--- a/hotspot/test/Makefile	Fri Apr 17 10:53:31 2015 +0200
+++ b/hotspot/test/Makefile	Fri Apr 17 16:12:16 2015 -0700
@@ -279,6 +279,8 @@
 # Default JTREG to run
 JTREG = $(JT_HOME)/bin/jtreg
 
+# Use agent mode
+JTREG_BASIC_OPTIONS += -agentvm
 # Only run automatic tests
 JTREG_BASIC_OPTIONS += -a
 # Report details on all failed or error tests, times too