From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Jarkko Sakkinen
<jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [PATCH v3 05/11] tpm: Get rid of module locking
Date: Mon, 22 Feb 2016 15:15:05 -0700 [thread overview]
Message-ID: <20160222221505.GB27228@obsidianresearch.com> (raw)
In-Reply-To: <20160222211141.GB3310-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
On Mon, Feb 22, 2016 at 11:11:41PM +0200, Jarkko Sakkinen wrote:
> On Fri, Feb 19, 2016 at 07:42:02AM -0500, Stefan Berger wrote:
> > Get rid of the locking of the module
> >
> > Signed-off-by: Stefan Berger <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>
> I tend to think that this should have been part of the previous patch
> with the description in the commit message why the RW-semaphore gives
> the needed guarantees.
Module locking is user visible (no longer prevents rmmod), and Stefan
wrote this code so it deserves it's own patch. The ops changes are not
user visible.
Jason
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next prev parent reply other threads:[~2016-02-22 22:15 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-19 12:41 [PATCH v3 00/11] Multi-instance vTPM driver Stefan Berger
2016-02-19 12:41 ` [PATCH v3 01/11] tpm: fix the cleanup of struct tpm_chip Stefan Berger
[not found] ` <1455885728-10315-1-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-19 12:41 ` [PATCH v3 02/11] tpm: Get rid of chip->pdev Stefan Berger
[not found] ` <1455885728-10315-3-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 19:25 ` Jarkko Sakkinen
2016-02-19 12:42 ` [PATCH v3 03/11] tpm: Get rid of devname Stefan Berger
[not found] ` <1455885728-10315-4-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 18:19 ` Jason Gunthorpe
[not found] ` <20160222181929.GB22088-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-22 19:42 ` Jarkko Sakkinen
[not found] ` <20160222194202.GC32667-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-22 19:58 ` Jason Gunthorpe
[not found] ` <20160222195816.GL22088-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-22 20:34 ` Jason Gunthorpe
2016-02-23 0:22 ` Stefan Berger
2016-02-19 12:42 ` [PATCH v3 04/11] tpm: Provide strong locking for device removal Stefan Berger
[not found] ` <1455885728-10315-5-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 21:08 ` Jarkko Sakkinen
[not found] ` <20160222210844.GA3310-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-22 22:20 ` Jason Gunthorpe
[not found] ` <20160222222017.GC27228-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 19:40 ` Jarkko Sakkinen
[not found] ` <20160223194014.GA5241-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-23 19:52 ` Jason Gunthorpe
[not found] ` <20160223195246.GC389-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 20:36 ` Jarkko Sakkinen
2016-02-23 20:43 ` Jarkko Sakkinen
2016-02-19 12:42 ` [PATCH v3 05/11] tpm: Get rid of module locking Stefan Berger
[not found] ` <1455885728-10315-6-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 18:22 ` Jason Gunthorpe
[not found] ` <20160222182245.GC22088-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 0:26 ` Stefan Berger
2016-02-22 21:11 ` Jarkko Sakkinen
[not found] ` <20160222211141.GB3310-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-22 22:15 ` Jason Gunthorpe [this message]
2016-02-19 12:42 ` [PATCH v3 06/11] tpm: Split out the devm stuff from tpmm_chip_alloc Stefan Berger
[not found] ` <1455885728-10315-7-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 18:24 ` Jason Gunthorpe
2016-02-22 21:14 ` Jarkko Sakkinen
[not found] ` <20160222211414.GC3310-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-22 22:13 ` Jason Gunthorpe
[not found] ` <20160222221328.GA27228-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 0:45 ` Stefan Berger
2016-02-23 11:31 ` Jarkko Sakkinen
2016-02-19 12:42 ` [PATCH v3 07/11] tpm: Replace device number bitmap with IDR Stefan Berger
