From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Trippelsdorf Subject: Commit ecff665f5e3f (drm/ttm: make ttm reservation calls...) causes system hang on Radeon RS780 Date: Wed, 10 Jul 2013 11:22:11 +0200 Message-ID: <20130710092211.GB356@x4> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail.ud10.udmedia.de (ud10.udmedia.de [194.117.254.50]) by gabe.freedesktop.org (Postfix) with ESMTP id E3946E6371 for ; Wed, 10 Jul 2013 02:22:13 -0700 (PDT) Content-Disposition: inline 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: dri-devel@lists.freedesktop.org Cc: Dave Airlie , Jerome Glisse List-Id: dri-devel@lists.freedesktop.org By simply copy/pasting a big document under LibreOffice my system hangs itself up. Only a hard reset gets it working again. see also: https://bugs.freedesktop.org/show_bug.cgi?id=66551 I've bisected the issue to: commit ecff665f5e3f1c6909353e00b9420e45ae23d995 Author: Maarten Lankhorst Date: Thu Jun 27 13:48:17 2013 +0200 drm/ttm: make ttm reservation calls behave like reservation calls This commit converts the source of the val_seq counter to the ww_mutex api. The reservation objects are converted later, because there is still a lockdep splat in nouveau that has to resolved first. Signed-off-by: Maarten Lankhorst Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie -- Markus