From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: i915: hangcheck timer elapsed Date: Wed, 23 Nov 2011 10:04:15 +0000 Message-ID: References: <86vcqbec3v.fsf@sumi.keithp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id E0DD0A02B0 for ; Wed, 23 Nov 2011 02:04:47 -0800 (PST) In-Reply-To: <86vcqbec3v.fsf@sumi.keithp.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Keith Packard , Linus Torvalds , David Airlie , dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Tue, 22 Nov 2011 19:44:52 -0800, Keith Packard wrote: > On Tue, 22 Nov 2011 14:43:00 -0800 (PST), Linus Torvalds wrote: > > > X is hung, but I can at least switch VT's and send this from a text > > terminal.. > > Yeah, the GPU is locked up; doesn't look like we did anything wrong in > the kernel here; it's happily waiting for the GPU which isn't moving. > > Presumably a bug in either the 2D driver or Mesa. I'm betting the 2D > driver, and yes, I'm trying to fix this (by deleting code, which is > always the best way). Indeed the fix landed in 2.13.902 by removing some erroneous hardcoded maxima, and since we currently have lots of duplication in the code the video paths remained broken until 2.15.0. commit 3c5b1399e29ef577b8b91655b5e1c215d1b6dfbb Author: Chris Wilson Date: Tue Nov 9 20:20:06 2010 +0000 i915: Disable maximum state addresses As the kernel controls the relocation of state buffers, we should not hard code the maximum permissible value for them. Fixes an eventual hang with full-gtt. -Chris -- Chris Wilson, Intel Open Source Technology Centre