From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stefan Berger" Subject: Re: [RFC PATCH 0/4] Multi-instance vTPM driver Date: Fri, 15 Jan 2016 08:02:52 -0500 Message-ID: <201601151302.u0FD2wAk002441@d03av05.boulder.ibm.com> References: <1452787318-29610-1-git-send-email-stefanb@us.ibm.com> <20160115101146.GA11987@intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2896010122691524692==" Return-path: In-Reply-To: <20160115101146.GA11987-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: dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Stefan Berger , tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org List-Id: tpmdd-devel@lists.sourceforge.net --===============2896010122691524692== Content-Type: multipart/alternative; boundary="=_alternative 0047AEE285257F3B_=" --=_alternative 0047AEE285257F3B_= Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="US-ASCII" Jarkko Sakkinen wrote on 01/15/2016=20 05:11:46 AM: >=20 > On Thu, Jan 14, 2016 at 11:01:54AM -0500, Stefan Berger wrote: > > From: Stefan Berger > >=20 > > The following series of patches implements a multi-instance vTPM=20 driver > > that can dynamically create TPM 'server' and client device pairs. > >=20 > > Using ioctl's on the provided /dev/vtpmx, a server and a client > > side vTPM device can be created. The server side offers a /dev/vtpms%d > > device and a TPM emulator must be started on it to listen for TPM=20 commands > > that are written to /dev/vtpmc%d, which is created by the core TPM=20 driver. > >=20 > > The primary goal of this series of patches is enabling vTPM for=20 containers > > and hooking them up to a (future) namespaced IMA. However, the driver=20 can > > also be used for simulating a hardware TPM on the host. > >=20 > > The last patch provides a test program for controlling device pairs. >=20 > I like the idea. Looking into this in more detail after the next pull > request. Thanks! Thank you. I actually found some issues in the code yesterday, so I=20 eventually will need to repost. I may put the latest on a public git repo in case someone wants to test. Stefan --=_alternative 0047AEE285257F3B_= Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="US-ASCII" Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> wrote on 01/15/2016 05:11:46 AM:

>
> On Thu, Jan 14, 2016 = at 11:01:54AM -0500, Stefan Berger wrote:
> > From: Stefan Berger = <stefanb-0rqouEpbLJlpnrxNGchxj0EOCMrvLtNR@public.gmane.org>
> >
> > The followin= g series of patches implements a multi-instance vTPM driver
> > that can dynamically create TPM 'server' and client dev= ice pairs.
> >
> > Using ioctl's on the provided /dev/vt= pmx, a server and a client
> > side vTPM device can be created. Th= e server side offers a /dev/vtpms%d
> > device and a TPM emulator = must be started on it to listen for TPM commands
> > that are written to /dev/vtpmc%d, which is create= d by the core TPM driver.
> >
> > The primary goal of this series of p= atches is enabling vTPM for containers
> > and hooking them up to a (future) namespaced IMA. H= owever, the driver can
> > also be used for simulating a hardware TPM on the h= ost.
> >
> > The last patch provides a test program for = controlling device pairs.
>
> I like the idea. Looking into this in more detail a= fter the next pull
> request. Thanks!

Thank you. I actually found some issues in the code yesterday, so I eventually will need to repost.
I may put the latest on a public git repo in case someone wants to test.

   S= tefan

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