From: Stefan Berger <stefanb@linux.ibm.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>,
linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH v9 2/2] tpm: Add support for event log pointer found in TPM2 ACPI table
Date: Wed, 8 Jul 2020 10:17:17 -0400 [thread overview]
Message-ID: <e42cb59d-6a3d-12be-bb51-88aa8c5dba23@linux.ibm.com> (raw)
In-Reply-To: <20200708140753.GC538949@linux.intel.com>
On 7/8/20 10:07 AM, Jarkko Sakkinen wrote:
> On Tue, Jul 07, 2020 at 12:09:11AM -0400, Stefan Berger wrote:
>> On 7/7/20 12:03 AM, Jarkko Sakkinen wrote:
>>> On Mon, Jul 06, 2020 at 11:08:12PM -0400, Stefan Berger wrote:
>>>> On 7/6/20 10:24 PM, Jarkko Sakkinen wrote:
>>>>> On Mon, Jul 06, 2020 at 07:55:26PM -0400, Stefan Berger wrote:
>>>>>> On 7/6/20 7:09 PM, Jarkko Sakkinen wrote:
>>>>>>> On Mon, Jul 06, 2020 at 02:19:53PM -0400, Stefan Berger wrote:
>>>>>>>> From: Stefan Berger <stefanb@linux.ibm.com>
>>>>>>>>
>>>>>>>> In case a TPM2 is attached, search for a TPM2 ACPI table when trying
>>>>>>>> to get the event log from ACPI. If one is found, use it to get the
>>>>>>>> start and length of the log area. This allows non-UEFI systems, such
>>>>>>>> as SeaBIOS, to pass an event log when using a TPM2.
>>>>>>>>
>>>>>>>> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
>>>>>>> Do you think that QEMU with TPM 1.2 emulator turned on would be a viable
>>>>>>> way to test this?
>>>>>> Yes.
>>>>> Is the emulator bundled with QEMU or does it have to be installed
>>>>> separately?
>>>> It has to be installed separately. On Fedora 31 it would just be a `sudo dnf
>>>> -y install swtpm-tools` and you should be good to go with libvirt /
>>>> virt-manager.
>>> Is there some packaging for Debian/Ubuntu available?
>>
>> So far may not be available yet. I had *experimented* with a PPA once:
>> https://launchpad.net/~stefanberger/+archive/ubuntu/swtpm-focal
> There is a snap available:
>
> name: swtpm-mvo
> summary: Libtpms-based TPM emulator
> publisher: Michael Vogt (mvo)
> store-url: https://snapcraft.io/swtpm-mvo
> license: unset
> description: |
> Libtpms-based TPM emulator with socket, character device, and Linux
> CUSE interface.
> commands:
> - swtpm-mvo.swtpm
> services:
> swtpm-mvo.swtpm-sock: simple, enabled, active
> snap-id: HNl1TwHRBk3OtXQ8OriRB93FDZ6vman7
> tracking: latest/edge
> refresh-date: today at 02:05 EEST
> channels:
> latest/stable: –
> latest/candidate: –
> latest/beta: 0.1.0 2019-07-26 (11) 3MB -
> latest/edge: 0.1.0 2020-07-08 (75) 3MB -
> installed: 0.1.0 (74) 3MB -
>
> This is the version information:
>
> ❯ swtpm-mvo.swtpm --version
> TPM emulator version 0.4.0, Copyright (c) 2014 IBM Corp.
>
> However, if I try to run the first example from [*], I get:
>
> ❯ swtpm-mvo.swtpm socket --tpmstate dir=/tmp/mytpm1 \
> --ctrl type=unixio,path=/tmp/mytpm1/swtpm-sock \
> --log level=20
> swtpm: Could not open UnixIO socket: No such file or directory
Did you create the directory '/tmp/mytpm1' ?
> [*] https://www.qemu.org/docs/master/specs/tpm.html
>
> /Jarkko
next prev parent reply other threads:[~2020-07-08 14:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 18:19 [PATCH v9 0/2] tpm2: Make TPM2 logs accessible for non-UEFI firmware Stefan Berger
2020-07-06 18:19 ` [PATCH v9 1/2] acpi: Extend TPM2 ACPI table with missing log fields Stefan Berger
2020-07-06 22:02 ` Jerry Snitselaar
2020-07-06 18:19 ` [PATCH v9 2/2] tpm: Add support for event log pointer found in TPM2 ACPI table Stefan Berger
2020-07-06 22:04 ` Jerry Snitselaar
2020-07-06 23:09 ` Jarkko Sakkinen
2020-07-06 23:12 ` Jarkko Sakkinen
2020-07-06 23:55 ` Stefan Berger
2020-07-07 2:24 ` Jarkko Sakkinen
2020-07-07 3:08 ` Stefan Berger
2020-07-07 4:03 ` Jarkko Sakkinen
2020-07-07 4:09 ` Stefan Berger
2020-07-08 14:07 ` Jarkko Sakkinen
2020-07-08 14:17 ` Stefan Berger [this message]
2020-07-14 11:20 ` Jarkko Sakkinen
2020-07-14 12:09 ` Stefan Berger
2020-07-16 17:26 ` Jarkko Sakkinen
2020-07-06 23:57 ` Jerry Snitselaar
2020-07-07 2:24 ` Jarkko Sakkinen
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=e42cb59d-6a3d-12be-bb51-88aa8c5dba23@linux.ibm.com \
--to=stefanb@linux.ibm.com \
--cc=jarkko.sakkinen@linux.intel.com \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=stefanb@linux.vnet.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 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).