[PATCH v6 0/6] tpm: Preserve TPM measurement log across kexec (ppc64)
Stefan Berger
stefanb at linux.ibm.com
Fri Jul 8 03:20:20 AEST 2022
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
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 | 27 ++
kernel/kexec_file.c | 6 +
security/integrity/ima/ima_kexec.c | 2 +-
13 files changed, 469 insertions(+), 82 deletions(-)
base-commit: 88084a3df1672e131ddc1b4e39eeacfd39864acf
--
2.35.1
More information about the Linuxppc-dev
mailing list