From: Stefan Berger <stefanb@linux.ibm.com>
To: mpe@ellerman.id.au, linux-integrity@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Cc: devicetree@vger.kernel.org, rnsastry@linux.ibm.com,
jsnitsel@redhat.com, linux-kernel@vger.kernel.org,
jarkko@kernel.org, peterhuewe@gmx.de, viparash@in.ibm.com,
Stefan Berger <stefanb@linux.ibm.com>
Subject: [RFC PATCH v2 0/3] Preserve TPM log across kexec
Date: Mon, 11 Mar 2024 09:20:27 -0400 [thread overview]
Message-ID: <20240311132030.1103122-1-stefanb@linux.ibm.com> (raw)
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
next reply other threads:[~2024-03-11 13:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-11 13:20 Stefan Berger [this message]
2024-03-11 13:20 ` [RFC PATCH v2 1/3] powerpc/prom_init: Replace linux,sml-base/sml-size with linux,sml-log Stefan Berger
2024-03-11 17:24 ` Christophe Leroy
2024-03-11 19:10 ` Stefan Berger
2024-03-11 17:47 ` Jerry Snitselaar
2024-03-11 20:21 ` Jarkko Sakkinen
2024-03-11 13:20 ` [RFC PATCH v2 2/3] dt-bindings: tpm: Add linux,sml-log to ibm,vtpm.yaml Stefan Berger
2024-03-12 11:11 ` Lukas Wunner
2024-03-12 14:12 ` Stefan Berger
2024-03-12 15:52 ` Jarkko Sakkinen
2024-03-11 13:20 ` [RFC PATCH v2 3/3] tpm: of: If available use linux,sml-log to get the log and its size Stefan Berger
2024-03-11 20:25 ` Jarkko Sakkinen
2024-03-11 20:33 ` Stefan Berger
2024-03-12 15:43 ` Jarkko Sakkinen
2024-03-12 19:37 ` Stefan Berger
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