--- a/hotspot/src/cpu/aarch64/vm/vm_version_aarch64.cpp	Mon Mar 07 15:03:48 2016 -0800
+++ b/hotspot/src/cpu/aarch64/vm/vm_version_aarch64.cpp	Tue Mar 08 14:39:50 2016 +0000
@@ -61,6 +61,10 @@
 #define HWCAP_CRC32 (1<<7)
 #endif
 
+#ifndef HWCAP_ATOMICS
+#define HWCAP_ATOMICS (1<<8)
+#endif
+
 int VM_Version::_cpu;
 int VM_Version::_model;
 int VM_Version::_model2;
@@ -172,6 +176,7 @@
   if (auxv & HWCAP_AES)   strcat(buf, ", aes");
   if (auxv & HWCAP_SHA1)  strcat(buf, ", sha1");
   if (auxv & HWCAP_SHA2)  strcat(buf, ", sha256");
+  if (auxv & HWCAP_ATOMICS) strcat(buf, ", lse");
 
   _features_string = os::strdup(buf);
 
@@ -191,6 +196,15 @@
     FLAG_SET_DEFAULT(UseVectorizedMismatchIntrinsic, false);
   }
 
+  if (auxv & HWCAP_ATOMICS) {
+    if (FLAG_IS_DEFAULT(UseLSE))
+      FLAG_SET_DEFAULT(UseLSE, true);
+  } else {
+    if (UseLSE) {
+      warning("UseLSE specified, but not supported on this CPU");
+    }
+  }
+
   if (auxv & HWCAP_AES) {
     UseAES = UseAES || FLAG_IS_DEFAULT(UseAES);
     UseAESIntrinsics =