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docs: bhyve: document sound device and VNC bits

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* Document sound device support,
 * Document VNC password configuration and framebuffer resolution.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This commit is contained in:
Roman Bogorodskiy 2020-09-24 20:15:34 +04:00
parent 34dc2c964c
commit 9c2ba74ad6
1 changed files with 47 additions and 0 deletions
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docs/drvbhyve.html.in
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@ -389,6 +389,30 @@ it with the <code>port</code> attribute):</p>
&lt;graphics type='vnc' autoport='yes'&gt;
</pre>
<p><span class="since">Since 6.8.0</span>, it's possible to set framebuffer resolution
using the <code>resolution</code> sub-element:</p>
<pre>
&lt;video&gt;
&lt;model type='gop' heads='1' primary='yes'&gt;
&lt;resolution x='800' y='600'/&gt;
&lt;/model&gt;
&lt;/video&gt;
</pre>
<p><span class="since">Since 6.8.0</span>, VNC server can be configured to use
password based authentication:</p>
<pre>
&lt;graphics type='vnc' port='5904' passwd='foobar'&gt;
&lt;listen type='address' address='127.0.0.1'/&gt;
&lt;/graphics&gt;
</pre>
<p>Note: VNC password authentication is known to be cryptographically weak.
Additionally, the password is passed as a command line argument in clear text.
Make sure you understand the risks associated with this feature before using it.</p>
<h3><a id="clockconfig">Clock configuration</a></h3>
<p>Originally bhyve supported only localtime for RTC. Support for UTC time was introduced in
@ -432,6 +456,29 @@ supports Intel e1000 network adapter emulation. It's supported in libvirt
...
</pre>
<h3><a id="sound">Sound device</a></h3>
<p>As of <a href="https://svnweb.freebsd.org/changeset/base/349355">FreeBSD changeset r349355</a>
bhyve supports sound device emulation. It's supported in libvirt
<span class="since">since 6.7.0</span>.</p>
<pre>
...
&lt;sound model='ich7'&gt;
&lt;audio id='1'/&gt;
&lt;/sound&gt;
&lt;audio id='1' type='oss'&gt;
&lt;input dev='/dev/dsp0'/&gt;
&lt;output dev='/dev/dsp0'/&gt;
&lt;/audio&gt;
...
</pre>
<p>Here, the <code>sound</code> element specifies the sound device as it's exposed
to the guest, with <code>ich7</code> being the only supported model now,
and the <code>audio</code> element specifies how the guest device is mapped
to the host sound device.</p>
<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