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Re: [Xen-devel] Xen nested wiki

Dario Faggioli wrote on 2014-02-14:
> 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

Hi, George,

Can you elaborate the two issues? I am not in the background.

>> 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.

I agree too. A hint to say it is there should be ok to me.

>> 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

Best regards,

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