Tsubai Masanari <tsubai@iri.co.jp> writes:

> So, bus_space_alloc (-like function) needs to know which cbb is the
> caller, but bus_space_alloc can't.

This should be fixed in bus_space (you need to be able to tell
bus_space_alloc that it should allocate memory out of a specific
region). This probably means that a new bus_space_subregion-like
interface has to be added, where you can specify constraints, and that
gives you a tag that you can later pass back to _alloc.

/Johan