9p: add virtio transport

This adds a transport to 9p for communicating between guests and a host
using a virtio based transport.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/Documentation/filesystems/9p.txt b/Documentation/filesystems/9p.txt
index b90f537af35c..bf8080640eba 100644
--- a/Documentation/filesystems/9p.txt
+++ b/Documentation/filesystems/9p.txt
@@ -42,10 +42,12 @@ OPTIONS
 
   trans=name    select an alternative transport.  Valid options are
                 currently:
-                        unix - specifying a named pipe mount point
-                        tcp  - specifying a normal TCP/IP connection
-                        fd   - used passed file descriptors for connection
+                        unix    - specifying a named pipe mount point
+                        tcp     - specifying a normal TCP/IP connection
+                        fd      - used passed file descriptors for connection
                                 (see rfdno and wfdno)
+                        virtio  - connect to the next virtio channel available
+                                (from lguest or KVM with trans_virtio module)
 
   uname=name    user name to attempt mount as on the remote server.  The
                 server may override or ignore this value.  Certain user