linux-kernel - Re: [PATCH v9 2/2] tpm: Add support for event log pointer found in TPM2 ACPI table

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Date:   Tue, 7 Jul 2020 02:09:14 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Stefan Berger <stefanb@...ux.vnet.ibm.com>
Cc:     linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-security-module@...r.kernel.org,
        Stefan Berger <stefanb@...ux.ibm.com>
Subject: Re: [PATCH v9 2/2] tpm: Add support for event log pointer found in
 TPM2 ACPI table

On Mon, Jul 06, 2020 at 02:19:53PM -0400, Stefan Berger wrote:
> From: Stefan Berger <stefanb@...ux.ibm.com>
> 
> In case a TPM2 is attached, search for a TPM2 ACPI table when trying
> to get the event log from ACPI. If one is found, use it to get the
> start and length of the log area. This allows non-UEFI systems, such
> as SeaBIOS, to pass an event log when using a TPM2.
> 
> Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>

Do you think that QEMU with TPM 1.2 emulator turned on would be a viable
way to test this?

I'm anyway more worried about breaking existing TPM 1.2 functionality
and that requires only QEMU without extras.

/Jarkko