linux-kernel - Re: [tpmdd-devel] [PATCH v11 0/4] Multi-instance vTPM proxy driver

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Message-ID: <5720E87D.909@linux.vnet.ibm.com>
Date:	Wed, 27 Apr 2016 12:27:41 -0400
From:	Stefan Berger <stefanb@...ux.vnet.ibm.com>
To:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:	linux-security-module@...r.kernel.org,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Subject: Re: [tpmdd-devel] [PATCH v11 0/4] Multi-instance vTPM proxy driver

On 04/27/2016 08:56 AM, Jarkko Sakkinen wrote:
> On Tue, Apr 26, 2016 at 07:30:26AM -0400, Stefan Berger wrote:
>> On 04/26/2016 05:28 AM, Jarkko Sakkinen wrote:
>>> On Fri, Apr 22, 2016 at 07:54:27PM +0300, Jarkko Sakkinen wrote:
>>>> On Mon, Apr 18, 2016 at 01:26:12PM -0400, Stefan Berger wrote:
>>>>> The following series of patches implements a multi-instance vTPM
>>>>> proxy driver that can dynamically create TPM 'server' and client device
>>>>> pairs.
>>>>>
>>>>> Using an ioctl on the provided /dev/vtpmx, a client-side vTPM device
>>>>> and a server side file descriptor is created. The file descriptor must
>>>>> be passed to a TPM emulator. The device driver will initialize the
>>>>> emulated TPM using TPM 1.2 or TPM 2 startup commands and it will read
>>>>> the command durations from the device in case of a TPM 1.2. The choice
>>>>> of emulated TPM device (1.2 or 2) must be provided with a flag in
>>>>> the ioctl.
>>>>>
>>>>> The patches are based on the tip of a recent checkout of Jarkko's tree
>>>>> (master branch).
>>>> I've applied this series to my master branch. These patches have been
>>>> baking long enough in my opinion that they could be merged to next and
>>>> therefore find their way into Linux 4.7
>>>>
>>>> Stefan, I would still require your Tested-by for the first patch before
>>>> merging because it is not as mature as other patches are.
>>> Now I have augmented Tested-by's to relevant patches and added my
>>> Signed-off-by's. I plan to merge this to the next branch tomorrow.
>> Please don't forget Jason's patch for tpm_tis.c that fixes the device used
>> in the devm_request_irq/devm_free_irq calls. The rmmod of tpm_tis only work
>> correctly in interrupt mode when that patch is applied.
> It has been merged already earlier to the next branch. I've now merged
> these patches to the next branch.

Please check the devm_request_irq() call whether it still uses the wrong 
&chip->dev or rather chip->dev.parent.

    Stefan


>
>>     Stefan
> /Jarkko
>