linux-kernel - Re: [PATCH -next] efi/tpm: fix a compilation warning

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Date:   Thu, 13 Jun 2019 15:23:42 +0200
From:   Bartosz Szczepanek <bsz@...ihalf.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Qian Cai <cai@....pw>, Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Matthew Garrett <mjg59@...gle.com>,
        linux-efi <linux-efi@...r.kernel.org>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] efi/tpm: fix a compilation warning

On Thu, Jun 13, 2019 at 2:40 PM Arnd Bergmann <arnd@...db.de> wrote:
>
> Would it be correct to change that to 'false' then (or completely remove
> the additional remap, given that the other two callers pass false
> already) and pass final_tbl?

The problem is that we don't know the final_tbl size before running
tpm2_calc_event_log_size on it, so we cannot map it's entire content.
Only table header is mapped at the beginning.

After size of entire table is calculated it can be mapped as a whole
and no additional remap is needed, hence the calls with do_mapping =
false.