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 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 Jonathan McDowell (1): x86/kexec: Carry forward IMA measurement log on kexec 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 Vaibhav Jain (1): of: check previous kernel's ima-kexec-buffer against memory bounds arch/x86/Kconfig | 1 + arch/x86/include/uapi/asm/bootparam.h | 9 + arch/x86/kernel/e820.c | 6 +- arch/x86/kernel/kexec-bzimage64.c | 42 +++- arch/x86/kernel/setup.c | 63 +++++ drivers/char/tpm/eventlog/of.c | 31 +-- drivers/of/kexec.c | 342 ++++++++++++++++++++++---- include/linux/ima.h | 5 + include/linux/kexec.h | 6 + include/linux/of.h | 11 +- include/linux/tpm.h | 36 +++ kernel/kexec_file.c | 6 + security/integrity/ima/ima_kexec.c | 2 +- 13 files changed, 478 insertions(+), 82 deletions(-) base-commit: 3d7cb6b04c3f3115719235cc6866b10326de34cd -- 2.35.1
