From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760196Ab1LPRFo (ORCPT ); Fri, 16 Dec 2011 12:05:44 -0500 Received: from home.keithp.com ([63.227.221.253]:34647 "EHLO keithp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752189Ab1LPRFi (ORCPT ); Fri, 16 Dec 2011 12:05:38 -0500 From: Keith Packard To: tino.keitel+xorg@tikei.de, Daniel Vetter , Rocko Requin , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [Intel-gfx] kernel BUG at drivers/gpu/drm/i915/i915_gem In-Reply-To: <20111216163839.GA7884@x61.home> References: <20111214195751.GA31690@mac.home> <20111215185415.GA3445@mac.home> <20111216163839.GA7884@x61.home> User-Agent: Notmuch/0.10.2 (http://notmuchmail.org) Emacs/23.3.1 (i486-pc-linux-gnu) Date: Fri, 16 Dec 2011 09:06:33 -0800 Message-ID: <864nx08mzq.fsf@sumi.keithp.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-=-= Content-Transfer-Encoding: quoted-printable On Fri, 16 Dec 2011 17:38:39 +0100, tino.keitel+xorg@tikei.de wrote: > Hum, could this be related to the RC6 vs. IOMMU issue? I have > CONFIG_INTEL_IOMMU enabled in 3.2, and disabled in 3.1, and boot with > i915.i915_enable_rc6=3D1. Very likely -- RC6 and semaphores are not compatible with IOMMU. You should be able to just disable VTd in your BIOS and use the kernel with IOMMU enabled. =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIVAwUBTut6mTYtFsjWk68qAQjt6hAAtvF6peXrhxwnowVSZO5OS016zfX3ciqf 8rf3Sw/1J/+PMxf7Cxw3AY+CuBybQg7HDmZnWvrvfdhHdJ9HEvjALxUBYXD6bh3L RA6ZrIK1AHLHQa1utG5XYym26Ayy6bAfJC0ExU0EhElbpZiveaZolRbsUQRWKRCv fAmDWjiSXRaxXWWakqTNUrJtlON/+b/xnAs/wC3hMK7qp6XzAvFWXqzOg1Q4K6gI lE5KynAHjTtfwbh+6x6h0/Ps71rPF+ODdUjo/Hp51jWlUguqVeJIFDvpphZOyYbM v0eBEYNRcSjYTHXou32PEbTYY2G1M82Y1k29AmXQKrkrA/9fWBAuInlaLu4px8Nn GZqZS8nIUmPseLObWfVMBkw0ja9tszatnh4GkunwFIiRCp3CUscIZiD6NPK2aOji m2xdVRXGovck6iUWqU9w+gxqkjSu0WSWCKooyy9ejKbHS2dGsTOIms0z8ig+LAD8 NUkKKqr5cxg9um81GnVrwg/ld3Bfil8QijINDqiIr1TctbvsHCAMca49TuzwNNa9 yCCkoIU0GWCofxgBGig5qTNMEz5MgJoZSNorDdLQnsgAwG2dj+jGIfxsHOWL+apG FPpqFACQGEtXj5Vd1ZHh36krHBwPsqG6BPxFd0pK9mn1EwvZN3NGQZiKMreWK60/ nDeW1syVWmM= =RRHE -----END PGP SIGNATURE----- --=-=-=--