Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752198AbYJTAUG (ORCPT ); Sun, 19 Oct 2008 20:20:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751967AbYJTATz (ORCPT ); Sun, 19 Oct 2008 20:19:55 -0400 Received: from home.keithp.com ([63.227.221.253]:51288 "EHLO keithp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751862AbYJTATy (ORCPT ); Sun, 19 Oct 2008 20:19:54 -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: <200810200144.44383.andres@anarazel.de> References: <200810200111.06461.andres@anarazel.de> <200810200144.44383.andres@anarazel.de> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-ariQnRrjnYfXA2dxD4P6" Date: Sun, 19 Oct 2008 17:19:37 -0700 Message-Id: <1224461977.5303.34.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: 1937 Lines: 57 --=-ariQnRrjnYfXA2dxD4P6 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Mon, 2008-10-20 at 01:44 +0200, Andres Freund wrote: > Hi Dave, >=20 > On Monday 20 October 2008 01:25:22 Dave Airlie wrote: > > What type of laptop is it and what GPU has it. > > if distros are carrying GM45 supporting stuff we might be in trouble.. The GM45/G45 support in both kernel and user space was horribly broken, causing the kernel to either overwrite stolen entries with freshly allocated pages, and potentially corrupt the system, or leave some GTT entries uninitialized and cause the hardware to lock up. You appear to have a happy situation where this bug isn't obviously breaking things. We couldn't find any machines where even simple 2D graphics was stable for very long. We applied a patch to both kernel and 2D driver (as both end up computing the size of the GTT stolen area for historical reasons) to fix this mistake. Updating your 2D driver to 2.4.98 should get you the other half of the fix. > Its a Thinkpad T500 with a hybrid ATI/intel card, but the ATI card is dis= abled=20 > in bios (Intel card is not recognized properly if its enabled, havent sta= rted=20 > trying to track this down). Yeah, I'm getting information about how 'hybrid' graphics hardware works. --=20 keith.packard@intel.com --=-ariQnRrjnYfXA2dxD4P6 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+86ZQp8BWwlsTdMRApGTAJ94he7uDixwHdUn/oll5XvwWdBnBwCfddFO ZwhXHebv8rqn19oUk3FNgQc= =znIM -----END PGP SIGNATURE----- --=-ariQnRrjnYfXA2dxD4P6-- -- 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/