From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Stefan Berger <stefanb@linux.vnet.ibm.com>
Cc: tpmdd-devel@lists.sourceforge.net,
jgunthorpe@obsidianresearch.com,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-api@vger.kernel.org
Subject: Re: [PATCH v8 08/10] tpm: Proxy driver for supporting multiple emulated TPMs
Date: Mon, 14 Mar 2016 18:26:02 +0200 [thread overview]
Message-ID: <20160314162602.GA24203@intel.com> (raw)
In-Reply-To: <1457909680-14085-9-git-send-email-stefanb@linux.vnet.ibm.com>
On Sun, Mar 13, 2016 at 06:54:38PM -0400, Stefan Berger wrote:
> This patch implements a proxy driver for supporting multiple emulated TPMs
> in a system.
>
> The driver implements a device /dev/vtpmx that is used to created
> a client device pair /dev/tpmX (e.g., /dev/tpm10) and a server side that
> is accessed using a file descriptor returned by an ioctl.
> The device /dev/tpmX is the usual TPM device created by the core TPM
> driver. Applications or kernel subsystems can send TPM commands to it
> and the corresponding server-side file descriptor receives these
> commands and delivers them to an emulated TPM.
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
My testing procedure was:
* Wine running TPM 2.0 simulator on the host side. [1]
* QEMU running an OS image with this patch. [2]
* Wrote a script for proxying the simulator: tpm2-simulator-vtpm. [3]
* Run some smoke tests: python -m unittest -v tpm2_smoke. [3]
[1] http://research.microsoft.com/en-us/downloads/35116857-e544-4003-8e7b-584182dc6833/
[2] git://git.infradead.org/users/jjs/buildroot-tpmdd.git
[3] git://git.infradead.org/users/jjs/tpm2-scripts.git
/Jarkko
> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
> CC: linux-kernel@vger.kernel.org
> CC: linux-doc@vger.kernel.org
> CC: linux-api@vger.kernel.org
> ---
> drivers/char/tpm/Kconfig | 10 +
> drivers/char/tpm/Makefile | 1 +
> drivers/char/tpm/tpm_vtpm_proxy.c | 572 ++++++++++++++++++++++++++++++++++++++
> include/uapi/linux/Kbuild | 1 +
> include/uapi/linux/vtpm_proxy.h | 42 +++
> 5 files changed, 626 insertions(+)
> create mode 100644 drivers/char/tpm/tpm_vtpm_proxy.c
> create mode 100644 include/uapi/linux/vtpm_proxy.h
/Jarkko
next prev parent reply other threads:[~2016-03-14 16:26 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-13 22:54 [PATCH v8 00/10] Multi-instance vTPM proxy driver Stefan Berger
2016-03-13 22:54 ` [PATCH v8 01/10] tpm: Get rid of chip->pdev Stefan Berger
2016-03-13 22:54 ` [PATCH v8 02/10] tpm: Get rid of devname Stefan Berger
2016-03-13 22:54 ` [PATCH v8 03/10] tpm: Provide strong locking for device removal Stefan Berger
2016-03-13 22:54 ` [PATCH v8 04/10] tpm: Get rid of module locking Stefan Berger
2016-03-13 22:54 ` [PATCH v8 05/10] tpm: Split out the devm stuff from tpmm_chip_alloc Stefan Berger
2016-03-13 22:54 ` [PATCH v8 06/10] tpm: Replace device number bitmap with IDR Stefan Berger
2016-03-15 5:58 ` Jarkko Sakkinen
2016-03-13 22:54 ` [PATCH v8 07/10] tpm: Introduce TPM_CHIP_FLAG_VIRTUAL Stefan Berger
2016-03-13 22:54 ` [PATCH v8 08/10] tpm: Proxy driver for supporting multiple emulated TPMs Stefan Berger
2016-03-14 16:26 ` Jarkko Sakkinen [this message]
2016-03-16 12:09 ` Jarkko Sakkinen
2016-03-16 13:49 ` Stefan Berger
2016-03-16 17:49 ` Jason Gunthorpe
2016-03-16 20:37 ` Jarkko Sakkinen
2016-03-16 20:42 ` Jarkko Sakkinen
2016-03-17 17:45 ` Stefan Berger
2016-03-18 8:52 ` Jarkko Sakkinen
2016-03-18 13:06 ` Jarkko Sakkinen
2016-03-13 22:54 ` [PATCH v8 09/10] tpm: Initialize TPM and get durations and timeouts Stefan Berger
2016-03-22 6:34 ` [v8,09/10] " Jarkko Sakkinen
2016-03-22 10:54 ` Stefan Berger
2016-03-29 15:31 ` [v8,09/10] tpm: Initialize TPM and get durations and timeoutsg Jarkko Sakkinen
2016-03-29 15:53 ` Stefan Berger
2016-03-13 22:54 ` [PATCH v8 10/10] tpm: Add documentation for the tpm_vtpm device driver Stefan Berger
2016-03-29 16:24 ` [PATCH v8 00/10] Multi-instance vTPM proxy driver Jarkko Sakkinen
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