From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Matthew Garrett <matthewgarrett@google.com>
Cc: linux-integrity@vger.kernel.org, peterhuewe@gmx.de, jgg@ziepe.ca
Subject: Re: Add support for the TCG2 event log on UEFI systems
Date: Thu, 10 Jan 2019 19:40:50 +0200 [thread overview]
Message-ID: <20190110174050.GH6589@linux.intel.com> (raw)
In-Reply-To: <20190109014847.39980-1-matthewgarrett@google.com>
On Tue, Jan 08, 2019 at 05:48:42PM -0800, Matthew Garrett wrote:
> There are several complexities associated with handling the crypto-agile
> log format from TPM2 systems on UEFI platforms. The first is that each
> log entry may be of variable length, necessitating parsing the log
> in-kernel to determine its length. The second is that the log is kept in
> boot services memory (which is reclaimed by the OS after
> ExitBootServices() is called), but ExitBootServices() may introduce
> additional log entries. These additional log entries are added to a
> separate log which should then be merged into the initial log.
>
> This patchset makes the existing support for calculating TPM events more
> general (in order to allow it to be used from the EFI boot stub), adds
> support for copying up crypto agile logs from the boot environment to
> the running kernel and adds support for merging the final events log
> into the initial events log.
With a brief look, looks really good. I'll probably don't have time
to do a detailed review this week (still catching up after holidays).
/Jarkko
prev parent reply other threads:[~2019-01-10 17:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-09 1:48 Add support for the TCG2 event log on UEFI systems Matthew Garrett
2019-01-09 1:48 ` [PATCH 1/5] tpm: Abstract crypto agile event size calculations Matthew Garrett
2019-01-16 18:47 ` Jarkko Sakkinen
2019-01-09 1:48 ` [PATCH 2/5] tpm: Fix event log types for TPM2 Matthew Garrett
2019-01-16 21:42 ` Jarkko Sakkinen
2019-01-17 7:53 ` Roberto Sassu
2019-01-18 15:15 ` Jarkko Sakkinen
2019-01-09 1:48 ` [PATCH 3/5] tpm: Reserve the TPM final events table Matthew Garrett
2019-01-09 1:48 ` [PATCH 4/5] tpm: Append the final event log to the TPM event log Matthew Garrett
2019-01-09 1:48 ` [PATCH 5/5] efi: Attempt to get the TCG2 event log in the boot stub Matthew Garrett
2019-01-10 17:40 ` Jarkko Sakkinen [this message]
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