> I don't think it's beautiful, no, but any abstraction layer is going to
> have an impact, and you should probably compare it with the
> alternatives.
Alternative is separate binary for Xen kernel and VMI/native (which doesn't need
any ops, just easily predictable and human readable jumps and can be also
run natively without too much impact). In fact I bet the Xen kernel could
run natively too without too much impact by just using a simple stub hypervisor,
but for that the VMI approach seems better.
Frankly I don't see us supporting a zillion different more hypervisor
interfaces neither and the both approaches ("high level" like in Xen
and "low level" like in VMI) should cover most of the use space already
anyways.
-Andi
