From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756394AbXGBJSS (ORCPT ); Mon, 2 Jul 2007 05:18:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752612AbXGBJSL (ORCPT ); Mon, 2 Jul 2007 05:18:11 -0400 Received: from ns1.suse.de ([195.135.220.2]:59881 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751963AbXGBJSL (ORCPT ); Mon, 2 Jul 2007 05:18:11 -0400 From: Andreas Schwab To: "Ahmed S. Darwish" Cc: Jeremy Fitzhardinge , linux-kernel@vger.kernel.org Subject: Re: [i386] Questions regarding provisional page tables initialization References: <20070701203833.GA3498@Ahmed> <46882872.7040005@goop.org> <20070702011332.GA3503@Ahmed> X-Yow: I've read SEVEN MILLION books!! Date: Mon, 02 Jul 2007 11:18:08 +0200 In-Reply-To: <20070702011332.GA3503@Ahmed> (Ahmed S. Darwish's message of "Mon\, 2 Jul 2007 04\:13\:33 +0300") Message-ID: User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.97 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Ahmed S. Darwish" writes: > yes, but isn't the displacement here (0x007) a _bytes_ displacement ?. so > effectively, %ecx now contains physical address of pg0 + 7bytes. Is it A > meaningful place/address ?. It's not pg0 + 7bytes, it is pg0 plus 3 flag bits. Since a page address is always page aligned, the low bits are reused for flags. Andreas. -- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."