Comment # 64
on bug 106175
from Nicholas Kazlauskas
Created attachment 142574 [details] [review] 0001-drm-amd-display-Add-fast-path-for-legacy-cursor-plan.patch This patch is similar to the async_update one but it takes care to lock if anything is modifying the plane. It's very close to what i915 does with a few minor differences with framebuffer handling. I've tested it for compton with Gallium HUD up and I no longer see the issue on mouse movement (cursor fb changes are still a bit slow, so you'll still probably see spikes on cursor changes). You can try this on top of amd-staging-drm-next and I'd imagine it'd fix your problems.
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