Re: [Xen-users] VMWare vs. Xen, is the conflict by VMware deliberate?

[Evan Lavelle <sa212+xen@xxxxxxxxxxx>]

Ndex Server wrote:

> What you're suggesting is running nested hypervisors, there's NO 
> performance advantage, no security advantage, no virutalization advantage.
He didn't say there was. Read his post again; what he actually said, and 
what you quoted, was:
> > It
> > works on VMware, but for various reasons I prefer to use Xen on my
> > Dom0. (I like open source, and the base OS for the commercial reasons
> > is much, much more recent, and I suspect the Xen Dom0 performance for
> > managing backup systems is superior.)
You said:

> What you are trying to do is completely illogical -- the VMware
> hypervisor and the Xen hypervisor cannot *both* own ring0.
What Nico said was:

> Hmm. Does a Xen DomU look to the unsespecting local environment like
> a ring 0 kernel, especially in full virtualization rather than
> para-virtualization? It would be contorted, but would allow me to
> keep my Dom0 as a Xen host, at a serious but potentially acceptable
> performance loss.
That seems like a good question to me. If you can't virtualise something 
that thinks it's running in ring 0, then it seems to me that you're not 
virtualising at all.
-Evan


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