Index: kernel/arch/amd64/include/types.h
===================================================================
--- kernel/arch/amd64/include/types.h	(revision a63253421fd9024f28592eebed582cbddb29621e)
+++ kernel/arch/amd64/include/types.h	(revision f651e80e2ba6968d9e184dd8ca7fa6e5b779caaf)
@@ -58,4 +58,6 @@
 typedef int64_t native_t;
 
+typedef uintptr_t ioport_t;
+
 /**< Formats for uintptr_t, size_t, count_t and index_t */
 #define PRIp "llx"