From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Andreas Fuchs <andreas.fuchs@sit.fraunhofer.de>
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Ken Goldman <kgoldman@us.ibm.com>,
tpmdd-devel@lists.sourceforge.net,
linux-security-module@vger.kernel.org, greg@enjellic.com,
linux-kernel@vger.kernel.org
Subject: Re: [tpmdd-devel] [PATCH RFC 0/4] RFC: in-kernel resource manager
Date: Wed, 11 Jan 2017 11:03:28 -0700 [thread overview]
Message-ID: <20170111180328.GB22783@obsidianresearch.com> (raw)
In-Reply-To: <ee6c1e48-e21f-d05e-0939-473001224aba@sit.fraunhofer.de>
On Wed, Jan 11, 2017 at 11:00:43AM +0100, Andreas Fuchs wrote:
> could we please get an ioctl, that switches the "mode" of the fd entirely.
> I'd like to see the write()/read() support still intact.
> All my current code uses main-loop based poll on the fd and I don't want
> to be force to start using threads...
We currently do not support poll in the kernel for /dev/tpmX.
ie we do not supply a poll method for 'struct file_operations'.
Even worse, the current implementation blocks returning from write()
until the TPM has completed its work, so it doesn't even make sense to
combine it with poll.
Jason
next prev parent reply other threads:[~2017-01-11 18:04 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-04 16:12 Dr. Greg Wettstein
2017-01-09 23:16 ` Jarkko Sakkinen
2017-01-10 19:29 ` Ken Goldman
2017-01-11 11:36 ` Jarkko Sakkinen
2017-01-10 20:05 ` Jason Gunthorpe
2017-01-11 10:00 ` Andreas Fuchs
2017-01-11 18:03 ` Jason Gunthorpe [this message]
2017-01-11 18:27 ` Stefan Berger
2017-01-11 19:18 ` Jason Gunthorpe
2017-01-11 11:34 ` Jarkko Sakkinen
2017-01-11 15:39 ` James Bottomley
2017-01-11 17:56 ` Jason Gunthorpe
2017-01-11 18:25 ` James Bottomley
2017-01-11 19:04 ` Jason Gunthorpe
-- strict thread matches above, loose matches on Subject: below --
2017-01-02 13:22 Jarkko Sakkinen
2017-01-02 16:36 ` [tpmdd-devel] " James Bottomley
2017-01-02 19:33 ` Jarkko Sakkinen
2017-01-02 21:40 ` James Bottomley
2017-01-03 5:26 ` James Bottomley
2017-01-03 13:41 ` Jarkko Sakkinen
2017-01-03 16:14 ` James Bottomley
2017-01-03 18:36 ` Jarkko Sakkinen
2017-01-03 19:14 ` Jarkko Sakkinen
2017-01-03 19:34 ` James Bottomley
2017-01-03 21:54 ` Jason Gunthorpe
2017-01-04 12:58 ` Jarkko Sakkinen
2017-01-04 16:55 ` Jason Gunthorpe
2017-01-04 5:47 ` Andy Lutomirski
2017-01-04 13:00 ` Jarkko Sakkinen
2017-01-03 13:51 ` Jarkko Sakkinen
2017-01-03 16:36 ` James Bottomley
2017-01-03 18:40 ` Jarkko Sakkinen
2017-01-03 21:47 ` Jason Gunthorpe
2017-01-03 22:21 ` Ken Goldman
2017-01-03 23:20 ` Jason Gunthorpe
2017-01-03 22:39 ` James Bottomley
2017-01-04 0:17 ` Jason Gunthorpe
2017-01-04 0:29 ` James Bottomley
2017-01-04 0:56 ` Jason Gunthorpe
2017-01-04 12:50 ` Jarkko Sakkinen
2017-01-04 14:53 ` James Bottomley
2017-01-04 18:31 ` Jason Gunthorpe
2017-01-04 18:57 ` James Bottomley
2017-01-04 19:24 ` Jason Gunthorpe
2017-01-04 12:48 ` Jarkko Sakkinen
2017-01-03 21:32 ` Jason Gunthorpe
2017-01-03 22:03 ` James Bottomley
2017-01-05 15:52 ` Fuchs, Andreas
2017-01-05 17:27 ` Jason Gunthorpe
2017-01-05 18:06 ` James Bottomley
2017-01-06 8:43 ` Andreas Fuchs
2017-01-05 18:33 ` James Bottomley
2017-01-05 19:20 ` Jason Gunthorpe
2017-01-05 19:55 ` James Bottomley
2017-01-05 22:21 ` Jason Gunthorpe
2017-01-05 22:58 ` James Bottomley
2017-01-05 23:50 ` Jason Gunthorpe
2017-01-06 0:36 ` James Bottomley
2017-01-06 8:59 ` Andreas Fuchs
2017-01-06 19:10 ` Jason Gunthorpe
2017-01-06 19:02 ` Jason Gunthorpe
2017-01-09 22:39 ` Jarkko Sakkinen
2017-01-11 10:03 ` Andreas Fuchs
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