linux-kernel - [PATCH 0/3] KEXEC_SIG with appended signature

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Message-Id: <cover.1635948742.git.msuchanek@suse.de>
Date:   Wed,  3 Nov 2021 15:27:05 +0100
From:   Michal Suchanek <msuchanek@...e.de>
To:     keyrings@...r.kernel.org
Cc:     Michal Suchanek <msuchanek@...e.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        David Howells <dhowells@...hat.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Jessica Yu <jeyu@...nel.org>, Rob Herring <robh@...nel.org>,
        Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Frank van der Linden <fllinden@...zon.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org
Subject: [PATCH 0/3] KEXEC_SIG with appended signature

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.

This is an attempt at unified appended signature verification.

Thanks

Michal

Michal Suchanek (3):
  s390/kexec_file: Don't opencode appended signature verification.
  module: strip the signature marker in the verification function.
  powerpc/kexec_file: Add KEXEC_SIG support.

 arch/powerpc/Kconfig                  | 11 +++++++
 arch/powerpc/kexec/elf_64.c           | 14 +++++++++
 arch/s390/kernel/machine_kexec_file.c | 42 +++------------------------
 include/linux/verification.h          |  3 ++
 kernel/module-internal.h              |  2 --
 kernel/module.c                       | 11 +++----
 kernel/module_signing.c               | 32 ++++++++++++++------
 7 files changed, 59 insertions(+), 56 deletions(-)

-- 
2.31.1