linux-kernel - Re: [PATCH V3 1/3] drivers/char/tpm: Add new device driver to support IBM vTPM

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Message-ID: <20120905154644.GA14925@linux.vnet.ibm.com>
Date:	Wed, 5 Sep 2012 10:46:44 -0500
From:	Kent Yoder <key@...ux.vnet.ibm.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Ashley Lai <adlai@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	tpmdd-devel@...ts.sourceforge.net, linuxppc-dev@...ts.ozlabs.org,
	rcj@...ux.vnet.ibm.com, adlai@...ibm.com
Subject: Re: [PATCH V3 1/3] drivers/char/tpm: Add new device driver to
 support IBM vTPM

On Wed, Sep 05, 2012 at 01:40:07PM +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2012-08-22 at 16:42 -0500, Kent Yoder wrote:
> > On Wed, Aug 22, 2012 at 04:17:43PM -0500, Ashley Lai wrote:
> > > This patch adds a new device driver to support IBM virtual TPM
> > > (vTPM) for PPC64.  IBM vTPM is supported through the adjunct
> > > partition with firmware release 740 or higher.  With vTPM
> > > support, each lpar is able to have its own vTPM without the
> > > physical TPM hardware.
> > > 
> > > This driver provides TPM functionalities by communicating with
> > > the vTPM adjunct partition through Hypervisor calls (Hcalls)
> > > and Command/Response Queue (CRQ) commands.
> > 
> >  Thanks Ashley, I'll include this in my next pull request to James.
> 
> Oh ? I was about to put it in the powerpc tree ... But yeah, I notice
> there's a change to tpm.h so it probably should be at least acked by the
> TPM folks. As for the subsequent patches, they are powerpc specific so I
> can add them, I don't think there's a strict dependency, is there ?

  James did accept my pull request, so these are already in
security-next...

Kent

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