[libvirt] [PATCH] docs: document that vfio is default for hostdev networks too

[Laine Stump]

When the default was changed from kvm to vfio, the documentation for
hostdev and interface was changed, but the documentation in <network>
was forgotten.
---
 docs/formatnetwork.html.in | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in
index fc56b42..aeafbd9 100644
--- a/docs/formatnetwork.html.in
+++ b/docs/formatnetwork.html.in
@@ -282,16 +282,19 @@
             definition. <span class="since"> Since 0.10.0</span>
 
             <p>
-              To use VFIO device assignment rather than
-              traditional/legacy KVM device assignment (VFIO is a new
-              method of device assignment that is compatible with UEFI
-              Secure Boot), a <forward type='hostdev'> interface
-              can have an optional <code>driver</code> sub-element
-              with a <code>name</code> attribute set to "vfio". To use
-              legacy KVM device assignment you can
-              set <code>name</code> to "kvm" (or simply omit the
-              <driver> element, since "kvm" is currently the
-              default).
+              To force use of a particular type of device assignment,
+              a <forward type='hostdev'> interface can have an
+              optional <code>driver</code> sub-element with
+              a <code>name</code> attribute set to either "vfio" (VFIO
+              is a new method of device assignment that is compatible
+              with UEFI Secure Boot) or "kvm" (the legacy device
+              assignment handled directly by the KVM kernel
+              module). The default is "vfio" on systems where the VFIO
+              driver is available and loaded, and "kvm" on older
+              systems, or those where the VFIO driver hasn't been
+              loaded. When specified, device assignment will fail if
+              the requested method of device assignment isn't
+              available on the host.
               <span class="since">Since 1.0.5 (QEMU and KVM only, requires kernel 3.6 or newer)</span>
             </p>
 
-- 
1.9.0