Hi,
for Xen, I need to allocate some kernel virtual address space, into which I'll
map physical pages loaned by foreign domains for I/O. The management of these
pages will be done in the backend drivers, and so will bypass pmap(9).
It there a way to reserve some kernel virtual address space from UVM, but
without physical memory backing it ? I didn't find an obvious way to do this
in the uvm(9) man page.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--