From: Yazen Ghannam <[email protected]> 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. Signed-off-by: Yazen Ghannam <[email protected]> Reviewed-by: Aravind Gopalakrishnan <[email protected]> Cc: linux-edac <[email protected]> Cc: x86-ml <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Link: http://lkml.kernel.org/r/[email protected] [ Rewrite commit message and merge into one patch. Use boot_cpu_data. ] Signed-off-by: Borislav Petkov <[email protected]> --- arch/x86/ras/mce_amd_inj.c | 4 +++- drivers/edac/mce_amd.c | 3 +++ 2 files changed, 6 insertions(+), 1 deletion(-) 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; -- 2.10.0
