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x86/MCE/AMD, EDAC: Handle reserved bank 4 on Fam17h properly

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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 <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Reviewed-by: Aravind Gopalakrishnan  <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Yazen Ghannam 2016-09-12 09:59:40 +02:00 • committed by Thomas Gleixner
commit a884675b87
2 changed files with 6 additions and 1 deletions
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3
drivers/edac/mce_amd.c
View file

@ -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;