Re: [PATCH v3] acpi: Extend TPM2 ACPI table with missing log fields

Jarkko Sakkinen
2020-04-02T19:22:04Z

On Wed, Apr 01, 2020 at 11:05:36AM +0200, Rafael J. Wysocki wrote:
> On Wed, Apr 1, 2020 at 10:37 AM Jarkko Sakkinen
> <jarkko.sakkinen@linux.intel.com> wrote:
> >
> > On Tue, Mar 31, 2020 at 05:49:49PM -0400, Stefan Berger wrote:
> > > From: Stefan Berger <stefanb@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@linux.ibm.com>
> > > Cc: linux-acpi@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?
>
> Yes, please.
>
> Thanks!

Great, thanks Rafael.

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

Do you mind if I add your ack to the commit?

/Jarkko