path: root/arch/x86/include/uapi/asm
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authorTony Luck <tony.luck@intel.com>2016-11-18 09:48:36 -0800
committerThomas Gleixner <tglx@linutronix.de>2016-11-23 16:51:52 +0100
commit3f5a7896a5096fd50030a04d4c3f28a7441e30a5 (patch)
tree3ec4ee771f874daac8b1519b117f156049a29f89 /arch/x86/include/uapi/asm
parentf5382de9d4b1d67cc858c49fa6077720621576ea (diff)
x86/mce: Include the PPIN in MCE records when available
Intel Xeons from Ivy Bridge onwards support a processor identification number set in the factory. To the user this is a handy unique number to identify a particular CPU. Intel can decode this to the fab/production run to track errors. On systems that have it, include it in the machine check record. I'm told that this would be helpful for users that run large data centers with multi-socket servers to keep track of which CPUs are seeing errors. Boris: * Add some clarifying comments and spacing. * Mask out [63:2] in the disabled-but-not-locked case * Call the MSR variable "val" for more readability. Signed-off-by: Tony Luck <tony.luck@intel.com> Cc: Ashok Raj <ashok.raj@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: x86-ml <x86@kernel.org> Link: http://lkml.kernel.org/r/20161123114855.njguoaygp3qnbkia@pd.tnic Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/uapi/asm')
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/mce.h b/arch/x86/include/uapi/asm/mce.h
index 69a6e07e3149..eb6247a7009b 100644
--- a/arch/x86/include/uapi/asm/mce.h
+++ b/arch/x86/include/uapi/asm/mce.h
@@ -28,6 +28,7 @@ struct mce {
__u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */
__u64 synd; /* MCA_SYND MSR: only valid on SMCA systems */
__u64 ipid; /* MCA_IPID MSR: only valid on SMCA systems */
+ __u64 ppin; /* Protected Processor Inventory Number */
#define MCE_GET_RECORD_LEN _IOR('M', 1, int)

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