On Thu, 11 Jan 2018, Linus Torvalds wrote:
> On Thu, Jan 11, 2018 at 12:37 PM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> >
> > 67a9108ed431 ("x86/efi: Build our own page table structures")
> >
> > got rid of EFI depending on real_mode_header->trampoline_pgd
>
> So I think it only got rid of by default - the codepath is still
> there, the allocation is still there, it's just that it's not actually
> used unless somebody does that "efi=old_mmap" thing.
Yes, the trampoline_pgd is still around, but I can't figure out how it
would be used after boot. Confused, digging more.
Thanks,
tglx