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When the execbuf call receives an in-fence it will get the dma_fence related to that fence fd and wait on it before submitting the draw call. On the out-fence side we get fence returned by the submitted draw call and attach it to a sync_file and send the sync_file fd to userspace. On error -1 is returned to userspace. VIRTGPU_EXECBUF_FENCE_FD_IN & VIRTGPU_EXECBUF_FENCE_FD_OUT are supported at the simultaneously and can be flagged for simultaneously. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com> Signed-off-by: Robert Foss <robert.foss@collabora.com> Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Link: http://patchwork.freedesktop.org/patch/msgid/20181112165157.32765-4-robert.foss@collabora.com Suggested-by: Rob Herring <robh@kernel.org> Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> |
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