<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- SPDX-License-Identifier: LGPL-2.1+
--->
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="machine-id">
<refentryinfo>
<para>The machine ID may be set, for example when network booting, with the
<varname>systemd.machine_id=</varname> kernel command line parameter or by passing the
- option <option>--machine-id=</option> to systemd. An ID is specified in this manner
+ option <option>--machine-id=</option> to systemd. An ID specified in this manner
has higher priority and will be used instead of the ID stored in
<filename>/etc/machine-id</filename>.</para>
be used. If this file is empty or missing, <filename>systemd</filename> will attempt
to use the D-Bus machine ID from <filename>/var/lib/dbus/machine-id</filename>, the
value of the kernel command line option <varname>container_uuid</varname>, the KVM DMI
- <filename>product_uuid</filename> (on KVM systems), and finally a randomly generated
- UUID.</para>
+ <filename>product_uuid</filename> or the devicetree <filename>vm,uuid</filename>
+ (on KVM systems), and finally a randomly generated UUID.</para>
<para>After the machine ID is established,
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>