--- old/src/hotspot/share/gc/g1/g1FromCardCache.cpp	2018-05-16 17:25:19.145480295 +0200
+++ new/src/hotspot/share/gc/g1/g1FromCardCache.cpp	2018-05-16 17:25:18.840470915 +0200
@@ -46,6 +46,10 @@
   _cache = Padded2DArray<uintptr_t, mtGC>::create_unfreeable(_max_regions,
                                                              num_par_rem_sets,
                                                              &_static_mem_size);
+
+  if (AlwaysPreTouch) {
+    invalidate(0, _max_regions);
+  }
 }
 
 void G1FromCardCache::invalidate(uint start_idx, size_t new_num_regions) {