diff options
| author | Yazen Ghannam <Yazen.Ghannam@amd.com> | 2016-09-12 10:59:40 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-13 16:23:14 +0300 |
| commit | a884675b873a0185d2626d1f304987c94cef6d74 (patch) | |
| tree | 8b413a3614883cdf845911bbac82040e04fd3404 | |
| parent | 4f29b73bae158e3635b8f289f77376b054904ef5 (diff) | |
| download | linux-a884675b873a0185d2626d1f304987c94cef6d74.tar.xz | |
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>
| -rw-r--r-- | arch/x86/ras/mce_amd_inj.c | 4 | ||||
| -rw-r--r-- | drivers/edac/mce_amd.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/ras/mce_amd_inj.c b/arch/x86/ras/mce_amd_inj.c index ff8eb1a9ce6d..f4b442cc8a3e 100644 --- a/arch/x86/ras/mce_amd_inj.c +++ b/arch/x86/ras/mce_amd_inj.c @@ -308,7 +308,9 @@ static void do_inject(void) * only on the node base core. Refer to D18F3x44[NbMcaToMstCpuEn] for * Fam10h and later BKDGs. */ - if (static_cpu_has(X86_FEATURE_AMD_DCM) && b == 4) { + if (static_cpu_has(X86_FEATURE_AMD_DCM) && + b == 4 && + boot_cpu_data.x86 < 0x17) { toggle_nb_mca_mst_cpu(amd_get_nb_id(cpu)); cpu = get_nbc_for_node(amd_get_nb_id(cpu)); } 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; |