From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753191Ab0CUN6l (ORCPT ); Sun, 21 Mar 2010 09:58:41 -0400 Received: from mga09.intel.com ([134.134.136.24]:52604 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752973Ab0CUN6j (ORCPT ); Sun, 21 Mar 2010 09:58:39 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.51,283,1267430400"; d="asc'?scan'208";a="606298535" Date: Sun, 21 Mar 2010 21:58:36 +0800 From: Zhenyu Wang To: Miguel Ojeda Cc: Andrew Morton , linux-kernel@vger.kernel.org, David.Woodhouse@intel.com, dwmw2@infradead.org, eric@anholt.net, ben@decadent.org.uk, gregkh@suse.de Subject: Re: [PATCH] intel-agp.c: Fix crash when accessing nonexistent GTT entries in i915 Message-ID: <20100321135836.GA11661@zhen-devel.sh.intel.com> Reply-To: Zhenyu Wang Mail-Followup-To: Miguel Ojeda , Andrew Morton , linux-kernel@vger.kernel.org, David.Woodhouse@intel.com, dwmw2@infradead.org, eric@anholt.net, ben@decadent.org.uk, gregkh@suse.de References: <1268258994.2183.14.camel@carter> <20100311083404.GG6896@zhen-devel.sh.intel.com> <20100319132723.118cc16a.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="0OAP2g/MAC+5xKAE" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --0OAP2g/MAC+5xKAE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2010.03.20 14:04:56 +0100, Miguel Ojeda wrote: > On Fri, Mar 19, 2010 at 9:27 PM, Andrew Morton > wrote: > > On Thu, 11 Mar 2010 16:54:26 +0100 > > Miguel Ojeda wrote: > > > >> Attached dmesg, lspci -vv, config and xorg. > >> > >> When the X server crashes, the kernel does not report anything > > > > This seems to have gone all quiet? >=20 > It seems so, I was about to ping Zhenyu. Could you try recent X.org intel driver release? Your failure X log=20 showed some pretty old UMS driver's render flush time out message,=20 I think whose version never has been well tested with new kms/gem stuff. >=20 > > > > As this was a 2.6.32->2.6.32.4 regression, I assume that it's also a > > 2.6.32->2.6.33 regression? >=20 > Yep. All kernels I tested since 2.6.32.4 crash, including 2.6.32.10, > 2.6.33 and 2.6.34-rc1. See my original message for more details about > the crash. >=20 Could you bisect? I doubt it's caused by David's patch, as if it is, you will have trouble at early agp init time, instead of current problem looks like something causing rendering hang..and I can't think of how mapping GTT to a scratch page could cause problem in case GTT bar is truely 256K. --=20 Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827 --0OAP2g/MAC+5xKAE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkumJgwACgkQsQQaM014GCe2cgCbB8LJnqn7n7J++lA8Pd+TfBQb 2BQAn2sYv0DZuSniLTcf9F3cX+cGIgVl =gQHY -----END PGP SIGNATURE----- --0OAP2g/MAC+5xKAE--