(In reply to madmalkav from comment #157)
> I've tried agd5f's 4.9 wip beanch with latest Mesa. Wflinfo fails with an
> "amdgpu: unkown family" error, no Gallium dump log, error on dmesg:

Which Mesa Git commit is that exactly? It looks like it's before SI support was
added to the amdgpu winsys code. Double-check that you're really building
current Git master, and that your self-built radeonsi_dri.so is getting picked
up.