diff --git a/arch/x86/kernel/include/arch/mman.h b/arch/x86/kernel/include/arch/mman.h
new file mode 100644
index 00000000..a8e25161
--- /dev/null
+++ b/arch/x86/kernel/include/arch/mman.h
@@ -0,0 +1,30 @@
+/**
+ * \file mman.h
+ *  License details are found in the file LICENSE.
+ * \brief
+ *  memory management declarations
+ * \author Gou Nakamura  <go.nakamura.yw@hitachi-solutions.com> \par
+ * 	Copyright (C) 2015  RIKEN AICS
+ */
+/*
+ * HISTORY:
+ */
+
+#ifndef HEADER_ARCH_MMAN_H
+#define HEADER_ARCH_MMAN_H
+
+/*
+ * mapping flags
+ */
+#define	MAP_32BIT	0x40
+#define	MAP_GROWSDOWN	0x0100
+#define	MAP_DENYWRITE	0x0800
+#define	MAP_EXECUTABLE	0x1000
+#define	MAP_LOCKED	0x2000
+#define	MAP_NORESERVE	0x4000
+#define	MAP_POPULATE	0x8000
+#define	MAP_NONBLOCK	0x00010000
+#define	MAP_STACK	0x00020000
+#define	MAP_HUGETLB	0x00040000
+
+#endif /* HEADER_ARCH_MMAN_H */
diff --git a/kernel/include/mman.h b/kernel/include/mman.h
index f63bb24b..e7d3526b 100644
--- a/kernel/include/mman.h
+++ b/kernel/include/mman.h
@@ -5,6 +5,8 @@
  *  memory management declarations
  * \author Gou Nakamura  <go.nakamura.yw@hitachi-solutions.com> \par
  * 	Copyright (C) 2013  Hitachi, Ltd.
+ * \author Gou Nakamura  <go.nakamura.yw@hitachi-solutions.com> \par
+ * 	Copyright (C) 2015  RIKEN AICS
  */
 /*
  * HISTORY:
@@ -13,6 +15,8 @@
 #ifndef HEADER_MMAN_H
 #define HEADER_MMAN_H
 
+#include <arch/mman.h>
+
 /*
  * memory protection
  */
@@ -32,16 +36,6 @@
 #define	MAP_PRIVATE	0x02
 #define	MAP_FIXED	0x10
 #define	MAP_ANONYMOUS	0x20
-#define	MAP_32BIT	0x40
-#define	MAP_GROWSDOWN	0x0100
-#define	MAP_DENYWRITE	0x0800
-#define	MAP_EXECUTABLE	0x1000
-#define	MAP_LOCKED	0x2000
-#define	MAP_NORESERVE	0x4000
-#define	MAP_POPULATE	0x8000
-#define	MAP_NONBLOCK	0x00010000
-#define	MAP_STACK	0x00020000
-#define	MAP_HUGETLB	0x00040000
 
 /*
  * memory advice