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Tue, 18 Apr 2023 13:44:10 +0000 (GMT) From: Stefan Berger To: kexec@lists.infradead.org, devicetree@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: nayna@linux.ibm.com, nasastry@in.ibm.com, mpe@ellerman.id.au, Stefan Berger Subject: [PATCH v9 0/4] tpm: Preserve TPM measurement log across kexec (ppc64) Date: Tue, 18 Apr 2023 09:44:05 -0400 Message-Id: <20230418134409.177485-1-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: j07xjsakL0WB2dbjHPPqgUvcVeaj2IS1 X-Proofpoint-ORIG-GUID: j07xjsakL0WB2dbjHPPqgUvcVeaj2IS1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-18_09,2023-04-18_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 suspectscore=0 mlxscore=0 impostorscore=0 spamscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 adultscore=0 clxscore=1011 mlxlogscore=674 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304180118 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230418_064422_962458_EB28F08E X-CRM114-Status: GOOD ( 17.12 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org The of-tree subsystem does not currently preserve the IBM vTPM 1.2 and vTPM 2.0 measurement logs across a kexec on PowerVM and PowerKVM. This series fixes this for the kexec_file_load() syscall using the flattened device tree (fdt) to carry the TPM measurement log's buffer across kexec. Stefan v9: - 2/4: Rebased on 6.3-rc7: call tpm_read_log_memory_region if -ENODEV returned v8: - Added Jarkko's, Coiby's, and Rob's tags - Rebase on v6.0-rc3 that absorbed 2 already upstreamed patches v7: - Added Nageswara's Tested-by tags - Added back original comment to inline function and removed Jarkko's R-b tag v6: - Add __init to get_kexec_buffer as suggested by Jonathan - Fixed issue detected by kernel test robot v5: - Rebased on 1 more patch that would otherwise create merge conflicts v4: - Rebased on 2 patches that would otherwise create merge conflicts; posting these patches in this series with several tags removed so krobot can test the series already - Changes to individual patches documented in patch descripitons v3: - Moved TPM Open Firmware related function to drivers/char/tpm/eventlog/tpm_of.c v2: - rearranged patches - fixed compilation issues for x86 Palmer Dabbelt (1): drivers: of: kexec ima: Support 32-bit platforms Stefan Berger (3): tpm: of: Make of-tree specific function commonly available of: kexec: Refactor IMA buffer related functions to make them reusable tpm/kexec: Duplicate TPM measurement log in of-tree for kexec drivers/char/tpm/eventlog/of.c | 30 +-- drivers/of/kexec.c | 336 ++++++++++++++++++++++++++++----- include/linux/kexec.h | 6 + include/linux/of.h | 6 + include/linux/tpm.h | 36 ++++ kernel/kexec_file.c | 6 + 6 files changed, 344 insertions(+), 76 deletions(-) base-commit: 6a8f57ae2eb07ab39a6f0ccad60c760743051026 -- 2.38.1 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec