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xen: use PTE_MASK in pte_mfn() 

Use PTE_MASK to extract mfn from pte.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Tested-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeremy Fitzhardinge 2008-05-20 08:26:24 +01:00 committed by Linus Torvalds
parent ba23cef5c2
commit cbb3077cbe
1 changed files with 1 additions and 1 deletions
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2
include/asm-x86/xen/page.h
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@ -127,7 +127,7 @@ static inline void set_phys_to_machine(unsigned long pfn, unsigned long mfn)
static inline unsigned long pte_mfn(pte_t pte)
{
return (pte.pte & ~_PAGE_NX) >> PAGE_SHIFT;
return (pte.pte & PTE_MASK) >> PAGE_SHIFT;
}
static inline pte_t mfn_pte(unsigned long page_nr, pgprot_t pgprot)