Index: /trunk/doc/manual/en_US/user_Introduction.xml
===================================================================
--- /trunk/doc/manual/en_US/user_Introduction.xml	(revision 37863)
+++ /trunk/doc/manual/en_US/user_Introduction.xml	(revision 37864)
@@ -541,4 +541,9 @@
                 <para>Intel PXE boot ROM with support for the E1000 network
                 card.</para>
+              </listitem>
+
+              <listitem>
+                <para>Experimental support for PCI passthrough on Linux hosts;
+                  see <xref linkend="pcipassthrough" />.</para>
               </listitem>
             </orderedlist></para>