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Date:   Tue, 25 Jan 2022 12:30:52 -0800
From:   Luis Chamberlain <mcgrof@kernel.org>
To:     Michal Suchanek <msuchanek@suse.de>,
        David Howells <dhowells@redhat.com>,
        Aaron Tomlin <atomlin@redhat.com>
Cc:     keyrings@vger.kernel.org, linux-crypto@vger.kernel.org,
        linux-integrity@vger.kernel.org, kexec@lists.infradead.org,
        Philipp Rudo <prudo@redhat.com>,
        Mimi Zohar <zohar@linux.ibm.com>,
        Nayna <nayna@linux.vnet.ibm.com>, Rob Herring <robh@kernel.org>,
        linux-s390@vger.kernel.org, Vasily Gorbik <gor@linux.ibm.com>,
        Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
        Heiko Carstens <hca@linux.ibm.com>,
        Jessica Yu <jeyu@kernel.org>, linux-kernel@vger.kernel.org,
        David Howells <dhowells@redhat.com>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
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        Sven Schnelle <svens@linux.ibm.com>,
        Baoquan He <bhe@redhat.com>,
        linux-security-module@vger.kernel.org
Subject: Re: [PATCH v5 0/6] KEXEC_SIG with appended signature
Message-ID: <YfBd/EDGUx9UIHcb@bombadil.infradead.org>
References: <cover.1641900831.git.msuchanek@suse.de>
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Sender: Luis Chamberlain <mcgrof@infradead.org>
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On Tue, Jan 11, 2022 at 12:37:42PM +0100, Michal Suchanek wrote:
> Hello,
> 
> This is a refresh of the KEXEC_SIG series.
> 
> This adds KEXEC_SIG support on powerpc and deduplicates the code dealing
> with appended signatures in the kernel.
> 
> powerpc supports IMA_KEXEC but that's an exception rather than the norm.
> On the other hand, KEXEC_SIG is portable across platforms.
> 
> For distributions to have uniform security features across platforms one
> option should be used on all platforms.
> 
> Thanks
> 
> Michal
> 
> Previous revision: https://lore.kernel.org/linuxppc-dev/cover.1637862358.git.msuchanek@suse.de/
> Patched kernel tree: https://github.com/hramrach/kernel/tree/kexec_sig
> 
> Michal Suchanek (6):
>   s390/kexec_file: Don't opencode appended signature check.
>   powerpc/kexec_file: Add KEXEC_SIG support.
>   kexec_file: Don't opencode appended signature verification.
>   module: strip the signature marker in the verification function.
>   module: Use key_being_used_for for log messages in
>     verify_appended_signature
>   module: Move duplicate mod_check_sig users code to mod_parse_sig

What tree should this go through? I'd prefer if over through modules
tree as it can give a chance for Aaron Tomlin to work with this for his
code refactoring of kernel/module*.c to kernel/module/

  Luis