int is_write);
void cpu_physical_memory_unmap(void *buffer, hwaddr len,
int is_write, hwaddr access_len);
-void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
+void cpu_register_map_client(QEMUBH *bh);
+void cpu_unregister_map_client(QEMUBH *bh);
bool cpu_physical_memory_is_io(hwaddr phys_addr);