X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=README;h=7871c763c01803c903f5e7881f1ad18ed7a44e46;hb=83fbfe31465e47717226566a4fe69ce8b642a603;hp=2bdbfdcf96f1a03009b08a7508ea4f449c9556f9;hpb=3f355f47f8e7343e909ccfa854454d667baf3c38;p=sliver-openvswitch.git

diff --git a/README b/README
index 2bdbfdcf9..7871c763c 100644
--- a/README
+++ b/README
@@ -28,9 +28,15 @@ vSwitch supports the following features:
     * Support for OpenFlow
     * Compatibility layer for the Linux bridging code
 
-Open vSwitch supports Linux 2.6.15 and up, with testing focused on
-2.6.18 with Centos and Xen patches and version 2.6.26 from kernel.org.
-Open vSwitch also has special support for Citrix XenServer hosts.
+The included Linux kernel module supports Linux 2.6.15 and up, with
+testing focused on 2.6.18 with Centos and Xen patches and version
+2.6.26 from kernel.org.  Open vSwitch also has special support for
+Citrix XenServer hosts.
+
+Open vSwitch can also operate, at a cost in performance, entirely in
+userspace, without assistance from a kernel module.  This userspace
+implementation should be easier to port than the kernel-based switch.
+It is considered experimental.
 
 What's here?
 ------------
@@ -85,6 +91,9 @@ read INSTALL.bridge.
 To build RPMs for installing Open vSwitch on a Citrix XenServer host
 or resource pool, read INSTALL.XenServer.
 
+To install Open vSwitch without using a kernel module, read
+INSTALL.userspace.
+
 To learn set up SSL support for Open vSwitch, read INSTALL.SSL.
 
 Each Open vSwitch userspace program is accompanied by a manpage.  Many