Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality prepended to command

From	Stefan Berger <stefanb@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality prepended to command
Date	2017-05-04 13:20 +0200
Message-ID	<tDmXD-2GO-1@gated-at.bofh.it> (permalink)
References	<tBdON-7J4-7@gated-at.bofh.it> <tBdON-7J4-5@gated-at.bofh.it> <tDb69-381-7@gated-at.bofh.it> <tDcbT-3QP-7@gated-at.bofh.it> <tDlfc-1wD-37@gated-at.bofh.it>
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On 05/04/2017 05:17 AM, Jarkko Sakkinen wrote:
> On Wed, May 03, 2017 at 07:40:48PM -0400, Stefan Berger wrote:
>> On 05/03/2017 06:37 PM, Jarkko Sakkinen wrote:
>>> On Fri, Apr 28, 2017 at 09:02:18AM -0400, Stefan Berger wrote:
>>>> Add an ioctl to request that the locality be prepended to every TPM
>>>> command.
>>> Don't really understand this change. Why locality is prenpended?
>> Commands can be executed under locality 0-3 and for some commands it is
>> important to know which locality a user may have chosen. How else should we
>> convey that locality to the TPM emulator ?
> Why this is not in the commit message?
>
> More scalable way to do this would be to have a set of vtpm proxy
> commands. There could be a command for requesting and releasing
> locality. That would be more clean.

I would think that if someone wanted to use locality it's the client 
using /dev/tpm(rm)0 calling an ioctl or so and the vtpm proxy then 
merely passing that locality to the backend (TPM emulator). I suppose 
the intention is to support something like that following the addition 
of the new functions request_locality and release_locality?

Thread

[PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality prepended to command Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-04-28 15:10 +0200
  Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command kbuild test robot <lkp@intel.com> - 2017-04-29 09:10 +0200
  Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-05-04 00:40 +0200
    Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 01:50 +0200
      Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-05-04 11:30 +0200
        Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 13:20 +0200
          Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-05-04 20:50 +0200
            Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 22:10 +0200
              Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-05-09 01:50 +0200
                Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-09 17:50 +0200
                Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-05-10 15:00 +0200
                Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-10 15:30 +0200
                Re: [PATCH v2 3/3] tpm: vtpm_proxy: Add ioctl to request locality  prepended to command Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-05-10 20:40 +0200

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