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authorYazen Ghannam <Yazen.Ghannam@amd.com>2016-09-12 09:59:40 +0200
committerThomas Gleixner <tglx@linutronix.de>2016-09-13 15:23:14 +0200
commita884675b873a0185d2626d1f304987c94cef6d74 (patch)
tree8b413a3614883cdf845911bbac82040e04fd3404 /drivers/edac
parent4f29b73bae158e3635b8f289f77376b054904ef5 (diff)
downloadlinux-a884675b873a0185d2626d1f304987c94cef6d74.tar.bz2
x86/MCE/AMD, EDAC: Handle reserved bank 4 on Fam17h properly
Bank 4 is reserved on family 0x17 and shouldn't generate any MCE records. However, broken hardware and software is not something unheard of so warn about bank 4 errors. They shouldn't be coming from bank 4 naturally but users can still use mce_amd_inj to simulate errors from it for testing purposed. Also, avoid special handling in the injector mce_amd_inj like it is being done on the older families. [ bp: Rewrite commit message and merge into one patch. Use boot_cpu_data. ] Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com> Link: http://lkml.kernel.org/r/1473384591-5323-1-git-send-email-Yazen.Ghannam@amd.com Link: http://lkml.kernel.org/r/1473384591-5323-2-git-send-email-Yazen.Ghannam@amd.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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 e8855a4f92d9..daaac2c79ca7 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -859,6 +859,9 @@ static void decode_smca_errors(struct mce *m)
if (m->bank >= ARRAY_SIZE(smca_banks))
return;
+ if (boot_cpu_data.x86 >= 0x17 && m->bank == 4)
+ pr_emerg(HW_ERR "Bank 4 is reserved on Fam17h.\n");
+
type = smca_banks[m->bank].type;
if (!type)
return;