ia64 does not have the same degree of stealth include file nesting,

so it needs an explicit #include <machine/frame.h> to get 'struct
trapframe'.  The fact that it needs this at this level is rather bogus
but it will not compile without it.

sys/kern/kern_kse.c

@@ -51,6 +51,8 @@
 #include <vm/uma.h>
 #include <vm/vm_map.h>
 
+#include <machine/frame.h>
+
 /*
  * Thread related storage.
  */

sys/kern/kern_thread.c

@@ -51,6 +51,8 @@
 #include <vm/uma.h>
 #include <vm/vm_map.h>
 
+#include <machine/frame.h>
+
 /*
  * Thread related storage.
  */