[Xen-devel] transferring ownership of domheap pages

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

I'd like to have routines to transfer ownership
of a page both from domain D1 to anonymous and
from anonymous to domain D2, without the necessity
of doing a free_domheap_pages followed by an
alloc_domheap_pages (primarily because I don't
want to scrub the page as I know it will be
immediately overwritten by the new owner).
The anon-to-D2 would fail (return NULL) if
D2 is fully allocated.

Any problems to watch out for?

Thanks,
Dan

P.S. Only has to work on 64-bit Xen if that matters.

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