bhyve: document support for wiring guest memory

Signed-off-by: NFabian Freyer <fabian.freyer@physik.tu-berlin.de>
Reviewed-by: NRoman Bogorodskiy <bogorodskiy@gmail.com>

docs/drvbhyve.html.in

@@ -430,6 +430,20 @@ supports Intel e1000 network adapter emulation. It's supported in libvirt
       &lt;model type='<b>e1000</b>'/&gt;
     &lt;/interface&gt;
 ...
+</pre>
+
+<h3><a id="wired">Wiring guest memory</a></h3>
+
+<p><span class="since">Since 4.4.0</span>, it's possible to specify that guest memory should
+be wired and cannot be swapped out as follows:</p>
+<pre>
+&lt;domain type="bhyve"&gt;
+    ...
+    &lt;memoryBacking&gt;
+      &lt;locked/&gt;
+    &lt;/memoryBacking&gt;
+    ...
+&lt;/domain&gt;
 </pre>
 
   </body>

docs/news.xml

@@ -35,6 +35,16 @@
 <libvirt>
   <release version="v4.4.0" date="unreleased">
     <section title="New features">
+      <change>
+        <summary>
+          bhyve: Support locking guest memory
+        </summary>
+        <description>
+          Bhyve's guest memory may be wired using the
+          <code>&lt;memoryBacking&gt;&lt;locked/&gt;&lt;/memoryBacking&gt;</code>
+          element.
+        </description>
+      </change>
     </section>
     <section title="Improvements">
     </section>