--- old/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp	2018-08-20 11:53:26.321392646 +0100
+++ new/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp	2018-08-20 11:53:26.029391776 +0100
@@ -129,6 +129,9 @@
 
   int dcache_line = VM_Version::dcache_line_size();
 
+  // publish data cache line flush size via generic field
+  _data_cache_line_flush_size = dcache_line;
+
   if (FLAG_IS_DEFAULT(AllocatePrefetchDistance))
     FLAG_SET_DEFAULT(AllocatePrefetchDistance, 3*dcache_line);
   if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize))