Re: [Xen-devel] [PATCH v6 3/3] tools/libxc: use superpages during restore of HVM guest

[Olaf Hering <olaf@xxxxxxxxx>]

On Wed, Aug 30, Wei Liu wrote:

> > Can this actually happen with the available senders? If not, this is
> > again the missing memory map.
> Probably not now, but as said, you shouldn't rely on the structure of
> the stream unless it is stated in the spec.

Well, what can happen with todays implementation on the sender side is
the case of a ballooned guest with enough holes within a batch. These
will trigger 1G allocations before the releasing of memory happens. To
solve this, the releasing of memory has to happen more often, probably
after crossing each 2M boundary.


Olaf

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