linux-kernel - Re: [PATCH 3/3] tpm: ibmvtpm: Add support for TPM 2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200213183508.GL31668@ziepe.ca>
Date:   Thu, 13 Feb 2020 14:35:08 -0400
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Stefan Berger <stefanb@...ux.ibm.com>
Cc:     Nayna <nayna@...ux.vnet.ibm.com>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        linux-integrity@...r.kernel.org, aik@...abs.ru,
        david@...son.dropbear.id.au, linux-kernel@...r.kernel.org,
        gcwilson@...ux.ibm.com
Subject: Re: [PATCH 3/3] tpm: ibmvtpm: Add support for TPM 2

On Thu, Feb 13, 2020 at 01:20:12PM -0500, Stefan Berger wrote:

> I don't want side effects for the TPM 1.2 case here, so I am only modifying
> the flag for the case where the new TPM 2 is being used.  Here's the code
> where it shows the effect.

I'm surprised this driver is using AUTO_STARTUP, it was intended for
embedded cases where their is no firmware to boot the TPM.

Chips using AUTO_STARTUP are basically useless for PCRs/etc.

I'd expect somthing called vtpm to have been started and PCRs working
before Linux is started??

Jason