Index: kernel/arch/amd64/include/mm/page.h
===================================================================
--- kernel/arch/amd64/include/mm/page.h	(revision 8607db8973636c4d5002631c147efc77bc9fd967)
+++ kernel/arch/amd64/include/mm/page.h	(revision 4b43f86c9c581d38ec3c19b4620b11654c1ce635)
@@ -52,4 +52,6 @@
 #define PAGE_WIDTH	FRAME_WIDTH
 #define PAGE_SIZE	FRAME_SIZE
+
+#define PAGE_COLOR_BITS	0			/* dummy */
 
 #ifdef KERNEL