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 961c0484519f4f59bbfc17feda26b91c8046c90a)
@@ -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);