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x86: use PTE_MASK rather than ad-hoc mask

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Use ~PTE_MASK to extract the non-pfn parts of the pte (ie, the pte
flags), rather than constructing an ad-hoc mask.

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 08:26:23 +01:00 committed by Linus Torvalds
parent 86aaf4fd4e
commit ba23cef5c2
1 changed files with 1 additions and 1 deletions
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include/asm-x86/pgtable.h
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@ -305,7 +305,7 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
return __pgprot(preservebits | addbits);
}
#define pte_pgprot(x) __pgprot(pte_val(x) & (0xfff | _PAGE_NX))
#define pte_pgprot(x) __pgprot(pte_val(x) & ~PTE_MASK)
#define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask)