[PATCH v3] acpi: Extend TPM2 ACPI table with missing log fields
Rafael J. Wysocki
rafael at kernel.org
Wed Apr 1 09:05:36 UTC 2020
On Wed, Apr 1, 2020 at 10:37 AM Jarkko Sakkinen
<jarkko.sakkinen at linux.intel.com> wrote:
> On Tue, Mar 31, 2020 at 05:49:49PM -0400, Stefan Berger wrote:
> > From: Stefan Berger <stefanb at linux.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 extend
> > the existing structure with these fields to 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
> > Adapt all existing table size calculations to use
> > offsetof(struct acpi_table_tpm2, start_method_specific)
> > [where start_method_specific is a newly added field]
> > rather than sizeof(struct acpi_table_tpm2) so that the addition
> > of the new fields does not affect current systems that may not
> > have them.
> > Signed-off-by: Stefan Berger <stefanb at linux.ibm.com>
> > Cc: linux-acpi at vger.kernel.org
> I think I'm cool with this but needs an ack from ACPI maintainer.
> Rafael, given that this not an intrusive change in any possible means,
> can I pick this patch and put it to my next pull request?
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