$OpenBSD: patch-mono_mini_main_c,v 1.4 2016/06/26 10:40:28 robert Exp $
--- mono/mini/main.c.orig	Thu Jun  9 17:01:57 2016
+++ mono/mini/main.c	Thu Jun 23 19:29:27 2016
@@ -167,10 +167,14 @@ main (void)
 }
 
 #else
-
+#include <sched.h>
 int
 main (int argc, char* argv[])
 {
+#if defined(__powerpc__) && defined (__GLIBC__)
+  unsigned long mask = 1;
+  sched_setaffinity(0, sizeof(mask), &mask);
+#endif
 	mono_build_date = build_date;
 
 	probe_embedded (argv [0], &argc, &argv);
