From: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Josh Zimmerman <joshz-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Peter Huewe <peterhuewe-Mmb7MZpHnFY@public.gmane.org>,
Marcel Selhorst <tpmdd-yWjUBOtONefk1uMJSBkQmQ@public.gmane.org>,
Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org
Subject: Re: [PATCH v6 1/2] tpm: Issue a TPM2_Shutdown for TPM2 devices.
Date: Sun, 18 Jun 2017 23:53:55 +0200 [thread overview]
Message-ID: <1497822835.2552.2.camel@linux.intel.com> (raw)
In-Reply-To: <20170616172531.28464-1-joshz-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
On Fri, 2017-06-16 at 10:25 -0700, Josh Zimmerman wrote:
> If a TPM2 loses power without a TPM2_Shutdown command being issued (a
> "disorderly reboot"), it may lose some state that has yet to be
> persisted to NVRam, and will increment the DA counter. After the DA
> counter gets sufficiently large, the TPM will lock the user out.
>
> NOTE: This only changes behavior on TPM2 devices. Since TPM1 uses
sysfs,
> and sysfs relies on implicit locking on chip->ops, it is not safe to
> allow this code to run in TPM1, or to add sysfs support to TPM2,
until
> that locking is made explicit.
>
> Signed-off-by: Josh Zimmerman <joshz@google.com>
> Cc: stable@vger.kernel.org
>
> ----
> v2:
> - Properly split changes between this and another commit
> - Use proper locking primitive.
> - Fix commenting style
> v3:
> - Re-fix commenting style
> v4:
> - Update description and tags (Reviewed-by, Cc).
> v5:
> - Update documentation.
> v6:
> - Call device and/or bus shutdown from tpm_shutdown.
The change log should be after the dashes *below* right before diff
stat. Since this is 1/2 I should be abe to assume that I could apply on
this and not apply 2/2.
Why this patch set does not have a cover letter?
Anyway, I applied these to my master and if they don't break anything
I'm including them to my 4.13 pull request. I left the commit messages
to the form that they turn out if I just git am -3 the mbox files.
Next time, do a git am sanity check if you have changelogs in your
patches.
/Jarkko
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
tpmdd-devel mailing list
tpmdd-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/tpmdd-devel
next prev parent reply other threads:[~2017-06-18 21:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-16 17:25 [PATCH v6 1/2] tpm: Issue a TPM2_Shutdown for TPM2 devices Josh Zimmerman via tpmdd-devel
[not found] ` <20170616172531.28464-1-joshz-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2017-06-16 17:25 ` [PATCH v6 2/2] Add "shutdown" to "struct class" Josh Zimmerman via tpmdd-devel
2017-06-18 21:53 ` Jarkko Sakkinen [this message]
2017-06-18 23:21 ` [PATCH v6 1/2] tpm: Issue a TPM2_Shutdown for TPM2 devices Jarkko Sakkinen
[not found] ` <1497828091.2552.6.camel-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-06-18 23:26 ` Jarkko Sakkinen
[not found] ` <1497828407.2552.8.camel-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-06-19 15:51 ` Jason Gunthorpe
[not found] ` <20170619155122.GA10188-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-06-19 22:12 ` Jarkko Sakkinen
[not found] ` <20170619221220.kfk5dldducxvou5b-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-06-19 22:21 ` Jarkko Sakkinen
[not found] ` <20170619222122.55m5goanayw3gkeo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-06-19 22:38 ` Jarkko Sakkinen
[not found] ` <20170619223840.a66extf3r5ylmpnb-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-06-19 22:44 ` Josh Zimmerman via tpmdd-devel
[not found] ` <CAHSjozDy0dsGPkyXzVsDabjtbM4-QkzoE2fH1gDONXETyA19RA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-06-20 15:05 ` Jarkko Sakkinen
[not found] ` <20170620150541.x5b7vkxyb3w55gjq-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-06-21 7:37 ` Jarkko Sakkinen
2017-06-20 8:44 ` Jarkko Sakkinen
-- strict thread matches above, loose matches on Subject: below --
2017-06-02 21:55 Josh Zimmerman
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=1497822835.2552.2.camel@linux.intel.com \
--to=jarkko.sakkinen-vuqaysv1563yd54fqh9/ca@public.gmane.org \
--cc=jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org \
--cc=jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org \
--cc=joshz-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=peterhuewe-Mmb7MZpHnFY@public.gmane.org \
--cc=tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
--cc=tpmdd-yWjUBOtONefk1uMJSBkQmQ@public.gmane.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).