--- a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp	Wed Mar 11 14:16:13 2009 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp	Thu Mar 12 10:37:46 2009 -0700
@@ -104,12 +104,38 @@
                   og_min_size, og_max_size,
                   yg_min_size, yg_max_size);
 
+  const size_t total_reserved = pg_max_size + og_max_size + yg_max_size;
+  char* addr = Universe::preferred_heap_base(total_reserved, Universe::UnscaledNarrowOop);
+
   // The main part of the heap (old gen + young gen) can often use a larger page
   // size than is needed or wanted for the perm gen.  Use the "compound
   // alignment" ReservedSpace ctor to avoid having to use the same page size for
   // all gens.
+
   ReservedHeapSpace heap_rs(pg_max_size, pg_align, og_max_size + yg_max_size,
-                            og_align);
+                            og_align, addr);
+
+  if (UseCompressedOops) {
+    if (addr != NULL && !heap_rs.is_reserved()) {
+      // Failed to reserve at specified address - the requested memory
+      // region is taken already, for example, by 'java' launcher.
+      // Try again to reserver heap higher.
+      addr = Universe::preferred_heap_base(total_reserved, Universe::ZeroBasedNarrowOop);
+      ReservedHeapSpace heap_rs0(pg_max_size, pg_align, og_max_size + yg_max_size,
+                                 og_align, addr);
+      if (addr != NULL && !heap_rs0.is_reserved()) {
+        // Failed to reserve at specified address again - give up.
+        addr = Universe::preferred_heap_base(total_reserved, Universe::HeapBasedNarrowOop);
+        assert(addr == NULL, "");
+        ReservedHeapSpace heap_rs1(pg_max_size, pg_align, og_max_size + yg_max_size,
+                                   og_align, addr);
+        heap_rs = heap_rs1;
+      } else {
+        heap_rs = heap_rs0;
+      }
+    }
+  }
+
   os::trace_page_sizes("ps perm", pg_min_size, pg_max_size, pg_page_sz,
                        heap_rs.base(), pg_max_size);
   os::trace_page_sizes("ps main", og_min_size + yg_min_size,