AMD graphics performance regression in 4.15 and later

[Gabriel C]

>2018-04-11 6:00 GMT+02:00 Gabriel C <nix.or.die at gmail.com>:
> 2018-04-09 11:42 GMT+02:00 Christian König <ckoenig.leichtzumerken at gmail.com>:
>> Am 07.04.2018 um 00:00 schrieb Jean-Marc Valin:
...
> I can help testing code for 4.17/++ if you wish but that is *different* storry.
>

Quick tested an 4.16.0-11490-gb284d4d5a678 , amdgpu and radeon driver
are broken now in this one.

radeon tells:

...

[    6.337838] [drm] PCIE GART of 2048M enabled (table at 0x00000000001D6000).
[    6.338210] radeon 0000:21:00.0: (-12) create WB bo failed
[    6.338214] radeon 0000:21:00.0: disabling GPU acceleration

...

And no way to start X .. flickering and hangs.

amdgpu hits an bug:

http://ftp.frugalware.org/pub/other/people/crazy/trace.txt


Do you have some git tree I can test from ?

Also if you need full , logs or any other infos just  let me know.

Regards