Index: /trunk/Config.kmk
===================================================================
--- /trunk/Config.kmk	(revision 23897)
+++ /trunk/Config.kmk	(revision 23898)
@@ -509,6 +509,8 @@
  endif
 endif
-# Temporary disable the new I/O path
-#VBOX_WITH_NEW_IO_CODE = 1
+# Enable the new I/O path except on Linux
+if1of ($(KBUILD_TARGET), solaris win freebsd darwin)
+ VBOX_WITH_NEW_IO_CODE = 1
+endif
 
 #