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xen-devel
[Xen-devel] Re: pv_ops & gntdev?
Jeremy Fitzhardinge wrote:
> Gerd Hoffmann wrote:
>> Also: 2.6.18 gntdev does some funky interaction with the balloon driver.
>> What is the point in doing so?
>>
>
> Oh, the alloc_empty_pages_and_pagevec() stuff? It allocates some pages,
> just for their pfn slots, and then returns the underlying memory back to
> Xen. It uses the pfns to slot granted pages into.
Yep, gives pfn slot for the grant map. And a struct page too.
/me wonderes whenever that is required or whenever I could just map the
grants without asking the balloon driver for some slots ...
cheers,
Gerd
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