From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?ISO-8859-1?Q?Christian_K=F6nig?= <christian.koenig@amd.com>
Subject: Re: [PATCH 1/3] drm/radeon: stop poisoning the GART TLB
Date: Thu, 3 Jul 2014 08:36:40 +0200
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To: =?ISO-8859-1?Q?Michel_D=E4nzer?= <michel@daenzer.net>, Alex Deucher <alexdeucher@gmail.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
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Am 03.07.2014 05:48, schrieb Michel D=E4nzer:
> On 03.07.2014 04:31, Christian K=F6nig wrote:
>>> FWIW, I've also had successful runs with the first three of the split
>>> changes, and with all of them.
>> Ok I've just pushed a branch testing-3.15-v3 to fdo which moves all page
>> table allocation to the end of VRAM. Please try with this memory layout,
>> it should give us a good idea if it's indeed a memory corruption or
>> something else.
> That branch just survived piglit as well.

Ok, so it's probably not an alignment issue but indeed a memory =

corruption (crap, the former would be easier to fix).

>> Apart from that please try to lockup your system with
>> radeon.lockup_timeout=3D0 on the kernel commandline and then try to get a
>> dump of the vm page tables with the script I've send to you in one of
>> the mails.
> Any preference for which changes of which branch I should try this with?
> E.g. with the two overalignment changes from testing-3.15-v2?

Just a blank 3.15 should be sufficient, I just want to take a look at =

the hexdump of the page tables to figure out what kind of memory =

corruption we have here.

Thanks,
Christian.