<dd>The optional <code>loader</code> tag
refers to a firmware blob
used to assist the domain creation process. At this time, it is
only needed by Xen fully virtualized
Is the sentence "only needed by Xen fully virtualized" valid even now?
For example, the support for UEFI firmware has also been introduced,
which can be easily used by extracting bios.bin from
http://download.opensuse.org/repositories/home:/jejb1:/UEFI/openSUSE_12.2...
and passing its path under the <loader> option.
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Nehal J Wani