linux-kernel - Re: [PATCH 7/7] efi: Print the secure boot status in x86 setup

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Message-ID: <13531.1486139256@warthog.procyon.org.uk>
Date:   Fri, 03 Feb 2017 16:27:36 +0000
From:   David Howells <dhowells@...hat.com>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     dhowells@...hat.com, Matt Fleming <matt@...eblueprint.co.uk>,
        "linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-security-module <linux-security-module@...r.kernel.org>,
        keyrings@...r.kernel.org,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 7/7] efi: Print the secure boot status in x86 setup_arch() [ver #7]

Ard Biesheuvel <ard.biesheuvel@...aro.org> wrote:

> Yes, but only if you are booting via UEFI, no?

Why limit it so?  Even if you don't boot via UEFI, the bootloader/kexec can
always set the secure-boot state on.

> So perhaps use efi_enabled(EFI_BOOT) instead?

I've no objection to that, given it incorporates a test of CONFIG_EFI.

David