diff -r 44dc3d796110 -r 3aba4a42d8ad src/hotspot/share/gc/z/zForwardingTable.cpp
--- a/src/hotspot/share/gc/z/zForwardingTable.cpp	Mon Oct 28 11:21:23 2019 +0100
+++ b/src/hotspot/share/gc/z/zForwardingTable.cpp	Mon Oct 28 11:23:28 2019 +0100
@@ -22,7 +22,6 @@
  */
 
 #include "precompiled.hpp"
-#include "gc/z/zAddress.inline.hpp"
 #include "gc/z/zForwarding.inline.hpp"
 #include "gc/z/zForwardingTable.inline.hpp"
 #include "gc/z/zGlobals.hpp"
@@ -33,17 +32,17 @@
     _map(ZAddressOffsetMax) {}
 
 void ZForwardingTable::insert(ZForwarding* forwarding) {
-  const uintptr_t addr = ZAddress::good(forwarding->start());
+  const uintptr_t offset = forwarding->start();
   const size_t size = forwarding->size();
 
-  assert(get(addr) == NULL, "Invalid entry");
-  _map.put(addr, size, forwarding);
+  assert(_map.get(offset) == NULL, "Invalid entry");
+  _map.put(offset, size, forwarding);
 }
 
 void ZForwardingTable::remove(ZForwarding* forwarding) {
-  const uintptr_t addr = ZAddress::good(forwarding->start());
+  const uintptr_t offset = forwarding->start();
   const size_t size = forwarding->size();
 
-  assert(get(addr) == forwarding, "Invalid entry");
-  _map.put(addr, size, NULL);
+  assert(_map.get(offset) == forwarding, "Invalid entry");
+  _map.put(offset, size, NULL);
 }