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From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Alexander.Steffen@infineon.com
Cc: msuchanek@suse.de, linux-security-module@vger.kernel.org,
	tpmdd-devel@lists.sourceforge.net
Subject: Re: [tpmdd-devel] [PATCH RESEND 3/3] tpm-chip: Export TPM device to user space even when startup failed
Date: Sat, 2 Sep 2017 13:20:11 +0300	[thread overview]
Message-ID: <20170902102011.j77dpzuiabm2tn5l@linux.intel.com> (raw)
In-Reply-To: <d284fb46422f468cb2e5c70d3836be69@MUCSE603.infineon.com>

On Thu, Aug 31, 2017 at 04:18:42PM +0000, Alexander.Steffen@infineon.com wrote:
> > I guess Alexander should be able to propose such subset.
> 
> For scenario #1 you could probably come up with a list of commands
> that are generally useful. But once you are restricted to those five
> commands, you block iterative debugging of the "I see where the
> problem might be, could you try to execute ..." fashion by requiring
> the other person to patch and rebuild their kernel.

If the subset turns out to be wrong, it can be revisited.

> For scenario #2 I see no chance to do that in a generic way. I could
> maybe tell you what the commands in this mode currently look like for
> Infineon TPMs, so that they can be whitelisted, but they might look
> different in the future and they are certainly different for other
> vendor's implementations.

It's easy to check whether a command is vendor specific and allow to
pass those through.

/Jarkko

  reply	other threads:[~2017-09-02 10:20 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-24  8:37 [PATCH RESEND 0/3] Export broken TPMs to user space Alexander Steffen
     [not found] ` <20170824083714.10016-1-Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
2017-08-24  8:37   ` [PATCH RESEND 1/3] tpm-chip: Move idr_replace calls to appropriate places Alexander Steffen
2017-08-25 17:25     ` Jarkko Sakkinen
     [not found]       ` <20170825172546.f4bl2wh7tgbyjx2n-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-08-28 17:18         ` Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w
2017-08-24  8:37   ` [PATCH RESEND 2/3] tpm-chip: Return TPM error codes from auto_startup functions Alexander Steffen
     [not found]     ` <20170824083714.10016-3-Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
2017-08-25 17:06       ` Jarkko Sakkinen
     [not found]         ` <20170825170607.wfnr5y5zres2n42r-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-08-29 12:11           ` Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w
2017-08-24  8:37   ` [PATCH RESEND 3/3] tpm-chip: Export TPM device to user space even when startup failed Alexander Steffen
2017-08-25 17:20     ` Jarkko Sakkinen
     [not found]       ` <20170825172021.lw3ycxqw63ubrcm2-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-08-28 17:15         ` Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w
2017-08-29 12:55           ` Jarkko Sakkinen
2017-08-29 13:17             ` [tpmdd-devel] " Michal Suchánek
     [not found]               ` <20170829151739.315ae581-6hIufAJW0g4CVLCxKZUutA@public.gmane.org>
2017-08-29 13:53                 ` Peter Huewe
2017-08-30 10:26                   ` [tpmdd-devel] " Jarkko Sakkinen
2017-08-30 10:15                 ` Jarkko Sakkinen
2017-08-30 10:20                   ` [tpmdd-devel] " Jarkko Sakkinen
2017-08-30 10:34                     ` Michal Suchánek
2017-08-30 11:07                       ` Jarkko Sakkinen
2017-08-31 16:18                         ` Alexander.Steffen
2017-09-02 10:20                           ` Jarkko Sakkinen [this message]
     [not found]                   ` <20170830101510.rlkh2p3zecfsrhgl-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-08-30 10:41                     ` Peter Huewe
2017-08-30 11:10                       ` [tpmdd-devel] " Jarkko Sakkinen
2017-08-31 16:26                         ` Alexander.Steffen
2017-09-02 10:24                           ` Jarkko Sakkinen

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