--- old/make/test/JtregNativeJdk.gmk	2019-07-01 11:37:06.675819002 +0200
+++ new/make/test/JtregNativeJdk.gmk	2019-07-01 11:37:06.479819631 +0200
@@ -73,7 +73,7 @@
     BUILD_JDK_JTREG_LIBRARIES_LIBS_libInheritedChannel := -ljava -lsocket -lnsl
   endif
   BUILD_JDK_JTREG_EXECUTABLES_LIBS_exeJliLaunchTest := -ljli
-  BUILD_JDK_JTREG_EXECUTABLES_LIBS_exeCallerAccessTest := -ljvm
+  BUILD_JDK_JTREG_EXECUTABLES_LIBS_exeCallerAccessTest := -ljvm -lpthread
 endif
 
 ifeq ($(call isTargetOs, macosx), true)
--- old/test/jdk/java/lang/reflect/exeCallerAccessTest/exeCallerAccessTest.c	2019-07-01 11:37:07.203817307 +0200
+++ new/test/jdk/java/lang/reflect/exeCallerAccessTest/exeCallerAccessTest.c	2019-07-01 11:37:07.007817937 +0200
@@ -21,12 +21,27 @@
  * questions.
  */
 
+/* On AIX, unfortunately, we are not able to invoke the libjvm on the primordial thread. */
+#ifdef _AIX
+  #define CREATEVM_IN_NEW_THREAD
+#else
+  #undef CREATEVM_IN_NEW_THREAD
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "jni.h"
 #include "assert.h"
 
+#ifdef CREATEVM_IN_NEW_THREAD
+  #ifdef WIN32
+    #error Not on Windows.
+  #else
+    #include "pthread.h"
+  #endif
+#endif
+
 static jclass    classClass;
 static jclass    iaeClass;
 static jmethodID mid_Class_forName;
@@ -36,7 +51,7 @@
 int getField(JNIEnv *env, char* declaringClass_name, char* field_name);
 int checkAndClearIllegalAccessExceptionThrown(JNIEnv *env);
 
-int main(int argc, char** args) {
+static int main_inner(int argc, char** args) {
     JavaVM *jvm;
     JNIEnv *env;
     JavaVMInitArgs vm_args;
@@ -127,3 +142,50 @@
     return 0;
 }
 
+
+#ifdef CREATEVM_IN_NEW_THREAD
+
+struct args_t {
+  int argc; char** argv;
+};
+
+#define STACK_SIZE 0x200000
+
+static void* thread_wrapper(void* p) {
+  const struct args_t* const p_args = (const struct args_t*) p;
+  main_inner(p_args->argc, p_args->argv);
+  return 0;
+}
+
+static void run_in_new_thread(const struct args_t* args) {
+  pthread_t tid;
+  pthread_attr_t attr;
+
+  pthread_attr_init(&attr);
+  pthread_attr_setstacksize(&attr, STACK_SIZE);
+
+  if (pthread_create(&tid, &attr, thread_wrapper, (void*)args) != 0) {
+    fprintf(stderr, "Failed to create main thread\n");
+    exit(2);
+  }
+
+  if (pthread_join(tid, NULL) != 0) {
+    fprintf(stderr, "Failed to join main thread\n");
+    exit(2);
+  }
+}
+
+int main(int argc, char** args) {
+  struct args_t a;
+  a.argc = argc;
+  a.argv = args;
+  run_in_new_thread(&a);
+}
+
+#else
+
+int main(int argc, char** args) {
+   main_inner(argc, args);
+}
+
+#endif /* CREATEVM_IN_NEW_THREAD */