The RESOURCE_CREATE_BLOB ioctl can carry a ccmd payload, similarly to
EXECBUF. But we need to preserve the order of buffered execbuf cmds
which haven't been flushed to the guest kernel yet, rather than let the
CREATE_BLOB payload jump to the head of the queue. Otherwise, for ex,
the host could see the guest requesting an iova that has not yet been
(from it's perspective) released.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20961>
bb438c8dc7