[Intel-gfx] [PATCH 4/5] drm/cma-helper: Add DRM_GEM_CMA_VMAP_DRIVER_OPS

[Eric Anholt]

Noralf Trønnes <noralf at tronnes.org> writes:

> This adds functionality to the CMA helper which ensures that the kernel
> virtual address is set on the CMA GEM object also for imported buffers.
>
> The drivers have been audited to ensure that none set ->vaddr on imported
> buffers, making the conditional dma_buf_vunmap() call in
> drm_gem_cma_free_object() safe.
>
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>

I didn't look through 1-3 much since they had acks, but 4/5 get my:

Reviewed-by: Eric Anholt <eric at anholt.net>
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