powerpc/mm: Use the correct mask value when looking at pgtable address
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>
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@ -186,7 +186,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
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static inline pgtable_t pmd_pgtable(pmd_t pmd)
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{
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return (pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE);
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return (pgtable_t)(pmd_val(pmd) & ~PMD_MASKED_BITS);
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}
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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