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Re: [Xen-devel] privileged domains and networking

To: Jody Belka <lists-xen@xxxxxxxx>
Subject: Re: [Xen-devel] privileged domains and networking
From: "M.A. Williamson" <maw48@xxxxxxxxx>
Date: 26 Nov 2004 17:29:26 +0000
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Just a couple of quick questions that were running around in my head lately. First, can either of the bsd ports operate as privleged domains yet?

Neither of the BSD ports to Xen (FreeBSD and NetBSD) have domain zero functionality (at this time). I don't think there are any plans to implement domain zero functionality for NetBSD, I don't know what the FreeBSD guys are intending to do.

And second, is it currently possible to do something like the following:

  hard disk(s)                 nic(s)
       |                          |
       |                          |
 /-----------\              /-----------\
 | dom0-priv |   blk dev    | dom1-priv |
 |           |--------------|           |
 |      xend |  event chnl  |           |
 \-----------/              \-----------/

and then have xend create unprivleged domains with block device event
channels hooked up to domain 0, and network device event channels
hooked up to domain 1?

That should work in principle. Xend configuration files should allow you to specify what domain to use as a backend for a device. I'm not sure anybody has actually ever tried it...


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