Index: kernel/generic/include/mm/as.h
===================================================================
--- kernel/generic/include/mm/as.h	(revision d0485c6a1e50e0398bb04d70d1e1ed89ea3db22a)
+++ kernel/generic/include/mm/as.h	(revision 4b43f86c9c581d38ec3c19b4620b11654c1ce635)
@@ -95,4 +95,9 @@
 	asid_t asid;
 	
+#ifdef CONFIG_VIRT_IDX_DCACHE
+	bool dcache_flush_on_install;
+	bool dcache_flush_on_deinstall;
+#endif /* CONFIG_VIRT_IDX_DCACHE */
+
 	/** Architecture specific content. */
 	as_arch_t arch;
@@ -161,4 +166,10 @@
 	/** Data to be used by the backend. */
 	mem_backend_data_t backend_data;
+
+	/** 
+	 * Virtual color of the original address space area that was at the beginning
+	 * of the share chain.
+	 */
+	int orig_color; 
 };