diff --git a/sys/amd64/conf/NOTES b/sys/amd64/conf/NOTES
--- a/sys/amd64/conf/NOTES
+++ b/sys/amd64/conf/NOTES
@@ -19,6 +19,12 @@
 # Optional:
 device		atpic			# Optional legacy pic support
 device		mptable			# Optional MPSPEC mptable support
+options 	HMP			# Heterogeneous Multi-Processing
+
+#
+# Hardware Feedback Interface device.
+#
+device		intelhfi		# Intel Thread Director driver.
 
 
 #####################################################################