Re: [Xen-users] Hyper V with Xen

["Dominik Lange" <Trilab@xxxxxx>]

Hi Ian,

thanks for your good answer :-)

Nested virtualization sounds good. I'll be watching your sources and will 
contact you again. :-)

Thanks for that and best regards,

Dominik

-------- Original-Nachricht --------
> Datum: Mon, 16 Apr 2012 15:10:51 +0100
> Von: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
> An: Andrew Bobulsky <rulerof@xxxxxxxxx>
> CC: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>, Dominik Lange 
> <Trilab@xxxxxx>
> Betreff: Re: [Xen-users] Hyper V with Xen

> On Mon, 2012-04-16 at 14:53 +0100, Andrew Bobulsky wrote:
> > Hello Dominik,
> > 
> > Your question got me a little curious, because I know that Hyper-V is
> > a bit of a stickler for hardware requirements.  A bit of light
> > googling and link crawling turned up this:
> >
> http://www.virtuallyghetto.com/2011/07/how-to-enable-support-for-nested-64bit.html
> > 
> > I laughed a little bit when he referred to the nested VMs as
> > "Inception."  Great movie :D
> > 
> > It seems as though what you want to do will require hardware VT
> > translation on the part of the hypervisor (software virtualization of
> > hardware virtualization?  That makes my brain explode a little!).  It
> > *can* work, but maybe the devs can speak as to whether or not the
> > feature exists, or at least tell you what its "properly" called.  I'm
> > guessing that VMware calls it "VHV," probably short for "Virtualized
> > Hardware-assisted Virtualization."  Or something.  Hehe.
> 
> This is called "nested virtualisation" and will be an experimental
> feature in the upcoming 4.2 release. 
> 
> I've seen some reports of it running uniprocessor Hyper-V on AMD
> hardware, however there are some known issues with it and testing has
> not been extensive (hence experimental). See <4F5F323D.1020904@xxxxxxx>
> (on xen-devel) for the situation with Nested-SVM, I'm not aware of any
> similar list for nested VMX.
> 
> Please check the xen-devel archives for this year, in particular the
> "Nested SVM" thread referenced above and the entries on the weekly "4.2
> TODO" mails (and their sub-threads).
> 
> Ian.
> 
> > 
> > Cheers,
> > Andrew Bobulsky
> > 
> > On Mon, Apr 16, 2012 at 9:00 AM, Dominik Lange <Trilab@xxxxxx> wrote:
> > > Hi all,
> > >
> > > i have a question about Xen Hypervisor. Im a beginner in this area and
> sry if my question are stupid or something :-)
> > >
> > > For a project i will use Xen Hypervisor and Windows Server 2008 R2
> with Hyper2.
> > >
> > > My question is:
> > >
> > > Can i use Hyper-V in a Xen-based VM, so as a VM in a VM (Cause Hyper-V
> needs VT)?I looked in the documentation and use google but i find nothing.
> > >
> > > I would be very grateful for help! :-)
> > >
> > > Best regards,
> > >
> > > Dominik
> > > --
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> > 
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> 
> 
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