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xen-devel
Re: [Xen-devel] Meaning of PG_foreign
On 6/10/06 10:54, "Jacob Gorm Hansen" <jacobg@xxxxxxx> wrote:
> can I count on all pages in a domU that are changed by Xen, backend
> drivers, or writable pagetable magic, being marked as PG_foreign?
I'm not sure what you mean by 'changed'. But I expect you misunderstand the
meaning of PG_foreign anyway. What it means is 'foreign' from the
point-of-view of Linux's buddy allocator -- i.e., it is a page that actually
comes from a different allocator, which is wanting to hook off of
free_pages(). It doesn't (necessarily) mean that the page is actually from a
foreign virtual machine.
-- Keir
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