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Date:      Tue, 29 May 2012 00:03:05 +0200
From:      Witold Baryluk <baryluk@smp.if.uj.edu.pl>
To:        Lukas Laukamp <lukas@laukamp.me>
Cc:        freebsd-xen@freebsd.org
Subject:   Re: FreeBSD Xen Dom0 Support
Message-ID:  <20120528220305.GC16584@smp.if.uj.edu.pl>
In-Reply-To: <4FC3C83B.503@laukamp.me>
References:  <4FC3B195.8020007@laukamp.me> <B6F285C4-47B8-429C-896F-DBC32E39F91A@sysconfig.org.uk> <4FC3C83B.503@laukamp.me>

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On 05-28 20:47, Lukas Laukamp wrote:
> Am 28.05.2012 20:02, schrieb Carsten Heesch:
> >Hi Lukas,
> >
> >>[...] I don't know whether there is support for Xen Dom0 on FreeBSD.
> >Unfortunately there isn't.
> >
> >>I read that NetBSD support Xen Dom0 [...]
> >I haven't tried myself, but apparently NetBSD works rather well as Dom0. That has long been on my list of things to test, though :)
> >
> >Not sure if you are aware of it, but in order to run FreeBSD as DomU, you don't need FreeBSD or NetBSD as Dom0. That works just as well on your Debian Dom0. (With FreeBSD's known limitations as DomU, namely memory and architecture depending on PV or HVM virtualisation)
> >
> >
> >Cheers
> >C.
> >
> >
> 
> Hello Carsten,
> 
> thanks for your fast answer. That FreeBSD as DomU runs on Linux I
> know. So I only think that it is a bit tricky to build a PV DomU of
> FreeBSD because the kernel must be modified. I wan't to have another
> system like Linux as the host because I think that the BSDs are
> better in the stability and a few other points. I read in the
> english Wikipedia article about Xen that there is support for
> NetBSD, OpenBSD and OpenSolaris
> (http://en.wikipedia.org/wiki/Xen#Host:_Unix-like_systems).
> 


BTW. I read yeasterday that Windows Server 2008 with Hyper-V is able to
run XEN PV domU Linux on it. It probably is also able to run other Xen
domU guests, but probably nobody was trying to do so. I do not know
details, but it was what I read about Hyper-V hypervisor on Wikipedia.
In fact it looks like independent implementation of Xen compatible
hypervisor (it uses same hypercall api, but I do not know with which
version of Xen it is compatible) with Windows as dom0.

Not that anybody would want to run it, but just saying.

-- 
Witold Baryluk



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