diff options
| author | Vivek Kasireddy <vivek.kasireddy@intel.com> | 2024-11-25 19:13:42 -0800 |
|---|---|---|
| committer | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2024-11-26 12:52:18 +0300 |
| commit | 06a0f77195c6cb34c193b3eaeffc11060f043e7a (patch) | |
| tree | 87ae45c4d9200d0664ab6264e87c113240a81894 /drivers/gpu/drm/virtio/virtgpu_object.c | |
| parent | c1bae6802ee9c8ad8e3c1df7ca3174d6b4b260e5 (diff) | |
drm/virtio: Implement VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING cmd
This cmd is useful to let the VMM (i.e, Qemu) know that the backing
store associated with a resource is no longer valid, so that the VMM
can perform any cleanup or unmap operations.
The fence related changes and virtio_gpu_object_detach()/
virtio_gpu_detach_object_fenced() routines are extracted from a
patch by Dmitry Osipenko <dmitry.osipenko@collabora.com>.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Gurchetan Singh <gurchetansingh@chromium.org>
Cc: Chia-I Wu <olvaffe@gmail.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241126031643.3490496-2-vivek.kasireddy@intel.com
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_object.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_object.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index c7e74cf13022..d18263ddd972 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -97,6 +97,27 @@ static void virtio_gpu_free_object(struct drm_gem_object *obj) virtio_gpu_cleanup_object(bo); } +int virtio_gpu_detach_object_fenced(struct virtio_gpu_object *bo) +{ + struct virtio_gpu_device *vgdev = bo->base.base.dev->dev_private; + struct virtio_gpu_fence *fence; + + if (!bo->attached) + return 0; + + fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); + if (!fence) + return -ENOMEM; + + virtio_gpu_object_detach(vgdev, bo, fence); + virtio_gpu_notify(vgdev); + + dma_fence_wait(&fence->f, false); + dma_fence_put(&fence->f); + + return 0; +} + static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = { .free = virtio_gpu_free_object, .open = virtio_gpu_gem_object_open, |