Re: [PATCH v8 00/23] efi/x86: Avoid bare metal decompressor during EFI boot

[Ard Biesheuvel]

On Sun, 6 Aug 2023 at 12:17, Borislav Petkov <bp@xxxxxxxxx> wrote:
>
> On Sun, Aug 06, 2023 at 12:05:25PM +0200, Ard Biesheuvel wrote:
> > I suspect this should fix the issue:
> >
> > --- a/arch/x86/kernel/head_64.S
> > +++ b/arch/x86/kernel/head_64.S
> > @@ -110,6 +110,7 @@ SYM_CODE_START_NOALIGN(startup_64)
> >          * programmed into CR3.
> >          */
> >         leaq    _text(%rip), %rdi
> > +       movq    %r15, %rsi
> >         call    __startup_64
>
> Yah, I was suspecting we're not passing boot_params properly somewhere.
> Aaand there it is.
>
> So yes, that fixes it.
>
> Lemme know when you've refreshed your branch so that I can continue
> testing.
>

https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/log/?h=x86-efistub-cleanup-v9