--- a/src/hotspot/cpu/x86/vm_version_ext_x86.hpp	Thu Jul 12 16:30:47 2018 +0200
+++ b/src/hotspot/cpu/x86/vm_version_ext_x86.hpp	Wed Jul 11 16:11:10 2018 +0200
@@ -63,6 +63,7 @@
   static bool cpu_is_em64t(void);
   static bool is_netburst(void);
 
+  // Returns bytes written excluding termninating null byte.
   static size_t cpu_write_support_string(char* const buf, size_t buf_len);
   static void resolve_cpu_information_details(void);
   static jlong max_qualified_cpu_freq_from_brand_string(void);