===============================================
This document describes how to build and install Open vSwitch on a
-Citrix XenServer 5.5.0 host. If you want to install Open vSwitch on a
+Citrix XenServer host. If you want to install Open vSwitch on a
generic Linux host, see INSTALL.Linux instead.
+These instructions have been tested with XenServer versions 5.5.0,
+5.5.0-24648p (Update 1), 5.5.0-25727p (Update 2), and 5.5.900.
+
Building Open vSwitch for XenServer
-----------------------------------