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authorRyan Neph <ryanneph@chromium.org>2023-02-03 15:33:44 -0800
committerDmitry Osipenko <dmitry.osipenko@collabora.com>2023-02-06 20:10:56 +0300
commit8f20660f053cefd4693e69cfff9cf58f4f7c4929 (patch)
treefb41c2678fefd55e0322d26fac74f8b7bd7dabe6 /include
parent9f8b3706eb23bed26f7898af3c6f7fe3858564a1 (diff)
drm/virtio: exbuf->fence_fd unmodified on interrupted wait
An interrupted dma_fence_wait() becomes an -ERESTARTSYS returned to userspace ioctl(DRM_IOCTL_VIRTGPU_EXECBUFFER) calls, prompting to retry the ioctl(), but the passed exbuf->fence_fd has been reset to -1, making the retry attempt fail at sync_file_get_fence(). The uapi for DRM_IOCTL_VIRTGPU_EXECBUFFER is changed to retain the passed value for exbuf->fence_fd when returning anything besides a successful result from the ioctl. Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit synchronization") Signed-off-by: Ryan Neph <ryanneph@chromium.org> Reviewed-by: Rob Clark <robdclark@gmail.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/20230203233345.2477767-1-ryanneph@chromium.org
Diffstat (limited to 'include')
-rw-r--r--include/uapi/drm/virtgpu_drm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h
index 0512fde5e697..7b158fcb02b4 100644
--- a/include/uapi/drm/virtgpu_drm.h
+++ b/include/uapi/drm/virtgpu_drm.h
@@ -64,6 +64,7 @@ struct drm_virtgpu_map {
__u32 pad;
};
+/* fence_fd is modified on success if VIRTGPU_EXECBUF_FENCE_FD_OUT flag is set. */
struct drm_virtgpu_execbuffer {
__u32 flags;
__u32 size;