linux-kernel - [RFC PATCH v2 0/3] Preserve TPM log across kexec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240311132030.1103122-1-stefanb@linux.ibm.com>
Date: Mon, 11 Mar 2024 09:20:27 -0400
From: Stefan Berger <stefanb@...ux.ibm.com>
To: mpe@...erman.id.au, linux-integrity@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Cc: linux-kernel@...r.kernel.org, jarkko@...nel.org, rnsastry@...ux.ibm.com,
        peterhuewe@....de, viparash@...ibm.com, devicetree@...r.kernel.org,
        jsnitsel@...hat.com, Stefan Berger <stefanb@...ux.ibm.com>
Subject: [RFC PATCH v2 0/3] Preserve TPM log across kexec

This series resolves an issue on PowerVM and KVM on Power where the memory
the TPM log was held in may become inaccessible or corrupted after a kexec
soft reboot. The solution on these two platforms is to store the whole log
in the device tree because the device tree is preserved across a kexec with
either of the two kexec syscalls.

Regards,
   Stefan

v2:
 - Added DT bindings patch (2/3)
 - Reformulated commit messages and addded Fixes tags
 - Follow Michael's suggestion on prom_init patch (1/3)

Stefan Berger (3):
  powerpc/prom_init: Replace linux,sml-base/sml-size with linux,sml-log
  dt-bindings: tpm: Add linux,sml-log to ibm,vtpm.yaml
  tpm: of: If available use linux,sml-log to get the log and its size

 .../devicetree/bindings/tpm/ibm,vtpm.yaml     | 20 +++++++++--
 .../devicetree/bindings/tpm/tpm-common.yaml   | 14 +++++++-
 arch/powerpc/kernel/prom_init.c               | 27 +++++++++-----
 drivers/char/tpm/eventlog/of.c                | 36 ++++++-------------
 4 files changed, 61 insertions(+), 36 deletions(-)

-- 
2.43.0