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Date:	Tue, 7 Oct 2014 12:02:09 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Stefan Berger <stefanb@...ux.vnet.ibm.com>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Peter Huewe <PeterHuewe@....de>, keyrings@...ux-nfs.org,
	jarkko.sakkinnen@...ux.intel.com,
	"ksummit-discuss@...ts.linuxfoundation.org" 
	<ksummit-discuss@...ts.linuxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	LSM List <linux-security-module@...r.kernel.org>,
	tpmdd-devel@...ts.sourceforge.net,
	James Morris <james.l.morris@...cle.com>,
	linux-ima-devel@...ts.sourceforge.net,
	trousers-tech@...ts.sourceforge.net
Subject: Re: [tpmdd-devel] [TrouSerS-tech] [Ksummit-discuss] TPM MiniSummit @
 LinuxCon Europe

On Tue, Oct 07, 2014 at 01:54:41PM -0400, Stefan Berger wrote:

> Why add the complexity of swapping of authenticated sessions and keys 
> into the kernel if you can handle this in userspace? You need a library 
> that is aware of the number of key slots and slots for sessions in the 
> TPM and swaps them in at out when applications need them. Trousers is 
> such a library that was designed to cope with the limitations of the 
> device and make its functionality available to all applications that 
> want to access it.

How does trousers work with the kernel when the kernel is also using
TPM key slots for IMA/keyring/whatever?

Jason
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