From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 204F0C433DF for ; Wed, 8 Jul 2020 14:08:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03B5420720 for ; Wed, 8 Jul 2020 14:08:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729482AbgGHOH7 (ORCPT ); Wed, 8 Jul 2020 10:07:59 -0400 Received: from mga02.intel.com ([134.134.136.20]:29263 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728148AbgGHOH7 (ORCPT ); Wed, 8 Jul 2020 10:07:59 -0400 IronPort-SDR: vmTDpWZTKkevxrFqlxBi71OawkZWrQcoY5aa5uOdxWccq+6D4Aln8z6653tDb3O7L6R5tNplUh wGfeIyUoSg7Q== X-IronPort-AV: E=McAfee;i="6000,8403,9675"; a="136027091" X-IronPort-AV: E=Sophos;i="5.75,327,1589266800"; d="scan'208";a="136027091" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jul 2020 07:07:58 -0700 IronPort-SDR: /qeY/VuRKlFc+ez7PhFZz0m79tIeqkwYka6UISwhCTNiQf7Gl2A6cfELVsSKoz0gWSZGV6g9YT eOPFAZnugEmA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,327,1589266800"; d="scan'208";a="283807420" Received: from jschirra-mobl.ger.corp.intel.com (HELO localhost) ([10.249.47.201]) by orsmga006.jf.intel.com with ESMTP; 08 Jul 2020 07:07:55 -0700 Date: Wed, 8 Jul 2020 17:07:53 +0300 From: Jarkko Sakkinen To: Stefan Berger Cc: Stefan Berger , 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 Message-ID: <20200708140753.GC538949@linux.intel.com> References: <20200706181953.3592084-1-stefanb@linux.vnet.ibm.com> <20200706181953.3592084-3-stefanb@linux.vnet.ibm.com> <20200706230914.GC20770@linux.intel.com> <78ec872f-89b3-6464-6ede-bd0a46fe5c4c@linux.ibm.com> <20200707022416.GC112019@linux.intel.com> <20200707040325.GB143804@linux.intel.com> <85c27199-df55-eecc-855c-dedcea64f89e@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <85c27199-df55-eecc-855c-dedcea64f89e@linux.ibm.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org 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 > > > > > > > > > > > > > > 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 > > > > > > 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 [*] https://www.qemu.org/docs/master/specs/tpm.html /Jarkko