x86/mce, EDAC/mce_amd: Print MCA_SYND and MCA_IPID during MCE on SMCA systems

The MCA_SYND and MCA_IPID registers contain valuable information and
should be included in MCE output. The MCA_SYND register contains
syndrome and other error information, and the MCA_IPID register will
uniquely identify the MCA bank's type without having to rely on system
software.

Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1472680624-34221-2-git-send-email-Yazen.Ghannam@amd.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 17e9ff011c0e..7d905e3d58a2 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -293,6 +293,13 @@ static void print_mce(struct mce *m)
         if (m->misc)
                 pr_cont("MISC %llx ", m->misc);
 
+        if (mce_flags.smca) {
+                if (m->synd)
+                        pr_cont("SYND %llx ", m->synd);
+                if (m->ipid)
+                        pr_cont("IPID %llx ", m->ipid);
+        }
+
         pr_cont("\n");
         /*
          * Note this output is parsed by external tools and old fields
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 99b3bf3f4182..e8855a4f92d9 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -984,6 +984,8 @@ int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
                 if (m->status & MCI_STATUS_SYNDV)
                         pr_cont(", Syndrome: 0x%016llx", m->synd);
 
+                pr_cont(", IPID: 0x%016llx", m->ipid);
+
                 pr_cont("\n");
 
                 decode_smca_errors(m);