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] https://markmail.org/thread/2ypjt5cfeu3m6lxu [2] https://markmail.org/thread/p5d3k566srtdtute [3] https://markmail.org/thread/j4xlqaaim266qpks

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.

thanks, Gerd