Re: [Xen-devel] Status of nestedhvm (on Intel)

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2012-04-16 at 16:27 +0100, Christian Tramnitz wrote:
> May I ask what the current nestedhvm status in Xen 4.1 is? The parameter 
> exists,
> the documentation just says that only previously existent cpu features will be
> passed through, but I can't seem to get a VM with "vmx" (for testing of ESX or
> Hyper-V in a Xen domU) working. "nestedhvm=1" seems just to be ignored...
> 
> Is this AMD-only in 4.1? Are additional CPU host features required to make 
> this
> work (like EPT, which I do have on this Xeon 5520 box or "Shared EPT" that I
> dont have but could be AMD related anyway)? Do I need unstable to make use of 
> it?

I can't see any support for nested HVM of any sort in 4.1. AFAIK it is
going to be an (experimental) feature in 4.2.

Ian.



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