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powerpc/mm: Use the correct mask value when looking at pgtable address

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Our pgtable are 2*sizeof(pte_t)*PTRS_PER_PTE which is PTE_FRAG_SIZE.
Instead of depending on frag size, mask with PMD_MASKED_BITS.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Aneesh Kumar K.V 2013-05-11 22:33:19 +00:00 committed by Benjamin Herrenschmidt
parent 4a3b8d0b83
commit 613e60a661
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/include/asm/pgalloc-64.h
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@ -186,7 +186,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
static inline pgtable_t pmd_pgtable(pmd_t pmd)
{
return (pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE);
return (pgtable_t)(pmd_val(pmd) & ~PMD_MASKED_BITS);
}
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,