[not found] ` <1455885728-10315-8-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 19:06 ` Jason Gunthorpe
[not found] ` <20160222190629.GE22088-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 1:15 ` Stefan Berger
2016-02-23 2:16 ` Stefan Berger
[not found] ` <201602230116.u1N1G4iu012263@d03av02.boulder.ibm.com>
[not found] ` <201602230116.u1N1G4iu012263-nNA/7dmquNI+UXBhvPuGgqsjOiXwFzmk@public.gmane.org>
2016-02-23 2:16 ` Jason Gunthorpe
[not found] ` <20160223021606.GC26177-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 23:04 ` Stefan Berger
[not found] ` <201602232305.u1NN521L020589@d03av01.boulder.ibm.com>
[not found] ` <201602232305.u1NN521L020589-Rn83F4s8Lwc+UXBhvPuGgqsjOiXwFzmk@public.gmane.org>
2016-02-23 23:18 ` Jason Gunthorpe
[not found] ` <201602230217.u1N2HIJT003183@d03av05.boulder.ibm.com>
[not found] ` <201602230217.u1N2HIJT003183-3MP/CPU4Muo+UXBhvPuGgqsjOiXwFzmk@public.gmane.org>
2016-02-23 2:18 ` Jason Gunthorpe
2016-02-19 12:42 ` [PATCH v3 08/11] tpm: Introduce TPM_CHIP_FLAG_VIRTUAL Stefan Berger
[not found] ` <1455885728-10315-9-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 19:19 ` Jason Gunthorpe
[not found] ` <20160222191922.GH22088-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 1:20 ` [PATCH v3 08/11] tpm: IntroduceTPM_CHIP_FLAG_VIRTUAL Stefan Berger
2016-02-23 1:21 ` Stefan Berger
[not found] ` <201602230121.u1N1LYk2024786@d01av01.pok.ibm.com>
[not found] ` <201602230121.u1N1LYk2024786-4ZtxiNBBw+3ImUpY6SP3GEEOCMrvLtNR@public.gmane.org>
2016-02-23 2:05 ` Jason Gunthorpe
[not found] ` <20160223020515.GA26177-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 3:40 ` Stefan Berger
[not found] ` <201602230116.u1N1Ghac006778@d01av05.pok.ibm.com>
[not found] ` <201602230116.u1N1Ghac006778-8DuMPbUlb4HImUpY6SP3GEEOCMrvLtNR@public.gmane.org>
2016-02-23 2:06 ` Jason Gunthorpe
2016-02-19 12:42 ` [PATCH v3 09/11] tpm: Driver for supporting multiple emulated TPMs Stefan Berger
[not found] ` <1455885728-10315-10-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-02-22 19:27 ` Jason Gunthorpe
[not found] ` <20160222192741.GI22088-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-23 1:45 ` Stefan Berger
[not found] ` <201602230142.u1N1gSuF029481@d01av05.pok.ibm.com>
[not found] ` <201602230142.u1N1gSuF029481-8DuMPbUlb4HImUpY6SP3GEEOCMrvLtNR@public.gmane.org>
2016-02-23 2:17 ` Jason Gunthorpe
[not found] ` <20160223021730.GD26177-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-24 23:10 ` Stefan Berger
[not found] ` <201602242306.u1ON6qGP030251-8DuMPbUlb4HImUpY6SP3GEEOCMrvLtNR@public.gmane.org>
2016-02-25 13:17 ` Jarkko Sakkinen
[not found] ` <20160225131732.GA20860-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-25 14:12 ` Stefan Berger
[not found] ` <201602251409.u1PE98LH012367@d01av05.pok.ibm.com>
[not found] ` <201602251409.u1PE98LH012367-8DuMPbUlb4HImUpY6SP3GEEOCMrvLtNR@public.gmane.org>
2016-02-25 17:39 ` Jason Gunthorpe
[not found] ` <20160225173956.GA1407-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-25 18:42 ` Stefan Berger
[not found] ` <201602251842.u1PIgEuL014249@d03av03.boulder.ibm.com>
[not found] ` <201602251842.u1PIgEuL014249-MijUUJkLaQs+UXBhvPuGgqsjOiXwFzmk@public.gmane.org>
2016-02-25 20:31 ` Jason Gunthorpe
[not found] ` <20160225203117.GA22984-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-02-25 22:11 ` Stefan Berger
2016-02-23 10:22 ` Jarkko Sakkinen
[not found] ` <20160223102211.GA9474-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-02-23 12:09 ` Stefan Berger
[not found] ` <201602231210.u1NCAD6D017196@d01av03.pok.ibm.com>
[not found] ` <201602231210.u1NCAD6D017196-CUdSWdNILC7ImUpY6SP3GEEOCMrvLtNR@public.gmane.org>
2016-02-23 18:36 ` Jarkko Sakkinen
2016-02-19 12:42 ` [PATCH v3 10/11] tpm: Initialize TPM and get durations and timeouts Stefan Berger
2016-02-19 12:42 ` [PATCH v3 11/11] A test program for vTPM device creation Stefan Berger
2016-02-22 19:20 ` [PATCH v3 00/11] Multi-instance vTPM driver Jarkko Sakkinen
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