You can extract the SLIC value from the ACPI table, and then pass it through to QEMU (Example from my Libvirt configuration):

See more details here: gist.github.com/…/49bd034d43e054bd1d8d4fec38c305e…

It is my understanding that this can only be used to run the OEM license one one instance in a VM, on the specific hardware that is originally licensed. IE, you virtualize the license if the bootOS is Linux, but you can’t run 2 instances of the same windows license inside each other.