I have been tracking the 1.3 I/O update quite closely, and
have a reasonable idea of how the low level mechanisms work.
Is there a roadmap document that describes where Xen I/O is going at a high level?
IE – Will the Hardware I/O drivers be removed from Xen, and moved into a special I/O manager domain (or Domain
0)
Will there
be a stub (just drivers, and not much else) linux
kernel running in a privileged domain just for servicing hardware to other
domains that don’t map the hardware?
Will
Domain 0 continue to do its own hardware I/O?
Will it be
possible to have complicated mappings of privileged domains that each control
different bits of hardware, and have them service I/O to arbitrary sets of
non-privileged domains?
Barry Silverman
