linux-kernel - RE: [PATCH] acpi: update struct acpi_table

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Message-ID: <94F2FBAB4432B54E8AACC7DFDE6C92E37D2F2BE7@ORSMSX112.amr.corp.intel.com>
Date:	Tue, 9 Jun 2015 14:21:12 +0000
From:	"Moore, Robert" <robert.moore@...el.com>
To:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
CC:	"Zheng, Lv" <lv.zheng@...el.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	Len Brown <lenb@...nel.org>,
	"open list:ACPI COMPONENT AR..." <linux-acpi@...r.kernel.org>,
	"open list:ACPI COMPONENT AR..." <devel@...ica.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] acpi: update struct acpi_table_tpm2

ACPICA usually defines any "related" data structures, just for user convenience.

> -----Original Message-----
> From: Jarkko Sakkinen [mailto:jarkko.sakkinen@...ux.intel.com]
> Sent: Tuesday, June 09, 2015 2:18 AM
> To: Moore, Robert
> Cc: Zheng, Lv; Wysocki, Rafael J; Len Brown; open list:ACPI COMPONENT
> AR...; open list:ACPI COMPONENT AR...; open list
> Subject: Re: [PATCH] acpi: update struct acpi_table_tpm2
> 
> On Mon, Jun 08, 2015 at 08:52:02PM +0000, Moore, Robert wrote:
> > It looks like there is a change to the TCPA table also.
> 
> Right. I'll update that too.
> 
> I strongly think that the struct acpi_tpm2_control should not be in
> actbl3.h. It is not defined in the TCG ACPI specification. It is defined
> in
> 
> http://www.trustedcomputinggroup.org/resources/pc_client_platform_tpm_prof
> ile_ptp_specification
> 
> FIFO control structures are internal for to the TPM subsystem and so
> should be CRB control structures (and we have already inside tpm_crb.c).
> 
> The structure ended up there probably because it was combined with the
> TPM2 table in that Microsoft specification.
> 
> /Jarkko
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