Call for testing: OpenBSD vmm(4)/vmd(8) fd-ification

Thanks to the tireless work of among others Dave Voutila (dv@), development of the OpenBSD/amd64 virtualization system vmm(4)/vmd(8) continues to make progress. Now breaking changes, but with with potential benefits in both process isolation and compartmentalization of functionality, are on the way. It almost goes without saying that this code needs testing.