diff options
Diffstat (limited to 'arch/x86/mm/pageattr_32.c')
| -rw-r--r-- | arch/x86/mm/pageattr_32.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/mm/pageattr_32.c b/arch/x86/mm/pageattr_32.c index be46564..523fd5b 100644 --- a/arch/x86/mm/pageattr_32.c +++ b/arch/x86/mm/pageattr_32.c @@ -18,7 +18,7 @@ static DEFINE_SPINLOCK(cpa_lock); static struct list_head df_list = LIST_HEAD_INIT(df_list); -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; @@ -32,8 +32,10 @@ pte_t *lookup_address(unsigned long address) pmd = pmd_offset(pud, address); if (pmd_none(*pmd)) return NULL; + *level = 2; if (pmd_large(*pmd)) return (pte_t *)pmd; + *level = 3; return pte_offset_kernel(pmd, address); } @@ -156,11 +158,12 @@ static int __change_page_attr(struct page *page, pgprot_t prot) struct page *kpte_page; unsigned long address; pte_t *kpte; + int level; BUG_ON(PageHighMem(page)); address = (unsigned long)page_address(page); - kpte = lookup_address(address); + kpte = lookup_address(address, &level); if (!kpte) return -EINVAL; |
