Potential project on implementing AMD SEV emulation in QEMU

Hi Tom,
yesterday in the Coconut-SVSM community call we talked about a
potential project with the University of Pisa to emulate AMD
SEV/SEV-ES/SEV-SNP support in QEMU.

Joerg rightly suggested having a step-by-step approach, supporting SEV
initially, as supporting SEV-SNP directly might be too much for a
master's thesis (about 6 months of work).

We wondered if you knew of any attempts already made in this regard,
but especially if you think it's a feasible thing.

Suggestions, ideas or partial works that can be reused are very welcome!

Thanks,
Stefano