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192c0159 |
| 11-Feb-2026 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'powerpc-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates for 7.0
- Implement masked user access
- Add bpf support for internal only per-CPU i
Merge tag 'powerpc-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates for 7.0
- Implement masked user access
- Add bpf support for internal only per-CPU instructions and inline the bpf_get_smp_processor_id() and bpf_get_current_task() functions
- Fix pSeries MSI-X allocation failure when quota is exceeded
- Fix recursive pci_lock_rescan_remove locking in EEH event handling
- Support tailcalls with subprogs & BPF exceptions on 64bit
- Extend "trusted" keys to support the PowerVM Key Wrapping Module (PKWM)
Thanks to Abhishek Dubey, Christophe Leroy, Gaurav Batra, Guangshuo Li, Jarkko Sakkinen, Mahesh Salgaonkar, Mimi Zohar, Miquel Sabaté Solà, Nam Cao, Narayana Murty N, Nayna Jain, Nilay Shroff, Puranjay Mohan, Saket Kumar Bhaskar, Sourabh Jain, Srish Srinivasan, and Venkat Rao Bagalkote.
* tag 'powerpc-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (27 commits) powerpc/pseries: plpks: export plpks_wrapping_is_supported docs: trusted-encryped: add PKWM as a new trust source keys/trusted_keys: establish PKWM as a trusted source pseries/plpks: add HCALLs for PowerVM Key Wrapping Module pseries/plpks: expose PowerVM wrapping features via the sysfs powerpc/pseries: move the PLPKS config inside its own sysfs directory pseries/plpks: fix kernel-doc comment inconsistencies powerpc/smp: Add check for kcalloc() failure in parse_thread_groups() powerpc: kgdb: Remove OUTBUFMAX constant powerpc64/bpf: Additional NVR handling for bpf_throw powerpc64/bpf: Support exceptions powerpc64/bpf: Add arch_bpf_stack_walk() for BPF JIT powerpc64/bpf: Avoid tailcall restore from trampoline powerpc64/bpf: Support tailcalls with subprogs powerpc64/bpf: Moving tail_call_cnt to bottom of frame powerpc/eeh: fix recursive pci_lock_rescan_remove locking in EEH event handling powerpc/pseries: Fix MSI-X allocation failure when quota is exceeded powerpc/iommu: bypass DMA APIs for coherent allocations for pre-mapped memory powerpc64/bpf: Inline bpf_get_smp_processor_id() and bpf_get_current_task/_btf() powerpc64/bpf: Support internal-only MOV instruction to resolve per-CPU addrs ...
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| #
c99fcb0d |
| 27-Jan-2026 |
Srish Srinivasan <ssrish@linux.ibm.com> |
keys/trusted_keys: establish PKWM as a trusted source
The wrapping key does not exist by default and is generated by the hypervisor as a part of PKWM initialization. This key is then persisted by th
keys/trusted_keys: establish PKWM as a trusted source
The wrapping key does not exist by default and is generated by the hypervisor as a part of PKWM initialization. This key is then persisted by the hypervisor and is used to wrap trusted keys. These are variable length symmetric keys, which in the case of PowerVM Key Wrapping Module (PKWM) are generated using the kernel RNG. PKWM can be used as a trust source through the following example keyctl commands:
keyctl add trusted my_trusted_key "new 32" @u
Use the wrap_flags command option to set the secure boot requirement for the wrapping request through the following keyctl commands
case1: no secure boot requirement. (default) keyctl usage: keyctl add trusted my_trusted_key "new 32" @u OR keyctl add trusted my_trusted_key "new 32 wrap_flags=0x00" @u
case2: secure boot required to in either audit or enforce mode. set bit 0 keyctl usage: keyctl add trusted my_trusted_key "new 32 wrap_flags=0x01" @u
case3: secure boot required to be in enforce mode. set bit 1 keyctl usage: keyctl add trusted my_trusted_key "new 32 wrap_flags=0x02" @u
NOTE: -> Setting the secure boot requirement is NOT a must. -> Only either of the secure boot requirement options should be set. Not both. -> All the other bits are required to be not set. -> Set the kernel parameter trusted.source=pkwm to choose PKWM as the backend for trusted keys implementation. -> CONFIG_PSERIES_PLPKS must be enabled to build PKWM.
Add PKWM, which is a combination of IBM PowerVM and Power LPAR Platform KeyStore, as a new trust source for trusted keys.
Signed-off-by: Srish Srinivasan <ssrish@linux.ibm.com> Tested-by: Nayna Jain <nayna@linux.ibm.com> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com> Reviewed-by: Nayna Jain <nayna@linux.ibm.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20260127145228.48320-6-ssrish@linux.ibm.com
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