Testing code present in SMM

[Mick]

Dear everyone,

For my master project I will apply hardening techniques (sanitizers/CFI) to
System Mangement Mode (SMM). Now for my evaluation, I want to test code in
SMM and ideally cover all SMI handlers coreboot offers. However, in my
experience, System Management Interrupts (SMIs) rarely trigger and the
variety in SMIs is also rather low (testing via QEMU). I was wondering
whether anyone is familiar with testing such a low-level component. In the
coreboot repository, I couldn't find any tests related to SMM and looking
online also hasn't provided me any answers.

Is there anyone who has experience with similar problems or can perhaps
point me into the right direction, as I am inexperienced with testing such
low-level components.

I hope I've explained myself clearly, if not, please indicate so!

Kind regards,

Mick