Index: kernel/arch/amd64/include/mm/page.h
===================================================================
--- kernel/arch/amd64/include/mm/page.h	(revision 29b2bbf5311052c0b1ad8971cfac6843f0ef6a1b)
+++ kernel/arch/amd64/include/mm/page.h	(revision b63a7cc2e041ecffd46183cd61923f532c13d113)
@@ -191,4 +191,5 @@
 
 extern void page_arch_init(void);
+extern void page_fault(int n, istate_t *istate);
 
 #endif /* __ASM__ */