Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752364AbYJTBgG (ORCPT ); Sun, 19 Oct 2008 21:36:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752005AbYJTBfz (ORCPT ); Sun, 19 Oct 2008 21:35:55 -0400 Received: from home.keithp.com ([63.227.221.253]:39959 "EHLO keithp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751991AbYJTBfy (ORCPT ); Sun, 19 Oct 2008 21:35:54 -0400 Subject: Re: [git pull] agp patches for 2.6.28-rc1. From: Keith Packard To: Andres Freund Cc: keithp@keithp.com, Dave Airlie , linux-kernel@vger.kernel.org In-Reply-To: <200810200300.01411.andres@anarazel.de> References: <200810200144.44383.andres@anarazel.de> <1224461977.5303.34.camel@koto.keithp.com> <200810200300.01411.andres@anarazel.de> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-8oJ0Kojpfl6BLjhbd7WI" Date: Sun, 19 Oct 2008 18:35:21 -0700 Message-Id: <1224466521.5303.41.camel@koto.keithp.com> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1883 Lines: 54 --=-8oJ0Kojpfl6BLjhbd7WI Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Mon, 2008-10-20 at 03:00 +0200, Andres Freund wrote: > Hm. But still, there is at least one distribution (ubuntu intrepid) which= will=20 > propably will ship 2.4.1 in its stable version soon (it seems unlikely th= at=20 > they will update to an unstable version just before an release). We can backport the fix (it's tiny) to the 2.4 2D driver. > Which means, that this driver will get quite some spread... > Is it accepted that the kernel abi breaks that radically/fast? We tested a pile of hardware and didn't find any GM45s that worked, so we assumed they were all broken and that fixing the bug wouldn't cause any working configurations to stop working. We can hack up the kernel so the old X server just gets a WARN_ON instead of breaking. This is a bit worrying though; the "fix" would let user space continue to mis-program the hardware. My concern here is that a common failure mode with this bug was to lock up the graphics hardware and require a reboot. Having the X server fail to start and leave the system in text mode where new packages can be installed seems like a better mode than making the system hang during boot. --=20 keith.packard@intel.com --=-8oJ0Kojpfl6BLjhbd7WI Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iD8DBQBI++BZQp8BWwlsTdMRApUQAJwJo+Q4ztt1M2BnYp0TJ81XbPVDJgCgnl5l qQVjtcI1UxlHKM3cbomFSZU= =jc7P -----END PGP SIGNATURE----- --=-8oJ0Kojpfl6BLjhbd7WI-- -- 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/