[vfio-users] Win7 install no longer working

[Mark]

Fedora 27, qemu-kvm 2.10.1-2.fc27, libvirt 3.7.0, edk2-ovmf 5.fc27.

This appears to be related to the VBE 'shim' for UEFI installs.  The
installation process will not go past the windows flag screen.  It is the
same win7 installation ISO that I've successfully been using for 2 years.
If I remove the GPU passthrough and use regular qxl it will not proceed
either.

qemu command:
#!/bin/bash
qemu-kvm \
-vga qxl \
-enable-kvm \
-m 10240 \
-cpu host,kvm=off \
-smp 4,sockets=1,cores=4,threads=1 \
-drive if=pflash,format=raw,readonly,file=/usr/share/edk2/ovmf/OVMF_CODE.fd
\
-drive if=pflash,format=raw,file=/home/m/7vm.fd \
-vga cirrus \
-device vfio-pci,host=01:00.0,bus=pci.0,addr=7,multifunction=on \
-device virtio-scsi-pci,id=scsi \
-boot menu=on \
-drive file=/dev/mapper/lvm-win7,id=disk,format=raw,if=none \
-drive file=/home/m/X17-58997.iso,id=virtiocd,if=none \
-device ide-cd,bus=ide.1,drive=virtiocd \
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