Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263070AbVCQN4T (ORCPT ); Thu, 17 Mar 2005 08:56:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263076AbVCQN4T (ORCPT ); Thu, 17 Mar 2005 08:56:19 -0500 Received: from clock-tower.bc.nu ([81.2.110.250]:15799 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S263070AbVCQN4Q (ORCPT ); Thu, 17 Mar 2005 08:56:16 -0500 Subject: Re: [PATCH] Xen/i386 cleanups - AGP bus/phys cleanups From: Alan Cox To: Paul Mackerras Cc: Keir Fraser , Jesse Barnes , akpm@osdl.org, Linux Kernel Mailing List , riel@redhat.com, Ian.Pratt@cl.cam.ac.uk, kurt@garloff.de, Christian.Limpach@cl.cam.ac.uk In-Reply-To: <16953.20279.77584.501222@cargo.ozlabs.ibm.com> References: <16952.41973.751326.592933@cargo.ozlabs.ibm.com> <200503161406.01788.jbarnes@engr.sgi.com> <29ab1884ee5724e9efcfe43f14d13376@cl.cam.ac.uk> <16953.20279.77584.501222@cargo.ozlabs.ibm.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1111067594.1213.27.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Thu, 17 Mar 2005 13:53:30 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 642 Lines: 17 On Iau, 2005-03-17 at 09:34, Paul Mackerras wrote: > This code needs real physical addresses, which are not the same things > as bus addresses. Not always. The code needs platform specific goodies. We've only never been burned so far because there isn't a box with an IOMMU and AGPGART where one maps through the other. It's probably simplest to have phys_to_agp/agp_to_phys therefore ? Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/