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Date:   Wed, 13 Feb 2019 15:22:39 +0100
From:   Ard Biesheuvel <>
To:     Bartosz Szczepanek <>
Cc:     Jarkko Sakkinen <>,
        linux-efi <>,
        linux-integrity <>,
        Linux Kernel Mailing List <>,,
        ThiƩbaud Weksteen <>,
        Ingo Molnar <>,
        Hans de Goede <>,
        Leif Lindholm <>,
        Marcin Wojtas <>
Subject: Re: [PATCH 4/5] efi/libstub/tpm: Retrieve TPM event log in 2.0 format

On Wed, 13 Feb 2019 at 15:21, Bartosz Szczepanek <> wrote:
> On Wed, Feb 13, 2019 at 12:26 PM Jarkko Sakkinen
> <> wrote:
> > Collides with Matthew's changes. I want to land those change first
> > because they are almost production ready.
> >
> > Maybe you should consider reviewing those changes to make sure that
> > they make sense to you so that you can build these on top of after
> > these have landed.
> Yeah, I think so. Actually, I wasn't aware of Matthew's efforts, as it
> didn't appear on linux-efi mailing list. (On bad, I haven't checked
> linux-integrity.)
> At this point, I think it makes more sense to limit this patchset to
> 5/5 patch, which makes TPM event log initialized on ARM platforms.
> Patches 1-4 introduce nothing more than Matthew already did, maybe
> except putting calc_tpm2_event_size to a library instead of making it
> inline. This function has already grown a bit so it may be a better
> approach, but that's nothing to affect functionality.
> I'll pull Matthew changes to my tree to confirm operation on ARM
> platforms, if that works fine the only thing to merge would be 5/5 +
> optionally the library change, if we reach agreement on that.

Sounds good, and yes, it would be good to cc patches that affect the
EFI subsystem to linux-efi as well.

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