GEM objects can now have a function table instead of having the callbacks on the
DRM driver struct. This is now the preferred way and drivers can be moved over.
-Unfortunately some of the recently added GEM helpers are going in the wrong
-direction by adding OPS macros that use the old, deprecated hooks. See
-DRM_GEM_CMA_VMAP_DRIVER_OPS, DRM_GEM_SHMEM_DRIVER_OPS, and DRM_GEM_VRAM_DRIVER_PRIME.
+DRM_GEM_CMA_VMAP_DRIVER_OPS, DRM_GEM_SHMEM_DRIVER_OPS already support this, but
+DRM_GEM_VRAM_DRIVER_PRIME does not yet and needs to be aligned with the previous
+two. We also need a 2nd version of the CMA define that doesn't require the
+vmapping to be present (different hook for prime importing). Plus this needs to
+be rolled out to all drivers using their own implementations, too.
Use DRM_MODESET_LOCK_ALL_* helpers instead of boilerplate
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