Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262759AbVCPTIR (ORCPT ); Wed, 16 Mar 2005 14:08:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262733AbVCPTIR (ORCPT ); Wed, 16 Mar 2005 14:08:17 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:32982 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S262759AbVCPTGS (ORCPT ); Wed, 16 Mar 2005 14:06:18 -0500 Date: Wed, 16 Mar 2005 19:06:11 +0000 From: Christoph Hellwig To: Keir Fraser Cc: Christoph Hellwig , akpm@osdl.org, Ian.Pratt@cl.cam.ac.uk, linux-kernel@vger.kernel.org, Rik van Riel , kurt@garloff.de, Christian.Limpach@cl.cam.ac.uk Subject: Re: [PATCH] Xen/i386 cleanups - AGP bus/phys cleanups Message-ID: <20050316190611.GA27945@infradead.org> Mail-Followup-To: Christoph Hellwig , Keir Fraser , akpm@osdl.org, Ian.Pratt@cl.cam.ac.uk, linux-kernel@vger.kernel.org, Rik van Riel , kurt@garloff.de, Christian.Limpach@cl.cam.ac.uk References: <20050316143130.GA21959@infradead.org> <20050316181042.GA26788@infradead.org> <521a4568db3e955cb245d10aaba2d3ce@cl.cam.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <521a4568db3e955cb245d10aaba2d3ce@cl.cam.ac.uk> User-Agent: Mutt/1.4.1i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1045 Lines: 26 On Wed, Mar 16, 2005 at 06:35:28PM +0000, Keir Fraser wrote: > > On 16 Mar 2005, at 18:10, Christoph Hellwig wrote: > > >On Wed, Mar 16, 2005 at 10:01:07AM -0500, Rik van Riel wrote: > >>In the case of AGP, the AGPGART effectively _is_ the > >>IOMMU. Calculating the addresses right for programming > >>the AGPGART is probably worth fixing. > > > >Well, it's a half-assed one. And some systems have a real one. > > > >But the real problem is that virt_to_bus doesn't exist at all > >on architectures like ppc64, and this patch touches files like > >generic.c and backend.c that aren't PC-specific. So you > >effectively break agp support for them. > > The AGP driver is only configurable for ppc32, alpha, x86, x86_64 and > ia64, all of which have virt_to_bus. and ppc64 now, which doesn't. - 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/