This patchset implements the current proposal for virtio cross-device resource sharing [1], with minor changes based on recent comments. It is expected that this will be used to import virtio resources into the virtio-video driver currently under discussion [2]. This patchset adds a new hook to dma-buf, for querying the dma-buf's underlying virtio UUID. This hook is then plumbed through DRM PRIME buffers, and finally implemented in virtgpu. [1] https://markmail.org/thread/jsaoqy7phrqdcpqu [2] https://markmail.org/thread/p5d3k566srtdtute v1 -> v2 changes: - Move get_uuid callback into main dma-buf ops (instead of placing it in a new flavor of dma-buf). - Rename new virtio commands and feature flag, and pull uapi changes into their own patch. David Stevens (4): dma-buf: add support for virtio exported objects drm/prime: add support for virtio exported objects virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature drm/virtio: Support virtgpu exported resources drivers/dma-buf/dma-buf.c | 14 ++++++ drivers/gpu/drm/drm_prime.c | 27 +++++++++++ drivers/gpu/drm/virtio/virtgpu_drv.c | 3 ++ drivers/gpu/drm/virtio/virtgpu_drv.h | 19 ++++++++ drivers/gpu/drm/virtio/virtgpu_kms.c | 4 ++ drivers/gpu/drm/virtio/virtgpu_prime.c | 48 ++++++++++++++++++-- drivers/gpu/drm/virtio/virtgpu_vq.c | 62 ++++++++++++++++++++++++++ include/drm/drm_drv.h | 15 +++++++ include/linux/dma-buf.h | 22 +++++++++ include/uapi/linux/virtio_gpu.h | 19 ++++++++ 10 files changed, 230 insertions(+), 3 deletions(-) -- 2.25.0.265.gbab2e86ba0-goog
