We could re-enable it also but I haven't tested that yet, and I'm
not sure we care much anyway.
V2: don't disable it from with the call itself. We need a custom
marshalling function or we get stuck waiting for thread to
finish.
V3: tidy up redundant code copied from generated version.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
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