Re: [PATCH 1/3] drm/radeon: stop poisoning the GART TLB

["Christian König" <christian.koenig@amd.com>]

Am 03.07.2014 05:48, schrieb Michel Dänzer:
> On 03.07.2014 04:31, Christian König 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=0 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.