All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Mimi Zohar <zohar@linux.ibm.com>
Cc: linux-integrity@vger.kernel.org
Subject: Re: TPM legacy
Date: Sun, 2 Dec 2018 15:08:47 -0800	[thread overview]
Message-ID: <20181202230847.GB6718@linux.intel.com> (raw)
In-Reply-To: <1543764226.4216.205.camel@linux.ibm.com>

On Sun, Dec 02, 2018 at 10:23:46AM -0500, Mimi Zohar wrote:
> On Fri, 2018-11-30 at 15:35 -0800, Jarkko Sakkinen wrote:
> > Hi
> > 
> > Some things that came up at LSS.
> > 
> > First, would it be time to drop 1.1b bits? What advantages this would
> > bring? AFAIK Peter is a strong supporter of this.
> > 
> > In the hall way discussions, I talked with Tomas Winkler that it would
> > make sense to add CONFIG_TCG_TPM1 flag to completely leave out all TPM
> > 1.x bits from the kernel.
> > 
> > TPM 1.x stuff is not exactly legacy but especially on IoT does not make
> > sense to carry that code with.
> 
> New systems might be shipping with only TPM 2.0, but it still needs to
> be supported for existing systems, probably for quite a while.  Having
> the option to build the kernel with TPM 1.2, TPM 2.0 or both, is
> acceptable.

I guess it would be sufficient to just have an option to compile TPM 1.x
out for starters as the real use case is devices with fTPM. Hard to see
much benefit on supporting compiling TPM 2.0 support out. Obviously,
TCG_TPM1 would be by default off.

/Jarkko

      parent reply	other threads:[~2018-12-02 23:08 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-30 23:35 TPM legacy Jarkko Sakkinen
2018-12-02 15:23 ` Mimi Zohar
2018-12-02 18:29   ` James Bottomley
2018-12-02 23:13     ` Jarkko Sakkinen
2018-12-03 15:01       ` Aw: " Peter Huewe
2018-12-03 17:29         ` Jason Gunthorpe
2018-12-03 17:55           ` Jarkko Sakkinen
2018-12-03 17:55             ` Jarkko Sakkinen
2018-12-03 18:00               ` Peter Huewe
2018-12-03 18:09                 ` Jason Gunthorpe
2018-12-03 18:15                   ` Jarkko Sakkinen
2018-12-03 18:15                     ` Jarkko Sakkinen
2018-12-03 17:30         ` Jarkko Sakkinen
2018-12-02 23:08   ` Jarkko Sakkinen [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20181202230847.GB6718@linux.intel.com \
    --to=jarkko.sakkinen@linux.intel.com \
    --cc=linux-integrity@vger.kernel.org \
    --cc=zohar@linux.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.