diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 39 |
1 files changed, 2 insertions, 37 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index d90c166bb6e5..f62de06e3d07 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -121,44 +121,9 @@ void __init mapin_ram(void) } } -/* Scan the real Linux page tables and return a PTE pointer for - * a virtual address in a context. - * Returns true (1) if PTE was found, zero otherwise. The pointer to - * the PTE pointer is unmodified if PTE is not found. - */ -static int -get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep, pmd_t **pmdp) -{ - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd; - pte_t *pte; - int retval = 0; - - pgd = pgd_offset(mm, addr & PAGE_MASK); - if (pgd) { - pud = pud_offset(pgd, addr & PAGE_MASK); - if (pud && pud_present(*pud)) { - pmd = pmd_offset(pud, addr & PAGE_MASK); - if (pmd_present(*pmd)) { - pte = pte_offset_map(pmd, addr & PAGE_MASK); - if (pte) { - retval = 1; - *ptep = pte; - if (pmdp) - *pmdp = pmd; - /* XXX caller needs to do pte_unmap, yuck */ - } - } - } - } - return(retval); -} - static int __change_page_attr_noflush(struct page *page, pgprot_t prot) { pte_t *kpte; - pmd_t *kpmd; unsigned long address; BUG_ON(PageHighMem(page)); @@ -166,10 +131,10 @@ static int __change_page_attr_noflush(struct page *page, pgprot_t prot) if (v_block_mapped(address)) return 0; - if (!get_pteptr(&init_mm, address, &kpte, &kpmd)) + kpte = virt_to_kpte(address); + if (!kpte) return -EINVAL; __set_pte_at(&init_mm, address, kpte, mk_pte(page, prot), 0); - pte_unmap(kpte); return 0; } |