Comment # 8 on bug 1225147 from llyyr

(In reply to Takashi Iwai from comment #7)
> It's a good news.  At least we're heading to the right direction.
> 
> I can backport the workaround patch to TW, but since the upstream got a
> significant rewrite of the relevant code, let's check whether it covers your
> problem at first.
> 
> I'm building another test kernel with two upstream backports:
> 2d5bb791e24f43b6b4231b7973009987bbcc9b06
>   drm/amd/display: Implement update_planes_and_stream_v3 sequence
> d62d5551dd615f9e488b13595d69b308cd019e16
>   drm/amd/display: Backup and restore only on full updates
> 
> It's being built in OBS home:tiwai:bsc1225147 repo.  The package will appear
> at
>   http://download.opensuse.org/repositories/home:/tiwai:/bsc1225147/standard/
> Please give it a try later.
> 
That does not resolve the issue, I can still reproduce the hard lockup.

> Meanwhile, you can join to the upstream gitlab.freedesktop.org issues
> mentioned in comment 2, echoing that the revert helped, too.
I did https://gitlab.freedesktop.org/drm/amd/-/issues/3142#note_2427275