From: Yazen Ghannam <yazen.ghan...@amd.com> Add a debugfs file which holds the error syndrome (written into MCA_SYND) of an injected error. Only write it on SMCA systems. Update README file, while at it.
Signed-off-by: Yazen Ghannam <yazen.ghan...@amd.com> Cc: Aravind Gopalakrishnan <aravindksg.l...@gmail.com> Cc: Tony Luck <tony.l...@intel.com> Cc: linux-edac <linux-e...@vger.kernel.org> Cc: x86-ml <x...@kernel.org> Link: http://lkml.kernel.org/r/1467633035-32080-3-git-send-email-yazen.ghan...@amd.com Signed-off-by: Borislav Petkov <b...@suse.de> --- arch/x86/ras/mce_amd_inj.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/x86/ras/mce_amd_inj.c b/arch/x86/ras/mce_amd_inj.c index 1104515d5ad2..ff8eb1a9ce6d 100644 --- a/arch/x86/ras/mce_amd_inj.c +++ b/arch/x86/ras/mce_amd_inj.c @@ -68,6 +68,7 @@ static int inj_##reg##_set(void *data, u64 val) \ MCE_INJECT_SET(status); MCE_INJECT_SET(misc); MCE_INJECT_SET(addr); +MCE_INJECT_SET(synd); #define MCE_INJECT_GET(reg) \ static int inj_##reg##_get(void *data, u64 *val) \ @@ -81,10 +82,12 @@ static int inj_##reg##_get(void *data, u64 *val) \ MCE_INJECT_GET(status); MCE_INJECT_GET(misc); MCE_INJECT_GET(addr); +MCE_INJECT_GET(synd); DEFINE_SIMPLE_ATTRIBUTE(status_fops, inj_status_get, inj_status_set, "%llx\n"); DEFINE_SIMPLE_ATTRIBUTE(misc_fops, inj_misc_get, inj_misc_set, "%llx\n"); DEFINE_SIMPLE_ATTRIBUTE(addr_fops, inj_addr_get, inj_addr_set, "%llx\n"); +DEFINE_SIMPLE_ATTRIBUTE(synd_fops, inj_synd_get, inj_synd_set, "%llx\n"); /* * Caller needs to be make sure this cpu doesn't disappear @@ -258,6 +261,7 @@ static void prepare_msrs(void *info) } wrmsrl(MSR_AMD64_SMCA_MCx_MISC(b), i_mce.misc); + wrmsrl(MSR_AMD64_SMCA_MCx_SYND(b), i_mce.synd); } else { wrmsrl(MSR_IA32_MCx_STATUS(b), i_mce.status); wrmsrl(MSR_IA32_MCx_ADDR(b), i_mce.addr); @@ -275,6 +279,9 @@ static void do_inject(void) if (i_mce.misc) i_mce.status |= MCI_STATUS_MISCV; + if (i_mce.synd) + i_mce.status |= MCI_STATUS_SYNDV; + if (inj_type == SW_INJ) { mce_inject_log(&i_mce); return; @@ -371,6 +378,9 @@ static const char readme_msg[] = "\t used for error thresholding purposes and its validity is indicated by\n" "\t MCi_STATUS[MiscV].\n" "\n" +"synd:\t Set MCi_SYND: provide syndrome info about the error. Only valid on\n" +"\t Scalable MCA systems, and its validity is indicated by MCi_STATUS[SyndV].\n" +"\n" "addr:\t Error address value to be written to MCi_ADDR. Log address information\n" "\t associated with the error.\n" "\n" @@ -420,6 +430,7 @@ static struct dfs_node { { .name = "status", .fops = &status_fops, .perm = S_IRUSR | S_IWUSR }, { .name = "misc", .fops = &misc_fops, .perm = S_IRUSR | S_IWUSR }, { .name = "addr", .fops = &addr_fops, .perm = S_IRUSR | S_IWUSR }, + { .name = "synd", .fops = &synd_fops, .perm = S_IRUSR | S_IWUSR }, { .name = "bank", .fops = &bank_fops, .perm = S_IRUSR | S_IWUSR }, { .name = "flags", .fops = &flags_fops, .perm = S_IRUSR | S_IWUSR }, { .name = "cpu", .fops = &extcpu_fops, .perm = S_IRUSR | S_IWUSR }, -- 2.7.3
