Re: [PATCH v2 0/2] x86/kexec: UKI Support

[Dave Young]

On Wed, 20 Sept 2023 at 15:43, Dave Young <dyoung@xxxxxxxxxx> wrote:
>
> > > In the end the only benefit this series brings is to extend the
> > > signature checking on the whole UKI except of just the kernel image.
> > > Everything else can also be done in user space. Compared to the
> > > problems described above this is a very small gain for me.
> >
> > Correct. That is the benefit of pulling the UKI apart in the
> > kernel. However having to sign the kernel inside the UKI defeats
> > the whole point.
>
>
> Pingfan added the zboot load support in kexec-tools, I know that he is
> trying to sign the zboot image and the inside kernel twice. So
> probably there are some common areas which can be discussed.
> Added Ard and Pingfan in cc.
> http://lists.infradead.org/pipermail/kexec/2023-August/027674.html
>

Here is another thread of the initial try in kernel with a few more
options eg. some fake efi service helpers.
https://lore.kernel.org/linux-arm-kernel/ZBvKSis+dfnqa+Vz@xxxxxxxxxxxxxxxxxxxxxxxxxx/T/#m42abb0ad3c10126b8b3bfae8a596deb707d6f76e

>
> Thanks
> Dave