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xen: add xen_set_domain_pte()

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Add xen_set_domain_pte() to allow setting a pte mapping a page from
another domain.  The common case is to map from DOMID_IO, the pseudo
domain which owns all IO pages, but will also be used in the privcmd
interface to map other domain pages.

[ Impact: new Xen-internal API for cross-domain mappings ]

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2009-02-09 12:05:49 -08:00
committed by Jeremy Fitzhardinge
parent 655d406a7c
commit eba3ff8b99
2 changed files with 9 additions and 2 deletions
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arch/x86/include/asm/xen/page.h
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@@ -159,6 +159,7 @@ static inline pte_t __pte_ma(pteval_t x)
#define pgd_val_ma(x) ((x).pgd)
void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid);
xmaddr_t arbitrary_virt_to_machine(void *address);
unsigned long arbitrary_virt_to_mfn(void *vaddr);