[PATCH] x86/mce, edac/mce_amd: Print PPIN in machine check records

[PATCH] x86/mce, edac/mce_amd: Print PPIN in machine check records

[Smita Koralahalli]

For AMD processors that support Protected Processor Identification
Number (PPIN), the PPIN information is included in machine check records.
If present, print it along with other decoded MCA information.

Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Robert Richter <rrichter@marvell.com>
Cc: Yazen Ghannam <yazen.ghannam@amd.com>
Cc: Wei Huang <wei.huang2@amd.com>
Cc: x86@kernel.org
Cc: linux-edac@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 arch/x86/kernel/cpu/mce/core.c | 2 ++
 drivers/edac/mce_amd.c         | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index ce9120c4f740..0865349502d5 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -244,6 +244,8 @@ static void __print_mce(struct mce *m)
 		pr_cont("ADDR %llx ", m->addr);
 	if (m->misc)
 		pr_cont("MISC %llx ", m->misc);
+	if (m->ppin)
+		pr_cont("PPIN %llx ", m->ppin);
 
 	if (mce_flags.smca) {
 		if (m->synd)
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 2b5401db56ad..325aedf46ff2 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -1094,6 +1094,9 @@ amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
 	if (m->status & MCI_STATUS_ADDRV)
 		pr_emerg(HW_ERR "Error Addr: 0x%016llx\n", m->addr);
 
+	if (m->ppin)
+		pr_emerg(HW_ERR "PPIN: 0x%016llx\n", m->ppin);
+
 	if (boot_cpu_has(X86_FEATURE_SMCA)) {
 		pr_emerg(HW_ERR "IPID: 0x%016llx", m->ipid);
 
-- 
2.17.1

Re: [PATCH] x86/mce, edac/mce_amd: Print PPIN in machine check records

[Borislav Petkov]

On Tue, Jun 23, 2020 at 08:00:59AM -0500, Smita Koralahalli wrote:
> For AMD processors that support Protected Processor Identification

Not only AMD processors - Intel support it too. I've made the commit
message vendor-agnostic.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette