[svsm-devel] Potential project on implementing AMD SEV emulation in QEMU

[Tom Dohrmann]

Hi Stefano,

(I do realize I'm not the Tom you wanted to ask)

A while ago, there was a CTF event (hxp 38C3 CTF) where one of the 
challenges was about attacking some code running inside an SEV guest. 
The challenge authors implemented SME & SEV for QEMU's TCG backend, so 
that players could participate even if they don't have the hardware. 
Their patches are public 
<https://2024.ctf.link/internal/challenge/6b7ff9d7-efc9-47fc-a06e-4ab9ae6d9eaa/>. 
Their implementation is probably not complete/accurate and it's likely 
not particularly cleanly implemented, but IIRC it was good enough to run 
OVMF and Linux. It might be a good starting point for someone to look at 
to figure out what needs to be done.

Regards,
Tom

On 4/17/25 17:26, Stefano Garzarella wrote:
> 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
>
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