[6.1][regression] after commit dd80d9c8eecac8c516da5b240d01a35660ba6cb6 some games (Cyberpunk 2077, Forza Horizon 4/5) hang at start

[Mikhail Gavrilov]

On Mon, Nov 14, 2022 at 6:22 PM Christian König
<christian.koenig at amd.com> wrote:
>
> I've found and fixed a few problems around the userptr handling which
> might explain what you see here.
>
> A series of four patches starting with "drm/amdgpu: always register an
> MMU notifier for userptr" is under review now.
>
> Going to give that a bit cleanup later today and will CC you when I send
> that out. Would be nice if you could give that some testing.
>
> Thanks,
> Christian.
>

Christian, I tested all four patches around week and can say that this
issue is completely gone.
All known broken games working.
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov at gmail.com>

The only thing I don't like is the flood in the kernel logs of the
message "WARNING message at drivers/gpu/drm/drm_modeset_lock.c:276
drm_modeset_drop_locks+0x63/0x70", but this is not related to the
patches being checked.
All kernel logs uploaded to pastebin [1][2][3][4][5][6][7][8]

I wrote a separate bug report about "drm_modeset_lock" [9], it's a
pity that no one paid attention to it. I even found the first bad
commit. It is b261509952bc19d1012cf732f853659be6ebc61e.

[1] https://pastebin.com/WZWczupk
[2] https://pastebin.com/f4i9pvjS
[3] https://pastebin.com/rsDWaMR1
[4] https://pastebin.com/tDNEYJq0
[5] https://pastebin.com/xfZVbm1f
[6] https://pastebin.com/Vx9gDyKt
[7] https://pastebin.com/XvRkLckV
[8] https://pastebin.com/pd8WBkgx
[9] https://www.spinics.net/lists/dri-devel/msg367543.html

Thanks.

-- 
Best Regards,
Mike Gavrilov.