From: Ken Goldman <kgold@linux.vnet.ibm.com>
To: unlisted-recipients:; (no To-header on input)
Cc: linux-ima-devel@lists.sourceforge.net,
linux-security-module@vger.kernel.org,
tpmdd-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: Aw: Re: [tpmdd-devel] [PATCH] tpm: improve tpm_tis send() performance by ignoring burstcount
Date: Fri, 11 Aug 2017 17:32:12 -0400 [thread overview]
Message-ID: <9cb350b6-32fd-529e-eb31-6800339cddb2@linux.vnet.ibm.com> (raw)
In-Reply-To: <trinity-b615e596-8095-4a0a-9922-3fa9a5724c30-1502312435959@3c-app-gmx-bs76>
On 8/9/2017 5:00 PM, Peter Huewe wrote:
>
> Since we are the linux kernel, we do have to care for legacy
> devices. And a system with LPC, PS2Mouse on SuperIO and a TPM are not
> that uncommon.
>
> And heck, we even have support for 1.1b TPM devices....
Understood. However, remember that SuperIO is a 1980's device that
predates the TPM. Since the TPM requires special LPC bus cycles, it's
even less likely that an old chipset has an attached TPM.
> Interesting - let me check with Georg tomorrow. Unfortunately I do
> not have access to my tcg mails from home (since I'm not working :),
> but did you _explicitly_ talk about LPC and the system? I'm sure the
> TPM does not care about the waitstates...
Yes, Infineon was one of the 3 TPM vendors who confirmed this.
next prev parent reply other threads:[~2017-08-11 21:31 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-07 11:46 Nayna Jain
2017-08-07 11:52 ` Peter Huewe
2017-08-07 14:25 ` Nayna
2017-08-08 21:50 ` Jarkko Sakkinen
2017-08-08 19:11 ` Jarkko Sakkinen
2017-08-09 20:23 ` [tpmdd-devel] " Ken Goldman
2017-08-09 20:43 ` Aw: " Peter Huewe
2017-08-11 21:54 ` Ken Goldman
[not found] ` <20170814101046.5hqrkaqmfvl7ugwj@linux.intel.com>
2017-08-16 19:51 ` Ken Goldman
2017-08-09 20:25 ` Ken Goldman
2017-08-09 21:00 ` Aw: " Peter Huewe
2017-08-11 11:14 ` Jarkko Sakkinen
2017-08-11 15:30 ` Mimi Zohar
2017-08-14 10:51 ` Jarkko Sakkinen
2017-08-14 10:56 ` Jarkko Sakkinen
2017-08-14 12:03 ` Mimi Zohar
2017-08-15 6:08 ` Jarkko Sakkinen
2017-08-14 12:12 ` Mimi Zohar
2017-08-15 6:09 ` Jarkko Sakkinen
2017-08-11 21:32 ` Ken Goldman [this message]
2017-08-13 23:53 ` msuchanek
2017-08-15 22:02 ` Ken Goldman
2017-08-16 10:24 ` Michal Suchánek
2017-08-11 21:42 ` [Linux-ima-devel] " Ken Goldman
2017-08-08 19:07 ` Jarkko Sakkinen
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