[PATCH v6 0/3] Support virtio cross-device resources

From: David Stevens
Date: Mon Aug 17 2020 - 21:37:58 EST


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

v5 -> v6 changes:
- Fix >80 character comment

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

drivers/gpu/drm/virtio/virtgpu_drv.c | 3 +
drivers/gpu/drm/virtio/virtgpu_drv.h | 20 ++++++
drivers/gpu/drm/virtio/virtgpu_kms.c | 4 ++
drivers/gpu/drm/virtio/virtgpu_prime.c | 96 +++++++++++++++++++++++++-
drivers/gpu/drm/virtio/virtgpu_vq.c | 55 +++++++++++++++
drivers/virtio/Makefile | 2 +-
drivers/virtio/virtio.c | 6 ++
drivers/virtio/virtio_dma_buf.c | 82 ++++++++++++++++++++++
include/linux/virtio.h | 1 +
include/linux/virtio_dma_buf.h | 37 ++++++++++
include/uapi/linux/virtio_gpu.h | 19 +++++
11 files changed, 321 insertions(+), 4 deletions(-)
create mode 100644 drivers/virtio/virtio_dma_buf.c
create mode 100644 include/linux/virtio_dma_buf.h

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2.28.0.220.ged08abb693-goog