https://bugzilla.kernel.org/show_bug.cgi?id=207383
--- Comment #110 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- That's inline with the expectations I think.
That patch shouldn't cause any performance or stuttering impacts and it should resolve the protection fault.
If there were issues with the patch I would expect to see them within the first few pageflips from booting into desktop.
For now I'll give my Reviewed-by on the patch on the mailing list and get it merged in.