From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756153AbYA1UpN (ORCPT ); Mon, 28 Jan 2008 15:45:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752226AbYA1Uo7 (ORCPT ); Mon, 28 Jan 2008 15:44:59 -0500 Received: from gw.goop.org ([64.81.55.164]:41338 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751984AbYA1Uo6 (ORCPT ); Mon, 28 Jan 2008 15:44:58 -0500 Message-ID: <479E3EC6.5070800@goop.org> Date: Mon, 28 Jan 2008 12:44:54 -0800 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: "Rafael J. Wysocki" CC: Pavel Machek , Ingo Molnar , "H. Peter Anvin" , Ian Campbell , =?ISO-8859-1?Q?Mika_Penttil=E4?= , linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , "Eric W. Biederman" Subject: Re: [PATCH] x86: Construct 32 bit boot time page tables in native format. References: <1201167544.30671.64.camel@cthulhu.hellion.org.uk> <200801281625.45165.rjw@sisk.pl> <20080128194017.GA4481@ucw.cz> <200801282126.45751.rjw@sisk.pl> In-Reply-To: <200801282126.45751.rjw@sisk.pl> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Rafael J. Wysocki wrote: > Actually, no. We only do that with the kernel code mapping which should be > safe as long as TLBs are not flushed (and they aren't). > Er, what? Assuming the TLB will retain some mappings while you overwrite the pagetable is a highly dubious prospect. Are you copying the same values over, or something else? J