Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262719AbVCPSKs (ORCPT ); Wed, 16 Mar 2005 13:10:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262720AbVCPSKs (ORCPT ); Wed, 16 Mar 2005 13:10:48 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:21717 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S262719AbVCPSKo (ORCPT ); Wed, 16 Mar 2005 13:10:44 -0500 Date: Wed, 16 Mar 2005 18:10:42 +0000 From: Christoph Hellwig To: Rik van Riel Cc: Christoph Hellwig , Keir Fraser , linux-kernel@vger.kernel.org, akpm@osdl.org, kurt@garloff.de, Ian.Pratt@cl.cam.ac.uk, Christian.Limpach@cl.cam.ac.uk Subject: Re: [PATCH] Xen/i386 cleanups - AGP bus/phys cleanups Message-ID: <20050316181042.GA26788@infradead.org> Mail-Followup-To: Christoph Hellwig , Rik van Riel , Keir Fraser , linux-kernel@vger.kernel.org, akpm@osdl.org, kurt@garloff.de, Ian.Pratt@cl.cam.ac.uk, Christian.Limpach@cl.cam.ac.uk References: <20050316143130.GA21959@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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: 749 Lines: 17 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. - 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/