From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752093AbZBNKEq (ORCPT ); Sat, 14 Feb 2009 05:04:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750898AbZBNKEh (ORCPT ); Sat, 14 Feb 2009 05:04:37 -0500 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:37712 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750834AbZBNKEg convert rfc822-to-8bit (ORCPT ); Sat, 14 Feb 2009 05:04:36 -0500 Date: Sat, 14 Feb 2009 02:04:31 -0800 (PST) Message-Id: <20090214.020431.193689843.davem@davemloft.net> To: michel@daenzer.net Cc: benh@kernel.crashing.org, airlied@linux.ie, dri-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [PATCH]: drm: radeon: Use surface for PCI GART table. From: David Miller In-Reply-To: <1234605599.4823.177.camel@thor> References: <20090214.015107.127190039.davem@davemloft.net> <1234605599.4823.177.camel@thor> X-Mailer: Mew version 6.1 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Michel Dänzer Date: Sat, 14 Feb 2009 10:59:59 +0100 > On Sat, 2009-02-14 at 01:51 -0800, David Miller wrote: > > This allocates a physical surface for the PCI GART table, this way no > > matter what other surface configurations exist the GART table will > > always be seen by the hardware properly. > > BTW, I don't think the swapping settings affect GPU access to the table, > only CPU access, but this is a good solution anyway. They absolutely and positively do effect GPU access to the table. I've proven it with many conclusive tests over the past 3 days. > This is only really necessary on big endian, but other than that: > > Acked-By: Michel Dänzer Thanks.