x86: add PG_LEVEL enum
this way PG_LEVEL_1GB will be an easy change.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index a270f9c..4589a13 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -28,6 +28,8 @@
pud_t *pud;
pmd_t *pmd;
+ *level = PG_LEVEL_NONE;
+
if (pgd_none(*pgd))
return NULL;
pud = pud_offset(pgd, address);
@@ -36,11 +38,12 @@
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd))
return NULL;
- *level = 3;
+
+ *level = PG_LEVEL_2M;
if (pmd_large(*pmd))
return (pte_t *)pmd;
- *level = 4;
+ *level = PG_LEVEL_4K;
return pte_offset_kernel(pmd, address);
}
@@ -145,7 +148,7 @@
address < (unsigned long)&_etext &&
(pgprot_val(prot) & _PAGE_NX));
- if (level == 4) {
+ if (level == PG_LEVEL_4K) {
set_pte_atomic(kpte, mk_pte(page, canon_pgprot(prot)));
} else {
err = split_large_page(kpte, address);