Index: kernel/arch/amd64/include/mm/page.h
===================================================================
--- kernel/arch/amd64/include/mm/page.h	(revision c55dd5898c757f39330d775b262957e173319714)
+++ kernel/arch/amd64/include/mm/page.h	(revision 9d8b843538b9dbae5186021f20e29e0fdea80c5a)
@@ -52,4 +52,6 @@
 #define PAGE_WIDTH	FRAME_WIDTH
 #define PAGE_SIZE	FRAME_SIZE
+
+#define PAGE_COLOR_BITS	0			/* dummy */
 
 #ifdef KERNEL