Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753159Ab2E3XYf (ORCPT ); Wed, 30 May 2012 19:24:35 -0400 Received: from terminus.zytor.com ([198.137.202.10]:44490 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751568Ab2E3XYd (ORCPT ); Wed, 30 May 2012 19:24:33 -0400 Date: Wed, 30 May 2012 16:23:42 -0700 From: tip-bot for Konrad Rzeszutek Wilk Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, konrad@darnok.org, andre.przywara@amd.com, stable@vger.kernel.org, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, konrad@darnok.org, andre.przywara@amd.com, tglx@linutronix.de, stable@vger.kernel.org In-Reply-To: <20120530222356.GA28417@andromeda.dapyr.net> References: <20120530222356.GA28417@andromeda.dapyr.net> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/urgent] x86, amd, xen: Avoid NULL pointer paravirt references Git-Commit-ID: 1ab46fd319bcf1fcd9fb6311727d532b580e4eba X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.6 (terminus.zytor.com [127.0.0.1]); Wed, 30 May 2012 16:23:48 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1628 Lines: 42 Commit-ID: 1ab46fd319bcf1fcd9fb6311727d532b580e4eba Gitweb: http://git.kernel.org/tip/1ab46fd319bcf1fcd9fb6311727d532b580e4eba Author: Konrad Rzeszutek Wilk AuthorDate: Wed, 30 May 2012 18:23:56 -0400 Committer: H. Peter Anvin CommitDate: Wed, 30 May 2012 16:15:02 -0700 x86, amd, xen: Avoid NULL pointer paravirt references Stub out MSR methods that aren't actually needed. This fixes a crash as Xen Dom0 on AMD Trinity systems. A bigger patch should be added to remove the paravirt machinery completely for the methods which apparently have no users! Reported-by: Andre Przywara Link: http://lkml.kernel.org/r/20120530222356.GA28417@andromeda.dapyr.net Signed-off-by: H. Peter Anvin Cc: --- arch/x86/xen/enlighten.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 75f33b2..e74df95 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1116,7 +1116,10 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = { .wbinvd = native_wbinvd, .read_msr = native_read_msr_safe, + .rdmsr_regs = native_rdmsr_safe_regs, .write_msr = xen_write_msr_safe, + .wrmsr_regs = native_wrmsr_safe_regs, + .read_tsc = native_read_tsc, .read_pmc = native_read_pmc, -- 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/