From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sassy Natan Subject: Re: [Xen-devel] DomU as Dom0? Date: Fri, 12 Feb 2010 08:23:41 +0200 Message-ID: <529a12f41002112223j4bd55064y427cdb9dc84315f6@mail.gmail.com> References: <529a12f41002111143t6f41924ey46e4ef940d7c9969@mail.gmail.com> <1265924495.9385.84.camel@agari.van.xensource.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0164531406==" Return-path: In-Reply-To: <1265924495.9385.84.camel@agari.van.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-users-bounces@lists.xensource.com Errors-To: xen-users-bounces@lists.xensource.com To: Daniel Stodden Cc: "xen-devel@lists.xensource.com" , Xen List List-Id: xen-devel@lists.xenproject.org --===============0164531406== Content-Type: multipart/alternative; boundary=001485edc5c10bf34b047f614f1b --001485edc5c10bf34b047f614f1b Content-Type: text/plain; charset=ISO-8859-1 OK, Thanks for the answers Sassy On Thu, Feb 11, 2010 at 11:41 PM, Daniel Stodden wrote: > On Thu, 2010-02-11 at 14:43 -0500, Sassy Natan wrote: > > Hi, > > > > > > > > > > Can I run on DomU a Dom0 Kernel? So that This DomU will act as a Dom0 > > for other DomU on top of it? > > Domains don't stack. There's no concept of one domain running on top of > a different one, not even with the original dom0. > > But many of the tasks dom0 performs on behalf of domU's could be done by > other domUs as well. Primary example would be I/O virtualization for > normal, non-privileged guests. > > So the dependency graph you can build for a 'service' model is *much* > more flexible than the rather static 3-level block scheme depicting the > bare binary interface. > > That's maybe not the answer you were looking for. > > If you're rather looking for recursive virtualization, I don't think > that's going to fly all that well either. > > Daniel > > --001485edc5c10bf34b047f614f1b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
OK,

Thanks for the answers
Sassy

On Thu, Feb 11,= 2010 at 11:41 PM, Daniel Stodden <daniel.stodden@citrix.com> wrote:
On Thu, 2010-02-11 at 14:= 43 -0500, Sassy Natan wrote:
> Hi,
>
>
>
>
> Can I run on DomU a Dom0 Kernel? So that This DomU will act as a Dom0<= br> > for other DomU on top of it?

Domains don't stack. There's no concept of one domain running= on top of
a different one, not even with the original dom0.

But many of the tasks dom0 performs on behalf of domU's could be done b= y
other domUs as well. Primary example would be I/O virtualization for
normal, non-privileged guests.

So the dependency graph you can build for a 'service' model is *muc= h*
more flexible than the rather static 3-level block scheme depicting the
bare binary interface.

That's maybe not the answer you were looking for.

If you're rather looking for recursive virtualization, I don't thin= k
that's going to fly all that well either.

Daniel


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