From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756057AbZBYRmi (ORCPT ); Wed, 25 Feb 2009 12:42:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753492AbZBYRm3 (ORCPT ); Wed, 25 Feb 2009 12:42:29 -0500 Received: from gw.goop.org ([64.81.55.164]:55190 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753382AbZBYRm3 (ORCPT ); Wed, 25 Feb 2009 12:42:29 -0500 Message-ID: <49A58301.2030109@goop.org> Date: Wed, 25 Feb 2009 09:42:25 -0800 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.19 (X11/20090105) MIME-Version: 1.0 To: Ingo Molnar CC: Linux Kernel Mailing List , Mark McLoughlin , Xen-devel , Stable Kernel Subject: [PATCH] xen: disable interrupts early, as start_kernel expects X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This avoids a lockdep warning from: if (DEBUG_LOCKS_WARN_ON(unlikely(!early_boot_irqs_enabled))) return; in trace_hardirqs_on_caller(); Signed-off-by: Jeremy Fitzhardinge diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 95ff6a0..905cc1c 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -939,6 +939,9 @@ asmlinkage void __init xen_start_kernel(void) possible map and a non-dummy shared_info. */ per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0]; + local_irq_disable(); + early_boot_irqs_off(); + xen_raw_console_write("mapping kernel into physical memory\n"); pgd = xen_setup_kernel_pagetable(pgd, xen_start_info->nr_pages);