Thanks for your first patch! However...
In
https://bugzilla.redhat.com/show_bug.cgi?id=1015636, we call out:
https://lists.gnu.org/archive/html/qemu-devel/2013-10/msg00908.html
where the qemu developers mention that we should be tolerant of all
future unknown values, rather than the current setup of choking on
unknown strings.
Would you like to prepare a followup along those lines?
Sorry but now I have no time for such big patches