From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752778Ab0J0RSz (ORCPT ); Wed, 27 Oct 2010 13:18:55 -0400 Received: from mga11.intel.com ([192.55.52.93]:54784 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751881Ab0J0RSw (ORCPT ); Wed, 27 Oct 2010 13:18:52 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.58,247,1286175600"; d="scan'208";a="620871242" Message-ID: <4CC85EE6.7030608@linux.intel.com> Date: Wed, 27 Oct 2010 10:18:30 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.7) Gecko/20100713 Thunderbird/3.1.1 MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Borislav Petkov , Ian Campbell , linux-kernel@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH] x86: use pgd accessors when cloning a pgd range. References: <1288169413-29065-1-git-send-email-ian.campbell@citrix.com> <20101027104020.GA16954@a1.tnic> <4CC85839.4000507@goop.org> In-Reply-To: <4CC85839.4000507@goop.org> 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 On 10/27/2010 9:50 AM, Jeremy Fitzhardinge wrote: > > This never used to be a problem. Perhaps we can change how > clone_pgd_range is used at boot time to avoid it in the Xen case (since > we don't care about the secondary pagetable)? > Xen shouldn't have any users of this, since it's used for low-level operations like SMP bootstrap, suspend to RAM, reboot and low-level BIOS functionality. -hpa