--- old/src/hotspot/os/linux/gc/z/zVirtualMemory_linux.cpp	2019-08-09 10:45:20.180770193 +0200
+++ /dev/null	2019-02-06 06:50:20.578913862 +0100
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-#include "precompiled.hpp"
-#include "gc/z/zVirtualMemory.hpp"
-#include "logging/log.hpp"
-
-#include <sys/mman.h>
-#include <sys/types.h>
-
-bool ZVirtualMemoryManager::reserve(uintptr_t start, size_t size) {
-  // Reserve address space
-  const uintptr_t actual_start = (uintptr_t)mmap((void*)start, size, PROT_NONE,
-                                                 MAP_ANONYMOUS|MAP_PRIVATE|MAP_NORESERVE, -1, 0);
-  if (actual_start != start) {
-    log_error(gc)("Failed to reserve address space for Java heap");
-    return false;
-  }
-
-  return true;
-}