From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757215AbZEGS6V (ORCPT ); Thu, 7 May 2009 14:58:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755472AbZEGS5c (ORCPT ); Thu, 7 May 2009 14:57:32 -0400 Received: from gw.goop.org ([64.81.55.164]:40216 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761797AbZEGS5b (ORCPT ); Thu, 7 May 2009 14:57:31 -0400 Message-ID: <4A032EEC.30509@goop.org> Date: Thu, 07 May 2009 11:56:44 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Linus Torvalds CC: Ingo Molnar , the arch/x86 maintainers , Linux Kernel Mailing List , Xen-devel Subject: [PATCH 4/5] xen/i386: reserve Xen pagetables 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 The Xen pagetables are no longer implicitly reserved as part of the other i386_start_kernel reservations, so make sure we explicitly reserve them. This prevents them from being released into the general kernel free page pool and reused. Signed-off-by: Jeremy Fitzhardinge --- arch/x86/xen/mmu.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 9842b12..e25a78e 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1794,6 +1794,11 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd, pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, PFN_DOWN(__pa(swapper_pg_dir))); + reserve_early(__pa(xen_start_info->pt_base), + __pa(xen_start_info->pt_base + + xen_start_info->nr_pt_frames * PAGE_SIZE), + "XEN PAGETABLES"); + return swapper_pg_dir; } #endif /* CONFIG_X86_64 */ -- 1.6.0.6