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

["Michel Dänzer" <michel@daenzer.net>]

On 24.06.2014 19:14, Christian König wrote:
> Am 24.06.2014 08:49, schrieb Michel Dänzer:
>> On 23.06.2014 18:56, Christian König wrote:
>>> Am 23.06.2014 10:15, schrieb Michel Dänzer:
>>>> On 19.06.2014 18:45, Christian König wrote:
>>>>
>>>>> I think even when we revert to the old code we have a couple of
>>>>> unsolved
>>>>> problems with the VM support or in the driver in general where we
>>>>> should
>>>>> try to understand the underlying reason for it instead of applying
>>>>> more
>>>>> workarounds.
>>>> I'm not suggesting applying more workarounds but going back to a known
>>>> more stable state. It seems like we've maneuvered ourselves to a rather
>>>> uncomfortable position from there, with no clear way to a better place.
>>>> But if we basically started from the 3.14 state again, we have a few
>>>> known hurdles like mine and Marek's Bonaire etc. which we know any
>>>> further improvements will have to pass before they can be considered
>>>> for
>>>> general consumption.
>>> Yeah agree, especially on the uncomfortable position.
>>>
>>> Please try with the two attached patches applied on top of 3.15 and
>>> retest. They should revert back to the old implementation.
>> Unfortunately, X fails to start with these, see the attached excerpt
>> from dmesg.
> 
> My fault, incorrectly solved a merge conflict and then failed to test
> the right kernel.
> 
> BTW: Wasn't there an option to tell grup to use the latest installed
> kernel instead of the one with the highest version number? Can't seem to
> find that any more.

No idea, unfortunately.


> Please try attached patches instead,

With these patches, 3.15 just survived two piglit runs on my Bonaire,
one with the GART poisoning fix and one without. It never survived a
single run before.

Acked-and-Tested-by: Michel Dänzer <michel.daenzer@amd.com>


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer