x86/mce: Reuse one of the u16 padding fields in 'struct mce'

... to save the error severity of the MCE and whether the
reported address of the error is usable.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1439396985-12812-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/include/uapi/asm/mce.h b/arch/x86/include/uapi/asm/mce.h
index a0eab85ce7b8283cc5f194ec175e8076669a762f..76880ede9a359b3d4f433aff9beaaea6a17543db 100644 (file)
--- a/arch/x86/include/uapi/asm/mce.h
+++ b/arch/x86/include/uapi/asm/mce.h
@@ -15,7 +15,8 @@ struct mce {
        __u64 time;     /* wall time_t when error was detected */
        __u8  cpuvendor;        /* cpu vendor as encoded in system.h */
        __u8  inject_flags;     /* software inject flags */
-       __u16  pad;
+       __u8  severity;
+       __u8  usable_addr;
        __u32 cpuid;    /* CPUID 1 EAX */
        __u8  cs;               /* code segment */
        __u8  bank;     /* machine check bank */