docs: bhyve: document ignoring unknown MSRs

Ignoring unknown MSRs using <features> element
<msrs unknown='ignore'/> was supported for quite some already,
so add documentation for it for completeness of flags coverage,
as some guests can be extra picky about flags passed to bhyve,
and it's useful to know how to control those.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

diff --git a/docs/drvbhyve.html.in b/docs/drvbhyve.html.in
index 2e9cf5551b6d76868e1ee2ef0af279e6e7054f31..66a13be1f6bc94e64968fc2427e5f30eeafd9e50 100644 (file)
--- a/docs/drvbhyve.html.in
+++ b/docs/drvbhyve.html.in
@@ -462,6 +462,24 @@ Example:</p>
 &lt;/domain&gt;
 </pre>
 
+<h3><a id="msrs">Ignoring unknown MSRs reads and writes</a></h3>
+
+<p><span class="since">Since 5.1.0</span>, it's possible to make bhyve
+ignore accesses to unimplemented Model Specific Registers (MSRs).
+Example:</p>
+
+<pre>
+&lt;domain type="bhyve"&gt;
+    ...
+    &lt;features&gt;
+      ...
+      &lt;msrs unknown='ignore'/&gt;
+      ...
+    &lt;/features&gt;
+    ...
+&lt;/domain&gt;
+</pre>
+
 <h3><a id="bhyvecommand">Pass-through of arbitrary bhyve commands</a></h3>
 
 <p><span class="since">Since 5.1.0</span>, it's possible to pass additional command-line