Index: abi/include/ipc/methods.h
===================================================================
--- abi/include/ipc/methods.h	(revision f044e96c50752824a763e9b11ea00b026e7c0772)
+++ abi/include/ipc/methods.h	(revision d9cf684a06c89943fd883b794b0b10a3a95d4bd9)
@@ -127,5 +127,8 @@
  *
  * on answer, the recipient must set:
- * - ARG1 - dst as_area base adress
+ *
+ * - ARG1 - dst as_area lower bound
+ * - ARG2 - dst as_area base adress pointer
+ *          (filled automatically by the kernel)
  *
  */
@@ -133,7 +136,6 @@
 
 /** Receive as_area over IPC.
- * - ARG1 - destination as_area base address
- * - ARG2 - destination as_area size
- * - ARG3 - user defined argument
+ * - ARG1 - destination as_area size
+ * - ARG2 - user defined argument
  *
  * on answer, the recipient must set:
@@ -141,4 +143,6 @@
  * - ARG1 - source as_area base address
  * - ARG2 - flags that will be used for sharing
+ * - ARG3 - dst as_area lower bound
+ * - ARG4 - dst as_area base address (filled automatically by kernel)
  *
  */
Index: abi/include/syscall.h
===================================================================
--- abi/include/syscall.h	(revision f044e96c50752824a763e9b11ea00b026e7c0772)
+++ abi/include/syscall.h	(revision d9cf684a06c89943fd883b794b0b10a3a95d4bd9)
@@ -60,5 +60,4 @@
 	SYS_AS_AREA_CHANGE_FLAGS,
 	SYS_AS_AREA_DESTROY,
-	SYS_AS_GET_UNMAPPED_AREA,
 	
 	SYS_PAGE_FIND_MAPPING,
@@ -85,7 +84,9 @@
 	SYS_DEVICE_ASSIGN_DEVNO,
 	SYS_PHYSMEM_MAP,
+	SYS_PHYSMEM_UNMAP,
 	SYS_DMAMEM_MAP,
 	SYS_DMAMEM_UNMAP,
 	SYS_IOSPACE_ENABLE,
+	SYS_IOSPACE_DISABLE,
 	SYS_IRQ_REGISTER,
 	SYS_IRQ_UNREGISTER,