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Re: [Xen-devel] Is it possible that Xen starts without Domain0


  • To: Hu Jia Yi <jyhu@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • Date: Fri, 07 Sep 2007 08:33:28 +0100
  • Delivery-date: Fri, 07 Sep 2007 00:29:49 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acfw4kjSTRljW26xRSCqi4r74gViAgAIaD1AAAdeAE4=
  • Thread-topic: [Xen-devel] Is it possible that Xen starts without Domain0

On 7/9/07 05:08, "Hu Jia Yi" <jyhu@xxxxxxxxx> wrote:

> I have a question which may sound stupid.
> 
> Is the dom0 mainly responsible for administration of other VMs?
> If a PC only needs running HVM and doesn't need any administration, is
> it possible that Xen doesn't start dom0 but setup VM environment and
> start-up HVM image?

dom0 manages I/O devices (network, disk, video, ...) and also runs support
services (driver backends, device emulation) for PV and HVM guests. A Xen
system will definitely not work without dom0.

 -- Keir



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