x86: prepare for the unification of the cpa code

prepare for the unification of the cpa code, by unifying the
lookup_address() logic between 32-bit and 64-bit.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/mm/pageattr_64.c b/arch/x86/mm/pageattr_64.c
index 73dbbb4..7b734ee 100644 (file)
--- a/arch/x86/mm/pageattr_64.c
+++ b/arch/x86/mm/pageattr_64.c
@@ -19,26 +19,21 @@ pte_t *lookup_address(unsigned long address, int *level)
        pgd_t *pgd = pgd_offset_k(address);
        pud_t *pud;
        pmd_t *pmd;
-       pte_t *pte;
 
        if (pgd_none(*pgd))
                return NULL;
        pud = pud_offset(pgd, address);
-       if (!pud_present(*pud))
+       if (pud_none(*pud))
                return NULL;
        pmd = pmd_offset(pud, address);
-       if (!pmd_present(*pmd))
+       if (pmd_none(*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))
-               pte = NULL;
-
-       return pte;
+       return pte_offset_kernel(pmd, address);
 }
 
 static struct page *