Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753166Ab3GIWlf (ORCPT ); Tue, 9 Jul 2013 18:41:35 -0400 Received: from mail-pa0-f52.google.com ([209.85.220.52]:35531 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751224Ab3GIWle (ORCPT ); Tue, 9 Jul 2013 18:41:34 -0400 Date: Tue, 9 Jul 2013 15:41:31 -0700 From: Guenter Roeck To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, David Airlie , Jesse Barnes , Mika Kuoppala Subject: Re: [PATCH] Revert "drm/i915: unconditionally use mt forcewake on hsw/ivb" Message-ID: <20130709224131.GA3097@roeck-us.net> References: <1373400849-30351-1-git-send-email-linux@roeck-us.net> <20130709203322.GC18285@phenom.ffwll.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130709203322.GC18285@phenom.ffwll.local> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1372 Lines: 30 On Tue, Jul 09, 2013 at 10:33:22PM +0200, Daniel Vetter wrote: > On Tue, Jul 09, 2013 at 01:14:09PM -0700, Guenter Roeck wrote: > > This reverts commit 36ec8f877481449bdfa072e6adf2060869e2b970. > > > > The commit results in repeated 'Timed out waiting for forcewake old ack > > to clear' messages on a Supermicro C7H61 board (BIOS version 2.00 and 2.00b) > > with i7-3770K CPU. It ultimately results in a hangup if the system is highly > > loaded. Reverting the commit fixes the issue. > > > > While I understand that this should be fixed in the BIOS, a more recent BIOS > > is not available fron the vendor. If/since no better solution is not available, > > reverting the patch seems to be the way to go (otherwise me and others with > > the same problem won't be able to run the upstream kernel on affected boards). > > > > Cc: Jesse Barnes > > Cc: Daniel Vetter > > Cc: Mika Kuoppala > > Signed-off-by: Guenter Roeck > > Can you please add the bugzilla link here? > I'll create one and add a reference. Thanks, Guenter -- 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/