diff --git a/sys/compat/linuxkpi/common/include/asm/pgtable.h b/sys/compat/linuxkpi/common/include/asm/pgtable.h
--- a/sys/compat/linuxkpi/common/include/asm/pgtable.h
+++ b/sys/compat/linuxkpi/common/include/asm/pgtable.h
@@ -42,4 +42,19 @@
 
 #define	pgprot_decrypted(prot)	(prot)
 
+#if defined(__i386__) || defined(__amd64__)
+#define	_PAGE_BIT_PRESENT	0
+#define	_PAGE_BIT_RW		1
+#define	_PAGE_BIT_USER		2
+#define	_PAGE_BIT_PWT		3
+#define	_PAGE_BIT_PCD		4
+#define	_PAGE_BIT_PAT		7
+
+#define	_PAGE_PRESENT	(((pteval_t) 1) << _PAGE_BIT_PRESENT)
+#define	_PAGE_RW	(((pteval_t) 1) << _PAGE_BIT_RW)
+#define	_PAGE_PWT	(((pteval_t) 1) << _PAGE_BIT_PWT)
+#define	_PAGE_PCD	(((pteval_t) 1) << _PAGE_BIT_PCD)
+#define	_PAGE_PAT	(((pteval_t) 1) << _PAGE_BIT_PAT)
+#endif
+
 #endif	/* _LINUXKPI_ASM_PGTABLE_H_ */