On 11/21/21 18:22, Dongwon Kim wrote:
> The dmabuf often becomes invalid right after unblocking pipeline
> and graphic_hw_gl_flushed in case a new scanout blob is submitted
> because the dmabuf associated with the current guest scanout is
> freed after swapping.
>
> So both graphic_hw_gl_block and graphic_hw_gl_flushed should be
> executed after closing fence_fd for the current dmabuf.
>
> Cc: Gerd Hoffmann <kra...@redhat.com>
> Cc: Vivek Kasireddy <vivek.kasire...@intel.com>
If so:
Fixes: 65b847d284c ("ui: Create sync objects and fences only for blobs")
> Signed-off-by: Dongwon Kim <dongwon....@intel.com>
> ---
> ui/gtk.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/ui/gtk.c b/ui/gtk.c
> index 7abe1a69d8..2a3a9db13f 100644
> --- a/ui/gtk.c
> +++ b/ui/gtk.c
> @@ -589,11 +589,11 @@ void gd_hw_gl_flushed(void *vcon)
> VirtualConsole *vc = vcon;
> QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
>
> - graphic_hw_gl_block(vc->gfx.dcl.con, false);
> - graphic_hw_gl_flushed(vc->gfx.dcl.con);
> qemu_set_fd_handler(dmabuf->fence_fd, NULL, NULL, NULL);
> close(dmabuf->fence_fd);
> dmabuf->fence_fd = -1;
> + graphic_hw_gl_block(vc->gfx.dcl.con, false);
> + graphic_hw_gl_flushed(vc->gfx.dcl.con);
> }
>
> /** DisplayState Callbacks (opengl version) **/
>
