linux-kernel - Re: [PATCH v6 1/2] acpi: Extend TPM2 ACPI table with missing log fields

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Message-ID: <20200625212646.GD20341@linux.intel.com>
Date:   Fri, 26 Jun 2020 00:26:46 +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>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Jiandi An <anjiandi@...eaurora.org>
Subject: Re: [PATCH v6 1/2] acpi: Extend TPM2 ACPI table with missing log
 fields

On Thu, Jun 25, 2020 at 08:42:21AM -0400, Stefan Berger wrote:
> From: Stefan Berger <stefanb@...ux.ibm.com>
> 
> Recent extensions of the TPM2 ACPI table added 3 more fields
> including 12 bytes of start method specific parameters and Log Area
> Minimum Length (u32) and Log Area Start Address (u64). So, we define
> a new structure acpi_tpm2_phy that holds these optional new fields.
> The new fields allow non-UEFI systems to access the TPM2's log.
> 
> The specification that has the new fields is the following:
>   TCG ACPI Specification
>   Family "1.2" and "2.0"
>   Version 1.2, Revision 8
> 
> https://trustedcomputinggroup.org/wp-content/uploads/TCG_ACPIGeneralSpecification_v1.20_r8.pdf
> 
> Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>
> Cc: linux-acpi@...r.kernel.org
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Cc: Jiandi An <anjiandi@...eaurora.org>

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

/Jarkko