How to use Windows 10 OEM license in libvirt VM (<smbios mode='host' /> does not work as Windows seems to verify UUID; apparmor/security configuration changes may be needed)

domain.xml

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <!-- ... -->
  <qemu:commandline>
    <qemu:arg value='-acpitable'/>
    <qemu:arg value='file=/some/path/slic.bin'/>
    <qemu:arg value='-acpitable'/>
    <qemu:arg value='file=/some/path/msdm.bin'/>
    <qemu:arg value='-smbios'/>
    <qemu:arg value='file=/some/path/smbios_type_0.bin'/>
    <qemu:arg value='-smbios'/>
    <qemu:arg value='file=/some/path/smbios_type_1.bin'/>
  </qemu:commandline>
</domain>

slic-dump

#!/bin/bash

set -e

cat /sys/firmware/acpi/tables/SLIC > slic.bin
cat /sys/firmware/acpi/tables/MSDM > msdm.bin
dmidecode -t 0 -u | grep $'^\t\t[^"]' | xargs -n1 | perl -lne 'printf "%c", hex($_)' > smbios_type_0.bin
dmidecode -t 1 -u | grep $'^\t\t[^"]' | xargs -n1 | perl -lne 'printf "%c", hex($_)' > smbios_type_1.bin

I'm getting some errors when try to dump the smbios_type_1.bin table. My laptop is a Dell G5 5590.

dmidecode -t 1 -u | grep $'^\t\t[^"]' | xargs -n1 | perl -lne 'printf "%c", hex($_)' > smbios_type_1.bin
Wide character in printf at -e line 1, <> line 58.
Wide character in printf at -e line 1, <> line 64.

Is it really needed? Is any workaround?

Using perl's catch-all -CSDA approach works for me..
dmidecode -t 1 -u | grep $'^\t\t[^"]' | xargs -n1 | perl -CSDA -lne 'printf "%c", hex($_)' > smbios_type_1.bin

I'm getting some errors when try to dump the smbios_type_1.bin table. My laptop is a Dell G5 5590.

Please use the correct command I have provided above, and here: https://gist.github.com/xrobau/d98fe46c4677e46577ba2f20f35b783b