ARC: mm: support 4 levels of page tables

[linux-2.6-microblaze.git] / arch / arc / include / asm / pgalloc.h

diff --git a/arch/arc/include/asm/pgalloc.h b/arch/arc/include/asm/pgalloc.h
index 781620d..096b8ef 100644 (file)
--- a/arch/arc/include/asm/pgalloc.h
+++ b/arch/arc/include/asm/pgalloc.h
@@ -70,6 +70,17 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
        return ret;
 }
 
+#if CONFIG_PGTABLE_LEVELS > 3
+
+static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4dp, pud_t *pudp)
+{
+       set_p4d(p4dp, __p4d((unsigned long)pudp));
+}
+
+#define __pud_free_tlb(tlb, pmd, addr)  pud_free((tlb)->mm, pmd)
+
+#endif
+
 #if CONFIG_PGTABLE_LEVELS > 2
 
 static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmdp)