src/cpu/x86/vm/vm_version_x86.cpp

@@ -978,10 +978,15 @@
 
   if (FLAG_IS_DEFAULT(ContendedPaddingWidth) &&
      (cache_line_size > ContendedPaddingWidth))
      ContendedPaddingWidth = cache_line_size;
 
+  // This machine allows unaligned memory accesses
+  if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
+    FLAG_SET_DEFAULT(UseUnalignedAccesses, true);
+  }
+
 #ifndef PRODUCT
   if (PrintMiscellaneous && Verbose) {
     tty->print_cr("Logical CPUs per core: %u",
                   logical_processors_per_package());
     tty->print_cr("L1 data cache line size: %u", L1_data_cache_line_size());