From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756040AbZKQX0j (ORCPT ); Tue, 17 Nov 2009 18:26:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753650AbZKQX0i (ORCPT ); Tue, 17 Nov 2009 18:26:38 -0500 Received: from casper.infradead.org ([85.118.1.10]:53193 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751542AbZKQX0i (ORCPT ); Tue, 17 Nov 2009 18:26:38 -0500 Subject: Re: [regression] [drm:i915_gem_execbuffer] *ERROR* Execbuf while wedged From: David Woodhouse To: "schnitzelkuchen@googlemail.com" Cc: "linux-kernel@vger.kernel.org" , "Wang, Zhenyu Z" , "jbarnes@virtuousgeek.org" In-Reply-To: <200911151048.13777.schnitzelkuchen@googlemail.com> References: <200911151048.13777.schnitzelkuchen@googlemail.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 17 Nov 2009 23:26:41 +0000 Message-ID: <1258500401.6132.88.camel@macbook.infradead.org> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 (2.28.1-2.fc12) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2009-11-15 at 01:48 -0800, Michael wrote: > > After bisecting i got to the following commit: > > 176616814d700f19914d8509d9f65dec51a6ebf7 is the first bad commit > commit 176616814d700f19914d8509d9f65dec51a6ebf7 > Author: Zhenyu Wang > Date: Mon Jul 27 12:59:57 2009 +0100 > > intel_agp: Use PCI DMA API correctly on chipsets new enough to > have IOMMU There are later commits which fixed some handling of addresses >4GiB -- it's not _entirely_ unexpected that that particular point in time didn't work. It'll be using swiotlb instead of just addressing the page directly. Can you apply the patch in commit 135cbc4e (just the second part; the addition) and check whether it still fails? -- David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation