[Bug 95472] [i915] Feature request: Add support for fencing for PRIME setups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95472

--- Comment #60 from Michel Dänzer <michel at daenzer.net> ---
(In reply to Mario Kleiner from comment #54)
> Given that intel-kms with pageflipping seems to wait just fine on the dmabuf
> fence for both old AMD radeon-kms + r600 and for different NVidia's under
> nouveau, but it goes wrong with Tonga on amdgpu + radeonsi, it looks as if
> something is missing in amdgpu-kms or radeonsi?

I doubt it, since (I just double-checked again) it works correctly with the
renderer using amdgpu and Xorg using radeon.

We had similar issues within amdgpu before 1ffd26524380 ("drm/amdgpu: fix
waiting for all fences before flipping"). Maybe i915 can learn something from
that? Then again, radeon still seems to only consider the exclusive fence.

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