From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755818AbZEHAbt (ORCPT ); Thu, 7 May 2009 20:31:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757042AbZEHAKw (ORCPT ); Thu, 7 May 2009 20:10:52 -0400 Received: from adsl-76-233-236-102.dsl.pltn13.sbcglobal.net ([76.233.236.102]:52725 "EHLO abulafia.goop.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755972AbZEHAKA (ORCPT ); Thu, 7 May 2009 20:10:00 -0400 From: Jeremy Fitzhardinge To: Ingo Molnar Cc: the arch/x86 maintainers , Linux Kernel Mailing List , Xen-devel , Jeremy Fitzhardinge Subject: [PATCH 7/8] xen/i386: reserve Xen pagetables Date: Thu, 7 May 2009 13:25:01 -0700 Message-Id: <1241727902-3176-8-git-send-email-jeremy@goop.org> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <1241727902-3176-1-git-send-email-jeremy@goop.org> References: <1241727902-3176-1-git-send-email-jeremy@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jeremy Fitzhardinge 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 0e13477..801d042 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1799,6 +1799,11 @@ __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