We have multiple Vulkan context types that are awaiting for the addition of the sync object DRM UAPI support to the VirtIO-GPU kernel driver: 1. Venus context 2. Native contexts (virtio-freedreno, virtio-intel, virtio-amdgpu) Mesa core supports DRM sync object UAPI, providing Vulkan drivers with a generic fencing implementation that we want to utilize. This patch adds initial sync objects support. It creates fundament for a further fencing improvements. Later on we will want to extend the VirtIO-GPU fencing API with passing fence IDs to host for waiting, it will be a new additional VirtIO-GPU IOCTL and more. Today we have several VirtIO-GPU context drivers in works that require VirtIO-GPU to support sync objects UAPI. The patch is heavily inspired by the sync object UAPI implementation of the MSM driver. Dmitry Osipenko (1): drm/virtio: Support sync objects drivers/gpu/drm/virtio/virtgpu_drv.c | 3 +- drivers/gpu/drm/virtio/virtgpu_ioctl.c | 223 ++++++++++++++++++++++++- include/uapi/drm/virtgpu_drm.h | 16 +- 3 files changed, 239 insertions(+), 3 deletions(-) -- 2.39.0
