[RFCv2 0/9] UEFI emulator for kexec

[Jarkko Sakkinen]

On Sat Sep 7, 2024 at 2:27 PM EEST, Jarkko Sakkinen wrote:
> On Fri Sep 6, 2024 at 1:54 PM EEST, Philipp Rudo wrote:
> > Let me throw an other wild idea in the ring. Instead of implementing
> > a EFI runtime we could also include a eBPF version of the stub into the
> > images. kexec could then extract the eBPF program and let it run just
> > like any other eBPF program with all the pros (and cons) that come with
> > it. That won't be as generic as the EFI runtime, e.g. you couldn't
> > simply kexec any OS installer. On the other hand it would make it
> > easier to port UKIs et al. to non-EFI systems. What do you think?
>
> BPF would have some guarantees that are favorable such as programs
> always end, even faulty ones. It always has implicit "ExitBootServices".
>
> Just a remark.

Some days ago I was thinking could some of the kernel functionality be
eBPF at least like in formal theory because most of it is amortized,
i.e. does a fixed chunk of work. Not going into that rabbit hole but
I really like this idea and could be good experimentation ground for
such innovation.

BR, Jarkko