From a884675b873a0185d2626d1f304987c94cef6d74 Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Mon, 12 Sep 2016 09:59:40 +0200 Subject: 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 Signed-off-by: Borislav Petkov Reviewed-by: Aravind Gopalakrishnan 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 --- drivers/edac/mce_amd.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/edac/mce_amd.c') diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c index e8855a4..daaac2c 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; -- cgit v1.1