File s390-java-opts.patch of Package java-1_8_0-openjdk.2298

--- jdk8/common/autoconf/boot-jdk.m4	2015-12-22 20:16:46.000000000 +0100
+++ jdk8/common/autoconf/boot-jdk.m4	2016-01-23 13:16:40.069301419 +0100
@@ -329,21 +329,12 @@
   AC_MSG_CHECKING([flags for boot jdk java command for big workloads])
 
   # Starting amount of heap memory.
-  ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA])
+  ADD_JVM_ARG_IF_OK([-Xms256M],boot_jdk_jvmargs_big,[$JAVA])
 
   # Maximum amount of heap memory.
   # Maximum stack size.
-  if test "x$BOOT_JDK_BITS" = x32; then
-    JVM_MAX_HEAP=1100M
+  JVM_MAX_HEAP=768M
     STACK_SIZE=768
-  else
-    # Running Javac on a JVM on a 64-bit machine, takes more space since 64-bit
-    # pointers are used. Apparently, we need to increase the heap and stack
-    # space for the jvm. More specifically, when running javac to build huge
-    # jdk batch
-    JVM_MAX_HEAP=1600M
-    STACK_SIZE=1536
-  fi
   ADD_JVM_ARG_IF_OK([-Xmx$JVM_MAX_HEAP],boot_jdk_jvmargs_big,[$JAVA])
   ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA])
   ADD_JVM_ARG_IF_OK([-XX:PermSize=32m],boot_jdk_jvmargs_big,[$JAVA])