Hi Rob, On Thu, 25 Oct 2018 at 19:38, Robert Foss <robert.foss@xxxxxxxxxxxxx> wrote: > > Add a new field called fence_fd that will be used by userspace to send > in-fences to the kernel and receive out-fences created by the kernel. > > This uapi enables virtio to take advantage of explicit synchronization of > dma-bufs. > > There are two new flags: > > * VIRTGPU_EXECBUF_FENCE_FD_IN to be used when passing an in-fence fd. > * VIRTGPU_EXECBUF_FENCE_FD_OUT to be used when requesting an out-fence fd > > The execbuffer IOCTL is now read-write to allow the userspace to read the > out-fence. > > On error -1 should be returned in the fence_fd field. > > Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx> > Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx> > --- > Changes since v2: > - Since exbuf-flags is a new flag, check that unsupported > flags aren't set. > > drivers/gpu/drm/virtio/virtgpu_ioctl.c | 5 +++++ > include/uapi/drm/virtgpu_drm.h | 13 ++++++++++--- > 2 files changed, 15 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c > index d01a9ed100d1..1af289b28fc4 100644 > --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c > +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c > @@ -116,9 +116,14 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data, > struct ww_acquire_ctx ticket; > void *buf; > > + exbuf->fence_fd = -1; > + Move this after the sanity checking. > if (vgdev->has_virgl_3d == false) > return -ENOSYS; > > + if ((exbuf->flags & ~VIRTGPU_EXECBUF_FLAGS)) > + return -EINVAL; > + I assume this did this trigger when using old userspace? With those the patch is Reviewed-by: Emil Velikov <emil.velikov@xxxxxxxxxxxxx> Thanks Emil _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
