[PATCH] drm/vram-helpers: Set plane fence for display update

[Gerd Hoffmann]

  Hi,

> +	 * TODO: Synchronize with other users of the buffer. Buffers
> +	 *       cannot be pinned to VRAM while they are in use by other
> +	 *       drivers for DMA. We should probably wait for each GEM
> +	 *       object's fence before attempting to pin the buffer.

The other option is p2p (Documentation/driver-api/pci/p2pdma.rst).

cheers,
  Gerd