petkov <bp@suse.de>2021-08-09 12:35:43 +0200
commit767f4b620edadac579c9b8b6660761d4285fa6f9 (patch)
tree7f44d29a7f821648bc0cfaac290b1c1a31d5d1ce /drivers/edac
parente1ca90b7cc5cb5d3a38321cbb65ad36a59fcb574 (diff)
EDAC/mce_amd: Do not load edac_mce_amd module on guests
Hypervisors likely do not expose the SMCA feature to the guest and loading this module leads to false warnings. This module should not be loaded in guests to begin with, but people tend to do so, especially when testing kernels in VMs. And then they complain about those false warnings. Do the practical thing and do not load this module when running as a guest to avoid all that complaining. [ bp: Rewrite commit message. ] Suggested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com> Tested-by: Kim Phillips <kim.phillips@amd.com> Link: https://lkml.kernel.org/r/20210628172740.245689-1-Smita.KoralahalliChannabasappa@amd.com
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/mce_amd.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 27d56920b469..67dbf4c31271 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -1246,6 +1246,9 @@ static int __init mce_amd_init(void)
c->x86_vendor != X86_VENDOR_HYGON)
return -ENODEV;
+ if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
+ return -ENODEV;
+
if (boot_cpu_has(X86_FEATURE_SMCA)) {
xec_mask = 0x3f;
goto out;