Re: [PATCH] xen: core dom0 support
From: Anthony Liguori
Date: Wed Mar 04 2009 - 14:34:19 EST
H. Peter Anvin wrote:
In particular, Xen is a microkernel-type operating system. The dom0
model is a classic single-server, in the style of Mach. A lot of the
"Xen could use a distributed dom0" arguments were also done with Mach
("the real goal is a multi-server") but such a system never
materialized (Hurd was supposed to be one.) Building multiservers is
*hard*, and building multiservers which don't suck is even harder.
A lot of the core Xen concepts (domains, event channels, etc.) were
present in the Nemesis[1] exo-kernel project.
Two other interest papers on the subject "Are virtual machine monitors
microkernels done right?"[2] from the Xen folks and a rebuttal from the
l4ka group[3].
[1] http://www.cl.cam.ac.uk/research/srg/netos/old-projects/nemesis/
[2] http://portal.acm.org/citation.cfm?id=1251124
[3] http://l4ka.org/publications/paper.php?docid=2189
Regards,
Anthony Liguori
-hpa
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