linux-kernel - Re: [PATCH v11 0/4] integrity: support including firmware ".platform" keys at build time

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Date:   Fri, 11 Mar 2022 16:03:12 -0500
From:   Nayna <nayna@...ux.vnet.ibm.com>
To:     Jarkko Sakkinen <jarkko@...nel.org>,
        Nageswara Sastry <rnsastry@...ux.ibm.com>,
        Nayna Jain <nayna@...ux.ibm.com>,
        linux-integrity@...r.kernel.org, keyrings@...r.kernel.org
Cc:     dhowells@...hat.com, zohar@...ux.ibm.com,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, dimitri.ledkov@...onical.com,
        seth@...shee.me, Masahiro Yamada <masahiroy@...nel.org>
Subject: Re: [PATCH v11 0/4] integrity: support including firmware ".platform"
 keys at build time


On 3/11/22 11:42, Jarkko Sakkinen wrote:
> On Fri, 2022-03-11 at 10:11 +0530, Nageswara Sastry wrote:
>>
>> On 11/03/22 3:14 am, Nayna Jain wrote:
>>> Some firmware support secure boot by embedding static keys to verify the
>>> Linux kernel during boot. However, these firmware do not expose an
>>> interface for the kernel to load firmware keys onto the ".platform"
>>> keyring, preventing the kernel from verifying the kexec kernel image
>>> signature.
>>>
>>> This patchset exports load_certificate_list() and defines a new function
>>> load_builtin_platform_cert() to load compiled in certificates onto the
>>> ".platform" keyring.
>>>
>>> Changelog:
>>> v11:
>>> * Added a new patch to conditionally build extract-cert if
>>> PLATFORM_KEYRING is enabled.
>>>
>> Tested the following four patches with and with out setting
>> CONFIG_INTEGRITY_PLATFORM_KEYS
>>
>> Tested-by: Nageswara R Sastry <rnsastry@...ux.ibm.com>
> OK, I added it:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git

Thanks Jarkko. Masahiro Yamada would prefer to revert the original 
commit 340a02535ee785c64c62a9c45706597a0139e972 i.e. move extract-cert 
back to the scripts/ directory.

I am just posting v12 which includes Masahiro feedback. Nageswara has 
already tested v12 version as well.

I am fine either way 1.) Adding v11 and then separately handling of 
reverting of the commit or 2.) Adding v12 version which includes the 
revert. I leave the decision on you as to which one to upstream.

Thanks & Regards,

     - Nayna