From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stefan Berger" Subject: Re: [PATCH v4 00/10] Multi-instance vTPM driver Date: Mon, 29 Feb 2016 15:30:35 -0500 Message-ID: <201602292030.u1TKUiGA021442@d03av03.boulder.ibm.com> References: <1456766996-9300-1-git-send-email-stefanb@linux.vnet.ibm.com> <20160229202401.GA26296@intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5017744730395674191==" Return-path: In-Reply-To: <20160229202401.GA26296-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tpmdd-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Jarkko Sakkinen Cc: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: tpmdd-devel@lists.sourceforge.net --===============5017744730395674191== Content-Type: multipart/alternative; boundary="=_alternative 0070AA7885257F68_=" --=_alternative 0070AA7885257F68_= Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="US-ASCII" Jarkko Sakkinen wrote on 02/29/2016=20 03:24:01 PM: >=20 > On Mon, Feb 29, 2016 at 12:29:46PM -0500, Stefan Berger wrote: > > The following series of patches implements a multi-instance vTPM=20 driver > > that can dynamically create TPM 'server' and client device pairs. > >=20 > > Using an ioctl on the provided /dev/vtpmx, a client-side vTPM device > > and a server side file descriptor is created. The file descriptor must > > be passed to a TPM emulator. The device driver will initialize the > > emulated TPM using TPM 1.2 or TPM 2 startup commands and it will read > > the command durations from the device in case of a TPM 1.2. The choice > > of emulated TPM device (1.2 or 2) must be provided with a flag in > > the ioctl. > >=20 > > The driver is based on James Morris's 'next' branch and uses several > > recently posted patches from Jason and Jarkko. Some of these patches > > needed to rebased on top of this tree. >=20 > It is kind of hard to follow what has happend between patch set > versions if you don't have a changelog in the cover letter. Sorry for that. I followed your suggestion about the flags in the=20 vtpm-driver but moved the ops related to flag modifications under the=20 mutex lock. Stefan --=_alternative 0070AA7885257F68_= Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="US-ASCII" Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> wrote on 02/29/2016 03:24:01 PM:


= >
> On Mon, Feb 29, 2016 at 12:29:46PM -0500, Stefan Berger wrote= :
> > The following series of patches implements a multi-instance = vTPM driver
> > that can dynamically create TPM 'server' and client dev= ice pairs.
> >
> > Using an ioctl on the provided /dev/v= tpmx, a client-side vTPM device
> > and a server side file descriptor is created. The file = descriptor must
> > be passed to a TPM emulator. The device driver will initi= alize the
> > emulated TPM using TPM 1.2 or TPM 2 startup commands and i= t will read
> > the command durations from the device in case of a TPM 1.= 2. The choice
> > of emulated TPM device (1.2 or 2) must be provided with= a flag in
> > the ioctl.
> >
> > The driver is based o= n James Morris's 'next' branch and uses several
> > recently posted patches from Jason and Jarkko. Some of= these patches
> > needed to rebased on top of this tree.
>
>= ; It is kind of hard to follow what has happend between patch set
> v= ersions if you don't have a changelog in the cover letter.
<= br>Sorry for that. I followed your suggestion about the flags in the vtpm-driver but moved the ops related to flag modifications under the mutex lock.

    S= tefan

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