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Date: Wed, 17 Oct 2007 01:49:26 +0200
From: Fabio Checconi <fabio@freebsd.org>
To: Ivan Voras <ivoras@freebsd.org>
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Cc: freebsd-arch@freebsd.org
Subject: Re: kernel level virtualisation requirements.
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> From: Ivan Voras <ivoras@freebsd.org>
> Date: Wed, Oct 17, 2007 12:54:21AM +0200
>
> Andrea Campi wrote:
> 
> > In para-virtualization you modify the kernel source in such a way that
[...]
> 
> Well Xen does paravirtulization like you described (and I agree
> something like that is more flexible then jails, if supported by other
> operating systems). DragonflyBSD has its own flavor of virtualization
> similar to user mode Linux, but it has greatly diverged from FreeBSD so
> it't probably not trivially portable.
> 
> Or do you mean something like this:
> http://feanor.sssup.it/~fabio/freebsd/lkvm/ ?
> 

The version of kvm ported to FreeBSD has no paravirtualization
support.  Paravirtualization is, as far as I know, still an
experimental feature on Linux, not present in the mainline tree.
I am not aware of FreeBSD support for the kvm hypercalls that are
being introduced in the kvm experimental trees.

By now kvm is really just a full virtualization solution.