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
