Re: [Xen-devel] Xen nested wiki

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On ven, 2014-02-14 at 10:24 +0000, George Dunlap wrote:
> On 02/14/2014 01:13 AM, Zhang, Yang Z wrote:

> > Sorry. I didn't clarify it clearly. Most of the patches to run nested are 
> > already in Xen upstream. What I want is to add "nested is basically 
> > supported in Xen 4.4" in the Xen 4.4 release note to let people know it.
> 
> I'm afraid "basically supported" will imply to people that they might 
> consider shipping it on production systems.  But because of the issues 
> with shadow-on-HAP, and the potential locking issues with the nested p2m 
> table, both of which are in control of the guest admin rather than the 
> host admin, I don't think that's a recommendation we can make at this time.
> 
> But I do think making some kind of announcement about common 
> functionality being complete and ready to be tested would be a good 
> idea.  When we come to make the release we can brainstorm on what 
> wording to use.
> 
I agree. Let's not sell something not entirely ready, as that could
backfire, but we should at least hint that it's there and it's improved.

> Actually, I wonder whether advertising Win7's XP compatibility mode as a 
> separate "tech preview" feature would make sense.  The people who use 
> that feature are very likely very different than most other people who 
> might think about using nested virtualization.
> 
Completely agree again. And this is something that could be very well
described in a blog post on the subject (happening after the release), I
think. :-)

Regads,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
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Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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