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-rw-r--r--arch/powerpc/include/asm/page.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index ff24254990e1..e96d52a516ba 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -229,6 +229,20 @@ typedef unsigned long pgprot_t;
#endif
+typedef struct { signed long pd; } hugepd_t;
+#define HUGEPD_SHIFT_MASK 0x3f
+
+#ifdef CONFIG_HUGETLB_PAGE
+static inline int hugepd_ok(hugepd_t hpd)
+{
+ return (hpd.pd > 0);
+}
+
+#define is_hugepd(pdep) (hugepd_ok(*((hugepd_t *)(pdep))))
+#else /* CONFIG_HUGETLB_PAGE */
+#define is_hugepd(pdep) 0
+#endif /* CONFIG_HUGETLB_PAGE */
+
struct page;
extern void clear_user_page(void *page, unsigned long vaddr, struct page *pg);
extern void copy_user_page(void *to, void *from, unsigned long vaddr,
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