linux-kernel - [tip:ras/core] x86/mce, EDAC/mce_amd: Print MCA_SYND and MCA

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Date:   Tue, 13 Sep 2016 06:32:42 -0700
From:   tip-bot for Yazen Ghannam <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     Yazen.Ghannam@....com, tglx@...utronix.de, bp@...e.de,
        linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org
Subject: [tip:ras/core] x86/mce, EDAC/mce_amd: Print MCA_SYND and MCA_IPID
 during MCE on SMCA systems

Commit-ID:  4b711f92c9b21878794597997ecda1428acc334c
Gitweb:     http://git.kernel.org/tip/4b711f92c9b21878794597997ecda1428acc334c
Author:     Yazen Ghannam <Yazen.Ghannam@....com>
AuthorDate: Mon, 12 Sep 2016 09:59:38 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 13 Sep 2016 15:23:13 +0200

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

---
 arch/x86/kernel/cpu/mcheck/mce.c | 7 +++++++
 drivers/edac/mce_amd.c           | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 17e9ff0..7d905e3 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 99b3bf3..e8855a4 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);