From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ben Widawsky <ben@bwidawsk.net>
Subject: Re: Memory corruption starting in i915 code, in 3.2-rc5
Date: Fri, 16 Dec 2011 14:04:23 -0800
Message-ID: <4EEBC067.2050006@bwidawsk.net>
References: <4EE4F82E.9010801@palosanto.com> <86bore4z1l.fsf@sumi.keithp.com>
	<4EE520B0.1060105@palosanto.com> <4EE614E7.4010908@palosanto.com>
	<86pqftivy8.fsf@sumi.keithp.com> <4EE76BC7.4070000@palosanto.com>
	<86borcibjd.fsf@sumi.keithp.com>
	<20111213182650.GD4125@phenom.ffwll.local>
	<86ty50pbi2.fsf@sumi.keithp.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Return-path: <dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org>
Received: from cloud01.chad-versace.us (184-106-247-128.static.cloud-ips.com
	[184.106.247.128])
	by gabe.freedesktop.org (Postfix) with ESMTP id 4B3729E789
	for <dri-devel@lists.freedesktop.org>;
	Fri, 16 Dec 2011 14:04:36 -0800 (PST)
In-Reply-To: <86ty50pbi2.fsf@sumi.keithp.com>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/dri-devel>,
	<mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/dri-devel>,
	<mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org
Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org
To: Keith Packard <keithp@keithp.com>
Cc: dri-devel@lists.freedesktop.org, =?ISO-8859-1?Q?Lasso?= <a_villacis@palosanto.com>, =?ISO-8859-1?Q?Alex_Villac=ED=ADs_?=@freedesktop.org
List-Id: dri-devel@lists.freedesktop.org

On 12/16/2011 11:22 AM, Keith Packard wrote:
> On Tue, 13 Dec 2011 19:26:50 +0100, Daniel Vetter <daniel@ffwll.ch> wrote:
>> On Tue, Dec 13, 2011 at 10:14:46AM -0800, Keith Packard wrote:
>>> On Tue, 13 Dec 2011 10:14:15 -0500, Alex Villac=ED=ADs Lasso <a_villaci=
s@palosanto.com> wrote:
>>>
>>>> By using a bootable USB stick, I could check the logs, which
>>>> showed many segfaults at /lib64/ld-2.14.90.so .
>>>
>>> Ouch!
>>>
>>> Please let me know if you find anything further; I'd like to get a
>>> revert sent upstream in the next day or so.
>>
>> I think the revert is trtd. But if you revert it, please also
>> revert/disable the ilk vt-d workaound or apply one of Ben's patches,
>> because that one _does_ blow up, too.
> =

> Only if VT-d is enabled though, and that patch is now old enough that
> reverting it may cause additional problems.
> =

> Ben's patches still appear to have problems -- they don't appear to
> resolve the infinite recursion issue for unknown reasons.
> =

> I'm going to revert the patch which causes the reported regression, then
> wait for Eric to finish up his request queue cleanups and revisit this
> problem after that.

If this is referring to Dave Airlie's comment that it blows up, I think
he took that back as a bad backport on his part (maybe he can confirm).

Aside from that, I never saw anyone report my patch as bad... or good.

Ben