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From: "Michal Suchánek" <msuchanek@suse.de>
To: Daniel Axtens <dja@axtens.net>
Cc: keyrings@vger.kernel.org, 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>,
	Luis Chamberlain <mcgrof@kernel.org>,
	Paul Mackerras <paulus@samba.org>,
	Hari Bathini <hbathini@linux.ibm.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
	linuxppc-dev@lists.ozlabs.org,
	Frank van der Linden <fllinden@amazon.com>,
	Thiago Jung Bauermann <bauerman@linux.ibm.com>
Subject: Re: [PATCH 0/3] KEXEC_SIG with appended signature
Date: Fri, 5 Nov 2021 14:14:01 +0100	[thread overview]
Message-ID: <20211105131401.GL11195@kunlun.suse.cz> (raw)
In-Reply-To: <87czneeurr.fsf@dja-thinkpad.axtens.net>

On Fri, Nov 05, 2021 at 09:55:52PM +1100, Daniel Axtens wrote:
> Michal Suchanek <msuchanek@suse.de> writes:
> 
> > S390 uses appended signature for kernel but implements the check
> > separately from module loader.
> >
> > Support for secure boot on powerpc with appended signature is planned -
> > grub patches submitted upstream but not yet merged.
> 
> Power Non-Virtualised / OpenPower already supports secure boot via kexec
> with signature verification via IMA. I think you have now sent a
> follow-up series that merges some of the IMA implementation, I just
> wanted to make sure it was clear that we actually already have support

So is IMA_KEXEC and KEXEC_SIG redundant?

I see some architectures have both. I also see there is a lot of overlap
between the IMA framework and the KEXEC_SIG and MODULE_SIg.

Thanks

Michal

  reply	other threads:[~2021-11-05 13:14 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-03 14:27 [PATCH 0/3] KEXEC_SIG with appended signature Michal Suchanek
2021-11-03 14:27 ` [PATCH 1/3] s390/kexec_file: Don't opencode appended signature verification Michal Suchanek
2021-11-03 14:27 ` [PATCH 2/3] module: strip the signature marker in the verification function Michal Suchanek
2021-11-03 14:27 ` [PATCH 3/3] powerpc/kexec_file: Add KEXEC_SIG support Michal Suchanek
2021-11-05  9:55 ` [PATCH 0/2] Additional appended signature cleanup Michal Suchanek
2021-11-05  9:55   ` [PATCH 1/2] module: Use key_being_used_for for log messages in verify_appended_signature Michal Suchanek
2021-11-05  9:55   ` [PATCH 2/2] module: Move duplicate mod_check_sig users code to mod_parse_sig Michal Suchanek
2021-11-05 10:55 ` [PATCH 0/3] KEXEC_SIG with appended signature Daniel Axtens
2021-11-05 13:14   ` Michal Suchánek [this message]
2021-11-07 22:18     ` Daniel Axtens
2021-11-08 12:05       ` Michal Suchánek
2021-11-11 22:26         ` Nayna
2021-11-12  8:30           ` Michal Suchánek
2021-11-15 23:53             ` Nayna
2021-11-16  9:53               ` Michal Suchánek
2021-11-18 22:34                 ` Nayna
2021-11-19 11:18                   ` Michal Suchánek
2021-11-19 18:16                     ` Mimi Zohar
2021-11-24 11:09                       ` Philipp Rudo
2021-11-24 13:10                         ` Mimi Zohar
2021-11-24 13:27                           ` Michal Suchánek
2021-11-25  9:14                             ` Philipp Rudo
2021-11-11 22:23     ` Nayna

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