[Intel-gfx] [PATCH 06/19] drm/vmwgfx: Drop the cursor locking hack

[Daniel Vetter]

We discussed this quickly on irc, transcribing.

On Mon, Mar 27, 2017 at 5:01 AM, Michel Dänzer <michel at daenzer.net> wrote:
> Strictly speaking, the (virtual) hardware is too limited to support the
> legacy KMS cursor API. AFAIR e.g. weston at least used to make use of HW
> cursors for other surfaces, not sure that's currently the case though.

That was disabled again because of lack of atomic (together with all
overlay support if your driver isn't atomic). But atomic/universal
planes allows us to at least model vmwgfx correctly. For each crtc
we'd have one primary plane, but only one global cursor plane that we
attach to the cursor slot of each crtc. Then universal/atomic aware
userspace could realize that there's only 1 cursor plane and make sure
it's not over-used.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch