linux-kernel - [tip:ras/core] x86/mce: Reuse one of the u16 padding fields in ' struct mce'

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Message-ID: <tip-20d51a426fe9a0d0a63cc3a7488f621c8bac37e1@git.kernel.org>
Date:	Thu, 13 Aug 2015 03:45:51 -0700
From:	tip-bot for Borislav Petkov <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	peterz@...radead.org, torvalds@...ux-foundation.org,
	tglx@...utronix.de, hpa@...or.com, bp@...e.de, mingo@...nel.org,
	linux-kernel@...r.kernel.org, tony.luck@...el.com
Subject: [tip:ras/core] x86/mce: Reuse one of the u16 padding fields in '
 struct mce'

Commit-ID:  20d51a426fe9a0d0a63cc3a7488f621c8bac37e1
Gitweb:     http://git.kernel.org/tip/20d51a426fe9a0d0a63cc3a7488f621c8bac37e1
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Wed, 12 Aug 2015 18:29:33 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 13 Aug 2015 10:12:50 +0200

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@...e.de>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Tony Luck <tony.luck@...el.com>
Link: http://lkml.kernel.org/r/1439396985-12812-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/include/uapi/asm/mce.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/uapi/asm/mce.h b/arch/x86/include/uapi/asm/mce.h
index a0eab85..76880ed 100644
--- 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 */
--
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