Re: [PATCH 4/6] efi: Get the secure boot status [ver #2]

From: David Howells
Date: Wed Nov 23 2016 - 04:56:30 EST

Lukas Wunner <lukas@xxxxxxxxx> wrote:

> It just occurred to me that the boot_params struct is populated in
> make_boot_params(), perhaps it makes sense to move this line there.
> Otherwise LGTM.

Ummm... Looking at arch/x86/boot/compressed/head_64.S, make_boot_params() is
only called if the stub is entered through efi_pe_entry, not if entered
through efi64_stub_entry, whereas efi_main() is called in both cases. I think
entry through efi32_stub_entry may also skip make_boot_params().

The comment on make_boot_params() suggests that this function is only used if
whoever booted the kernel didn't supply it.