After JDK-8224820, the space between the Remapped heap view and the Marked1 heap view is no longer reserved. The ASCII art describing the address space layout should be updated to reflect that. Bug: https://bugs.openjdk.java.net/browse/JDK-8231776 Webrev: http://cr.openjdk.java.net/~pliden/8231776/webrev.0 /Per