ARM: mm: HugeTLB support for LPAE systems.

[deliverable/linux.git] / arch / arm / include / asm / pgtable-3level.h

diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 70f041cb50d113574ed6fc5a82a855232643cc9e..d1bcd8226cb102dbedd26f8f48a16153649d0e91 100644 (file)
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -61,6 +61,14 @@
 
 #define USER_PTRS_PER_PGD      (PAGE_OFFSET / PGDIR_SIZE)
 
+/*
+ * Hugetlb definitions.
+ */
+#define HPAGE_SHIFT            PMD_SHIFT
+#define HPAGE_SIZE             (_AC(1, UL) << HPAGE_SHIFT)
+#define HPAGE_MASK             (~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER     (HPAGE_SHIFT - PAGE_SHIFT)
+
 /*
  * "Linux" PTE definitions for LPAE.
  *
@@ -185,6 +193,9 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
 
 #define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,__pte(pte_val(pte)|(ext)))
 
+#define pte_huge(pte)          (pte_val(pte) && !(pte_val(pte) & PTE_TABLE_BIT))
+#define pte_mkhuge(pte)                (__pte(pte_val(pte) & ~PTE_TABLE_BIT))
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* _ASM_PGTABLE_3LEVEL_H */