diff options
Diffstat (limited to 'arch/x86/mm/pageattr_64.c')
| -rw-r--r-- | arch/x86/mm/pageattr_64.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/mm/pageattr_64.c b/arch/x86/mm/pageattr_64.c index 14ab327cde0..59cd066f674 100644 --- a/arch/x86/mm/pageattr_64.c +++ b/arch/x86/mm/pageattr_64.c @@ -14,7 +14,7 @@ #include <asm/uaccess.h> #include <asm/io.h> -pte_t *lookup_address(unsigned long address) +pte_t *lookup_address(unsigned long address, int *level) { pgd_t *pgd = pgd_offset_k(address); pud_t *pud; @@ -29,8 +29,10 @@ pte_t *lookup_address(unsigned long address) pmd = pmd_offset(pud, address); if (!pmd_present(*pmd)) return NULL; + *level = 3; if (pmd_large(*pmd)) return (pte_t *)pmd; + *level = 4; pte = pte_offset_kernel(pmd, address); if (pte && !pte_present(*pte)) @@ -140,8 +142,9 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot, struct page *kpte_page; pgprot_t ref_prot2; pte_t *kpte; + int level; - kpte = lookup_address(address); + kpte = lookup_address(address, &level); if (!kpte) return 0; |