Re: [PATCH v3 5/5] drm/virtio: rework resource creation workflow.
From: Noralf TrÃnnes
Date: Wed Mar 27 2019 - 10:41:25 EST
Den 18.03.2019 12.33, skrev Gerd Hoffmann:
> This patch moves the virtio_gpu_cmd_create_resource() call (which
> notifies the host about the new resource created) into the
> virtio_gpu_object_create() function. That way we can call
> virtio_gpu_cmd_create_resource() before ttm_bo_init(), so the host
> already knows about the object when ttm initializes the object and calls
> our driver callbacks.
> Specifically the object is already created when the
> virtio_gpu_ttm_tt_bind() callback invokes virtio_gpu_object_attach(),
> so the extra virtio_gpu_object_attach() calls done after
> virtio_gpu_object_create() are not needed any more.
> The fence support for the create ioctl becomes a bit more tricky though.
> The code moved into virtio_gpu_object_create() too. We first submit the
> (fenced) virtio_gpu_cmd_create_resource() command, then initialize the
> ttm object, and finally attach just created object to the fence for the
> command in case it didn't finish yet.
> Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Acked-by: Noralf TrÃnnes <noralf@xxxxxxxxxxx>