Comment 9 for bug 1825195

(In reply to Patrick O'Callaghan from comment #4)
> (In reply to Daniel Berrange from comment #3)
> > Maybe the problematic guest was in fact installed under an even earlier
> > Fedora release than the Windows guest ?
> >
> > In any case, while this is a genuine problem, I don't think we're going to
> > try todo anything to automagically remove the flags on upgrade, so i'm
> > moving this to WONTFIX.
>
> In fact it's the oher way round. The Windows guest was installed over a year
> ago. The Fedora guest is only a couple of months old at most.

FYI an attempt to create a new VM triggered this error again. Since the VM XML file was never created, I had to track down the offending line in /usr/share/libvirt/cpu_map/x86_features.xml and remove it.