Re: [Xen-devel] Re: [PATCH] Support swap a page from user space tools -- Was RE: [RFC][PATCH] Basic support for page offline

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 19/03/2009 14:42, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote:

>>> It is ok for us to use an arbitrary new mfn, and then do the update_entry.
>>> But what happen if this process failed and we want to turn back to the old
>>> page? We still need this mechanism at that situation.
>> 
>> If what failed? The update_entry? How could that happen?
> 
> Per discussion before, when the page is granted to other domain, then after we
> update all entry, there will still have reference to left.

Hmmm I don't really understand.

 K.



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