Index: kernel/arch/amd64/include/mm/frame.h
===================================================================
--- kernel/arch/amd64/include/mm/frame.h	(revision ddcc8a0d63f8ff64bcff9151c6d65b103343d22c)
+++ kernel/arch/amd64/include/mm/frame.h	(revision bb7e6fc5884dcbae04f9a5a148380199a337427f)
@@ -43,5 +43,4 @@
 #include <typedefs.h>
 
-extern uintptr_t last_frame;
 extern void frame_low_arch_init(void);
 extern void frame_high_arch_init(void);