Re: [PATCH v4 0/3] Support virtio cross-device resources

From: Gerd Hoffmann
Date: Thu May 28 2020 - 04:31:34 EST

On Tue, May 26, 2020 at 07:58:08PM +0900, David Stevens wrote:
> This patchset implements the current proposal for virtio cross-device
> resource sharing [1]. It will be used to import virtio resources into
> the virtio-video driver currently under discussion [2]. The patch
> under consideration to add support in the virtio-video driver is [3].
> It uses the APIs from v3 of this series, but the changes to update it
> are relatively minor.
> This patchset adds a new flavor of dma-bufs that supports querying the
> underlying virtio object UUID, as well as adding support for exporting
> resources from virtgpu.
> [1]
> [2]
> [3]
> v3 -> v4 changes:
> - Replace dma-buf hooks with virtio dma-buf from v1.
> - Remove virtio_attach callback, as the work that had been done
> in that callback is now done on dma-buf export. The documented
> requirement that get_uuid only be called on attached virtio
> dma-bufs is also removed.
> - Rebase and add call to virtio_gpu_notify for ASSIGN_UUID.
> David Stevens (3):
> virtio: add dma-buf support for exported objects
> virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature
> drm/virtio: Support virtgpu exported resources

Looks all sane to me. mst, have you looked at the virtio core changes?
How we are going to merge this? If you ack I can merge via
drm-misc-next. Merging through virtio queue would be fine too.