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

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Message-ID: <31281.1479894780@warthog.procyon.org.uk>
Date:   Wed, 23 Nov 2016 09:53:00 +0000
From:   David Howells <dhowells@...hat.com>
To:     Lukas Wunner <lukas@...ner.de>
Cc:     dhowells@...hat.com, linux-efi@...r.kernel.org,
        linux-security-module@...r.kernel.org, keyrings@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] efi: Get the secure boot status [ver #2]

Lukas Wunner <lukas@...ner.de> 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.

David