Index: /trunk/doc/manual/en_US/user_GuestAdditions.xml
===================================================================
--- /trunk/doc/manual/en_US/user_GuestAdditions.xml	(revision 59895)
+++ /trunk/doc/manual/en_US/user_GuestAdditions.xml	(revision 59896)
@@ -1759,4 +1759,11 @@
       </note>
 
+      <note>
+        <para>Memory ballooning does not work with large pages enabled. To
+        turn off large pages support for a VM, run
+        <computeroutput>VBoxManage modifyvm &lt;VM name&gt; --largepages off</computeroutput>
+        </para>
+      </note>
+
       <para>Normally, to change the amount of memory allocated to a virtual
       machine, one has to shut down the virtual machine entirely and modify