linux-kernel - [tip:ras/core] x86/mce: Fix order of AMD MCE init function call

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 1 Feb 2016 03:40:28 -0800
From:	tip-bot for Aravind Gopalakrishnan <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, Aravind.Gopalakrishnan@....com,
	linux-edac@...r.kernel.org, bp@...e.de,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	hpa@...or.com, bp@...en8.de, tony.luck@...el.com,
	peterz@...radead.org, mingo@...nel.org
Subject: [tip:ras/core] x86/mce: Fix order of AMD MCE init function call

Commit-ID:  bfbe0eeb769e2aff2cb1fc6845c4e4b7eac40bb3
Gitweb:     http://git.kernel.org/tip/bfbe0eeb769e2aff2cb1fc6845c4e4b7eac40bb3
Author:     Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>
AuthorDate: Mon, 25 Jan 2016 20:41:48 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 1 Feb 2016 10:53:55 +0100

x86/mce: Fix order of AMD MCE init function call

In mce_amd_feature_init() we take decisions based on mce_flags
being set or not. So the feature detection using CPUID should
naturally be ordered before we call mce_amd_feature_init().

Fix that here.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Borislav Petkov <bp@...en8.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>
Cc: linux-edac <linux-edac@...r.kernel.org>
Link: http://lkml.kernel.org/r/1453750913-4781-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/cpu/mcheck/mce.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index a006f4c..b718080 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1617,10 +1617,10 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
 	case X86_VENDOR_AMD: {
 		u32 ebx = cpuid_ebx(0x80000007);
 
-		mce_amd_feature_init(c);
 		mce_flags.overflow_recov = !!(ebx & BIT(0));
 		mce_flags.succor	 = !!(ebx & BIT(1));
 		mce_flags.smca		 = !!(ebx & BIT(3));
+		mce_amd_feature_init(c);
 
 		break;
 		}