Re: [PATCH] export notifier #1

Gerd Hoffmann
2008-01-23T14:35:54Z

Robin Holt wrote:
> We have a seg structure which is similar to some structure you probably
> have which describes the grant. One of the things hanging off that
> seg structure is essentially a page table containing PFNs with their
> respective flags (XPMEM specific and not the same as the pfn flags in
> the processor page tables).

i.e. page tables used by hardware != cpu, right?

In the Xen guest case the normal processor page tables are modified, but
in a special way to make the Xen hypervisor also release the grant.

cheers,
Gerd