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xen-users
RE: [Xen-users] RE: [Xen-devel] DomU as Dom0?
To: |
Javier Guerra <javier@xxxxxxxxxxx> |
Subject: |
RE: [Xen-users] RE: [Xen-devel] DomU as Dom0? |
From: |
"Dong, Eddie" <eddie.dong@xxxxxxxxx> |
Date: |
Wed, 17 Feb 2010 11:25:30 +0800 |
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Xen List <xen-users@xxxxxxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Dong, Eddie" <eddie.dong@xxxxxxxxx>, Thomas Goirand <thomas@xxxxxxxxxx>, Daniel Stodden <daniel.stodden@xxxxxxxxxx> |
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[Xen-users] RE: [Xen-devel] DomU as Dom0? |
Javier Guerra wrote:
> On Mon, Feb 15, 2010 at 11:32 AM, Dong, Eddie <eddie.dong@xxxxxxxxx>
> wrote:
>>>> It's called "nested virtualization" (not recursive) and there was a
>>
>> It is just a name difference. It is actually recursivable as if the
>> CPU is power enough.
>
> not if (as in this case) you use different requirements for each
> virtualization level. the 'real' level needs HVM support to set an
> HVM DomU, where you can run Xen, but this level doesn't have HVM, so
> you can only put PV DomU's there.
You can distinguish in this way. The term "nested" actually comes from KVM
side by Alexander Graf, though I don't know why he chooses nested rather than
recursive.
What the Xen summit talked and we were approaching is exactly recursive
virtualization.
>
> The KVM on KVM experiments are closer to being fully recursive.
Yes.
Eddie
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