linux-kernel - Re: [PATCH 5/7] efi: Get the secure boot status [ver #3]

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Message-ID: <CAKv+Gu87-vUp6OrdVuUg0BxvSOHNPOFcsCFF9dzpohOQsY8Jtw@mail.gmail.com>
Date:   Fri, 25 Nov 2016 12:52:58 +0000
From:   Ard Biesheuvel <ard.biesheuvel@...aro.org>
To:     David Howells <dhowells@...hat.com>
Cc:     James Bottomley <James.Bottomley@...senpartnership.com>,
        "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>,
        Lukas Wunner <lukas@...ner.de>, keyrings@...r.kernel.org,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 5/7] efi: Get the secure boot status [ver #3]

On 25 November 2016 at 12:51, David Howells <dhowells@...hat.com> wrote:
> Ard Biesheuvel <ard.biesheuvel@...aro.org> wrote:
>
>> There is a 'revision' field in the header ('hdr') of the EFI system
>> table, so something like
>
> Is this the same as the fw_revision in the system table?
>
>         #define EFI_2_60_SYSTEM_TABLE_REVISION ((2<<16) | (60))
>         #define EFI_2_50_SYSTEM_TABLE_REVISION ((2<<16) | (50))
>         #define EFI_2_40_SYSTEM_TABLE_REVISION ((2<<16) | (40))
>         ...
>

Yes. And in fact, that means my example is incorrect (60 not 6 in the
minor field)