Re: [GIT PULL] EFI updates for v6.15

[Ingo Molnar <mingo@kernel.org>]

* Ard Biesheuvel <ardb@kernel.org> wrote:

> On Tue, 1 Apr 2025 at 11:32, Ingo Molnar <mingo@kernel.org> wrote:
> >
> >
> > * Ard Biesheuvel <ardb@kernel.org> wrote:
> >
> > > > Look into arch/x86/lib/ and you'll see that EFI functionality
> > > > doesn't really fit there.
> > >
> > > Again, EFI is only one aspect of this. The SEV-SNP startup code and
> > > the early 5-level paging are used by non-EFI boot as well. But they
> > > suffer from the same issue (C code that runs so early that it does
> > > not tolerate ordinary non-PIC codegen with instrumentation etc)
> > >
> > > Should we maybe classify this as startup code? And put it in
> > > arch/x86/boot/startup or arch/x86/kernel/startup?
> >
> > Yeah, so the canonical place for platform startup code is
> > arch/x86/platform/, we could certainly open up arch/x86/platform/efi/
> > there too, in addition to arch/x86/boot/efi/.
> >
> 
> But what about code that has nothing to do with EFI? That is what I 
> am asking about.

Would arch/x86/boot/startup/ or arch/x86/boot/init/ work? We can open 
up an efi/ subdirectory within it. (but flat would be fine too.)

It would be an improvement to concentrate such code into a single 
place, I think.

Thanks,

	Ingo