From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754940AbZEZXzA (ORCPT ); Tue, 26 May 2009 19:55:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754531AbZEZXyl (ORCPT ); Tue, 26 May 2009 19:54:41 -0400 Received: from one.firstfloor.org ([213.235.205.2]:38572 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755408AbZEZXyl (ORCPT ); Tue, 26 May 2009 19:54:41 -0400 From: Andi Kleen To: linux-kernel@vger.kernel.org, hpa@zytor.com, x86@kernel.org Cc: Andi Kleen Subject: [PATCH 01/31] x86: MCE: Synchronize core after machine check handling Date: Wed, 27 May 2009 01:54:03 +0200 Message-Id: X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <1243382073-29338-1-git-send-email-andi@firstfloor.org> References: <1243382073-29338-1-git-send-email-andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andi Kleen Impact: Spec compliance The example code in the IA32 SDM recommends to synchronize the CPU after machine check handling. So do that here. Signed-off-by: Andi Kleen --- arch/x86/kernel/cpu/mcheck/mce.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 87f8198..249e3cf 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -328,6 +328,8 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) * Don't clear MCG_STATUS here because it's only defined for * exceptions. */ + + sync_core(); } EXPORT_SYMBOL_GPL(machine_check_poll); @@ -501,6 +503,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) mce_wrmsrl(MSR_IA32_MCG_STATUS, 0); out2: atomic_dec(&mce_entry); + sync_core(); } EXPORT_SYMBOL_GPL(do_machine_check); -- 1.6.0.2