Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756166AbZCMIOL (ORCPT ); Fri, 13 Mar 2009 04:14:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752478AbZCMIMP (ORCPT ); Fri, 13 Mar 2009 04:12:15 -0400 Received: from gw.goop.org ([64.81.55.164]:34786 "EHLO abulafia.goop.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752282AbZCMIMM (ORCPT ); Fri, 13 Mar 2009 04:12:12 -0400 From: Jeremy Fitzhardinge To: "H. Peter Anvin" Cc: the arch/x86 maintainers , Linux Kernel Mailing List , Xen-devel , Jeremy Fitzhardinge Subject: [PATCH 01/24] xen: disable preempt for leave_lazy_mmu Date: Fri, 13 Mar 2009 01:11:37 -0700 Message-Id: <1236931920-6861-2-git-send-email-jeremy@goop.org> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <1236931920-6861-1-git-send-email-jeremy@goop.org> References: <1236931920-6861-1-git-send-email-jeremy@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 964 Lines: 33 From: Jeremy Fitzhardinge xen_mc_flush() requires preemption to be disabled for its own sanity, so disable it while we're flushing. Signed-off-by: Jeremy Fitzhardinge --- arch/x86/xen/mmu.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 185b547..eceff87 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1812,8 +1812,10 @@ __init void xen_post_allocator_init(void) static void xen_leave_lazy_mmu(void) { + preempt_disable(); xen_mc_flush(); paravirt_leave_lazy_mmu(); + preempt_enable(); } const struct pv_mmu_ops xen_mmu_ops __initdata = { -- 1.6.0.6 -- 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/