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xen/gntdev: stop using "token" argument 

It's the struct page of the L1 pte page.  But we can get its mfn
by simply doing an arbitrary_virt_to_machine() on it anyway (which is
the safe conservative choice; since we no longer allow HIGHPTE pages,
we would never expect to be operating on a mapped pte page).

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Jeremy Fitzhardinge 2010-12-08 10:54:32 -08:00 committed by Konrad Rzeszutek Wilk
parent 9329e7604f
commit ba5d101229
1 changed files with 2 additions and 2 deletions
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4
drivers/xen/gntdev.c
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@ -209,8 +209,8 @@ static int find_grant_ptes(pte_t *pte, pgtable_t token,
u64 pte_maddr;
BUG_ON(pgnr >= map->count);
pte_maddr = (u64)pfn_to_mfn(page_to_pfn(token)) << PAGE_SHIFT;
pte_maddr += (unsigned long)pte & ~PAGE_MASK;
pte_maddr = arbitrary_virt_to_machine(pte).maddr;
gnttab_set_map_op(&map->map_ops[pgnr], pte_maddr,
GNTMAP_contains_pte | map->flags,
map->grants[pgnr].ref,