$OpenBSD: patch-v8_src_globals_h,v 1.3 2016/10/27 18:30:41 robert Exp $
--- v8/src/globals.h.orig.port	Thu Sep  1 11:40:44 2016
+++ v8/src/globals.h	Thu Sep  1 11:41:23 2016
@@ -155,7 +155,11 @@ const size_t kCodeRangeAreaAlignment = 256 * MB;
 const size_t kMaximalCodeRangeSize = 512 * MB;
 const size_t kCodeRangeAreaAlignment = 64 * KB;  // OS page on PPC Linux
 #else
+#if defined(__OpenBSD__)
+const size_t kMaximalCodeRangeSize = 256 * MB;
+#else
 const size_t kMaximalCodeRangeSize = 512 * MB;
+#endif
 const size_t kCodeRangeAreaAlignment = 4 * KB;  // OS page.
 #endif
 #if V8_OS_WIN
