https://bugs.freedesktop.org/show_bug.cgi?id=108917
--- Comment #9 from Nicholas Kazlauskas nicholas.kazlauskas@amd.com --- (In reply to tempel.julian from comment #8)
Unfortunately, Linux 5.0.3 with
drm: Block fb changes for async plane updates commit 25dc194b34dd5919dd07b8873ee338182e15df9d
hasn't changed the situation, as far as I can tell. :(
That's the DRM level bugfix for use after free on async updates for plane framebuffer swaps. It actually hurts performance rather than helps it.
There's a fix that allows framebuffer swaps again being developed right now with some patches in dri-devel:
https://patchwork.freedesktop.org/series/57524/
You'd have to revert
"drm/amd/display: Skip fast cursor updates for fb changes"
as well though to actually allow this series to work.