Comment # 1 on bug 919692 from Charles Arnold

(In reply to Andreas Schwab from comment #0)
> virt-manager has removed the option to set the architecture of the VM to be
> created, which makes it impossible to install a 32-bit OS in the VM.

I can install 32bit VMs without needing to specify the architecture.
I just point at the 32bit installation source. Does this not work for
you?

There is one exception to the above. os13.2 32bit will not install as
a Xen PV guest because it is missing the Xen kernel/initrd on the media
found in the /boot location.  See bug 906248. Your patch won't fix that
problem. You haven't said whether you are using Xen or KVM.