diff -r c97db0855565 -r 758c07667682 src/cpu/ppc/vm/vm_version_ppc.cpp
--- a/src/cpu/ppc/vm/vm_version_ppc.cpp	Tue Feb 04 17:38:01 2020 +0800
+++ b/src/cpu/ppc/vm/vm_version_ppc.cpp	Tue Feb 04 18:13:14 2020 +0800
@@ -194,6 +194,11 @@
     FLAG_SET_DEFAULT(UseAESIntrinsics, false);
   }
 
+  if (UseGHASHIntrinsics) {
+    warning("GHASH intrinsics are not available on this CPU");
+    FLAG_SET_DEFAULT(UseGHASHIntrinsics, false);
+  }
+
   if (has_vshasig()) {
     if (FLAG_IS_DEFAULT(UseSHA)) {
       UseSHA = true;