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authorYazen Ghannam <Yazen.Ghannam@amd.com>2016-11-18 17:10:22 +0300
committerBorislav Petkov <bp@suse.de>2016-11-28 19:50:12 +0300
commita6c14dce85e2d0472c4c7c1694034560d1772bc2 (patch)
treec8d17312f03c59bb3160d7f9b54cec8bc4ba9a9a /drivers/edac
parentb64ce7cd7f540c64e3fbeaeee3ddb59bc9ab1a3b (diff)
downloadlinux-a6c14dce85e2d0472c4c7c1694034560d1772bc2.tar.xz
EDAC, mce_amd: Don't report poison bit on Fam15h, bank 4
MCA_STATUS[43] has been defined as "Poison" or "Reserved" for every bank since Fam15h except for Fam15h, bank 4 in which case it's defined as part of the McaStatSubCache bitfield. Filter out that case. Reported-by: Dean Liberty <Dean.Liberty@amd.com> Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: x86-ml <x86@kernel.org> Link: http://lkml.kernel.org/r/1479478222-19896-1-git-send-email-Yazen.Ghannam@amd.com [ Split an almost unparseable ternary conditional, add a comment. ] Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/mce_amd.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index ba2995c2cc23..34208f38c5b1 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -964,10 +964,13 @@ int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
((m->status & MCI_STATUS_PCC) ? "PCC" : "-"),
((m->status & MCI_STATUS_ADDRV) ? "AddrV" : "-"));
- if (c->x86 >= 0x15)
- pr_cont("|%s|%s",
- ((m->status & MCI_STATUS_DEFERRED) ? "Deferred" : "-"),
- ((m->status & MCI_STATUS_POISON) ? "Poison" : "-"));
+ if (c->x86 >= 0x15) {
+ pr_cont("|%s", (m->status & MCI_STATUS_DEFERRED ? "Deferred" : "-"));
+
+ /* F15h, bank4, bit 43 is part of McaStatSubCache. */
+ if (c->x86 != 0x15 || m->bank != 4)
+ pr_cont("|%s", (m->status & MCI_STATUS_POISON ? "Poison" : "-"));
+ }
if (boot_cpu_has(X86_FEATURE_SMCA)) {
u32 low, high;