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From: "Kenneth Goldman" <kgoldman-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
To: Jarkko Sakkinen
	<jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: greg-R92VP3DqSWVWk0Htik3J/w@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	James Bottomley
	<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>,
	linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [RFC] tpm2-space: add handling for global session exhaustion
Date: Fri, 10 Feb 2017 18:13:51 -0500	[thread overview]
Message-ID: <OF42F99452.D694823A-ON852580C3.007EDF64-852580C3.007F9C69@notes.na.collabserv.com> (raw)
In-Reply-To: <20170210084837.lq3mofgfwvjx623m-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>


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On Thu, Feb 09, 2017 at 12:04:26PM -0700, Jason Gunthorpe wrote:
Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> wrote on 02/10/2017
03:48:37 AM:

> > This series should focus on allowing a user space RM to co-exist with
> > the in-kernel services - lets try and tackle the idea of a
> > policy-restricted or unpriv-safe cdev when someone comes up with a
> > comprehensive proposal..

First, does "coexist" mean in series (two layers of RM) or in parallel
(both
have simultaneous access).

Or does "in-kernel services" not include an RM?

Assuming in series, it will complicate the lower RM.  The main issue,
as always, is session context.  If you permit the upper RM to save context,
the lower RM has to track the mapping, because the lower layer can
alter the saved session context (regapping).

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  parent reply	other threads:[~2017-02-10 23:13 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <jarkko.sakkinen@linux.intel.com>
2017-02-09  9:06 ` [tpmdd-devel] [RFC] tpm2-space: add handling for global session exhaustion Dr. Greg Wettstein
2017-02-09  9:06   ` Dr. Greg Wettstein
2017-02-09 15:19   ` [tpmdd-devel] " Jarkko Sakkinen
2017-02-09 15:19     ` Jarkko Sakkinen
2017-02-09 19:04     ` [tpmdd-devel] " Jason Gunthorpe
2017-02-09 19:04       ` Jason Gunthorpe
2017-02-09 19:29       ` [tpmdd-devel] " James Bottomley
2017-02-09 19:29         ` James Bottomley
2017-02-09 21:54         ` [tpmdd-devel] " Jason Gunthorpe
2017-02-09 21:54           ` Jason Gunthorpe
2017-02-10  8:48       ` [tpmdd-devel] " Jarkko Sakkinen
     [not found]         ` <20170210084837.lq3mofgfwvjx623m-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-02-10 23:13           ` Kenneth Goldman [this message]
2017-02-09 19:24   ` James Bottomley
2017-02-09 20:05   ` James Bottomley
2017-02-09 20:05     ` James Bottomley
     [not found] <James.Bottomley@HansenPartnership.com>
2017-02-10 10:03 ` Dr. Greg Wettstein
     [not found]   ` <201702101003.v1AA3plF029882-DHO+NtfOqB5PEDpkEIzg7wC/G2K4zDHf@public.gmane.org>
2017-02-10 16:46     ` James Bottomley
     [not found]       ` <1486745163.2502.26.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-02-10 21:13         ` Kenneth Goldman
2017-02-14 14:38           ` [tpmdd-devel] " Dr. Greg Wettstein
     [not found]             ` <20170214143829.GA28175-DHO+NtfOqB5PEDpkEIzg7wC/G2K4zDHf@public.gmane.org>
2017-02-14 16:47               ` James Bottomley
2017-02-10 21:18         ` Kenneth Goldman
2017-01-18 20:48 James Bottomley
2017-01-18 20:48 ` James Bottomley
     [not found] ` <1484772489.2396.2.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-19 12:25   ` Jarkko Sakkinen
     [not found]     ` <20170119122533.d7h5rgatpwl3qmcl-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-19 12:41       ` Jarkko Sakkinen
     [not found]         ` <20170119124101.nw7a7m735zhiivfo-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-27 21:20           ` Ken Goldman
2017-01-27 21:59             ` James Bottomley
2017-01-19 12:59       ` James Bottomley
2017-01-27 21:42   ` Ken Goldman
2017-01-27 22:04     ` James Bottomley
     [not found]       ` <1485554699.3229.20.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-27 23:35         ` Jason Gunthorpe
     [not found]           ` <20170127233513.GA28995-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-27 23:48             ` James Bottomley
2017-01-30  0:52       ` Ken Goldman
2017-01-30  0:52         ` Ken Goldman
2017-01-30 16:04         ` James Bottomley
     [not found]           ` <1485792295.2518.23.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-30 21:58             ` Jarkko Sakkinen
     [not found]               ` <20170130215815.4lr42ob7e4cycwgi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-30 22:13                 ` James Bottomley
     [not found]                   ` <1485814388.2518.28.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-30 22:46                     ` Ken Goldman
2017-01-31 13:31                     ` Jarkko Sakkinen
2017-02-10 17:22                     ` Kenneth Goldman
2017-01-31 19:28             ` Ken Goldman
2017-01-31 19:55               ` James Bottomley

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