Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755177AbYKMRtT (ORCPT ); Thu, 13 Nov 2008 12:49:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754375AbYKMRpg (ORCPT ); Thu, 13 Nov 2008 12:45:36 -0500 Received: from mx2.redhat.com ([66.187.237.31]:37319 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753396AbYKMRpW (ORCPT ); Thu, 13 Nov 2008 12:45:22 -0500 From: Eduardo Habkost To: Avi Kivity , Ingo Molnar Cc: "Eric W. Biederman" , Simon Horman , Andrew Morton , Vivek Goyal , Haren Myneni , Andrey Borzenkov , mingo@redhat.com, "Rafael J. Wysocki" , Zachary Amsden , kexec@lists.infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Eduardo Habkost Subject: [PATCH 09/11] x86: asm/virtext.h: create cpu_emergency_svm_disable() Date: Thu, 13 Nov 2008 15:43:49 -0200 Message-Id: <1226598231-18311-10-git-send-email-ehabkost@redhat.com> In-Reply-To: <1226598231-18311-1-git-send-email-ehabkost@redhat.com> References: <1226598231-18311-1-git-send-email-ehabkost@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1010 Lines: 33 This function can be used by the reboot or kdump code to forcibly disable SVM on the CPU. Signed-off-by: Eduardo Habkost --- arch/x86/include/asm/virtext.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/virtext.h b/arch/x86/include/asm/virtext.h index 7281e10..e4f6bb0 100644 --- a/arch/x86/include/asm/virtext.h +++ b/arch/x86/include/asm/virtext.h @@ -142,4 +142,12 @@ static inline void cpu_svm_disable(void) wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); } +/** Makes sure SVM is disabled, if it is supported on the CPU + */ +static inline void cpu_emergency_svm_disable(void) +{ + if (cpu_has_svm(NULL)) + cpu_svm_disable(); +} + #endif /* _ASM_X86_VIRTEX_H */ -- 1.5.5.GIT -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/