This patch series update the pkey subsystem with more documentation and
rename variables so that it is easy to follow the code. We drop the changes
to support KUAP/KUEP with hash translation in this update. The changes
are adding 200 cycles to null syscalls benchmark and I want to look at that
closely before requesting a merge. The rest of the patches are included
in this series. This should avoid having to carry a large patchset across
the upstream merge. Some of the changes in here make the hash KUEP/KUAP
addition simpler.
Changes from v5:
* Address review feedback.
* Dropped patches moving kup to generic name.
* Dropped static key changes related to execute only support.
Changes from v4:
* Drop hash KUAP/KUEP changes.
Changes from v3:
* Fix build error reported by kernel test robot <l...@intel.com>
Changes from v2:
* Rebase to the latest kernel.
* Fixed a bug with disabling KUEP/KUAP on kernel command line
* Added a patch to make kup key dynamic.
Changes from v1:
* Rebased on latest kernel
Aneesh Kumar K.V (23):
powerpc/book3s64/pkeys: Use PVR check instead of cpu feature
powerpc/book3s64/pkeys: Fixup bit numbering
powerpc/book3s64/pkeys: pkeys are supported only on hash on book3s.
powerpc/book3s64/pkeys: Move pkey related bits in the linux page table
powerpc/book3s64/pkeys: Explain key 1 reservation details
powerpc/book3s64/pkeys: Simplify the key initialization
powerpc/book3s64/pkeys: Prevent key 1 modification from userspace.
powerpc/book3s64/pkeys: kill cpu feature key CPU_FTR_PKEY
powerpc/book3s64/pkeys: Simplify pkey disable branch
powerpc/book3s64/pkeys: Convert pkey_total to num_pkey
powerpc/book3s64/pkeys: Make initial_allocation_mask static
powerpc/book3s64/pkeys: Mark all the pkeys above max pkey as reserved
powerpc/book3s64/pkeys: Add MMU_FTR_PKEY
powerpc/book3s64/kuep: Add MMU_FTR_KUEP
powerpc/book3s64/pkeys: Use pkey_execute_disable_supported
powerpc/book3s64/pkeys: Use MMU_FTR_PKEY instead of pkey_disabled
static key
powerpc/book3s64/keys: Print information during boot.
powerpc/book3s64/keys/kuap: Reset AMR/IAMR values on kexec
powerpc/book3s64/kuap: Move UAMOR setup to key init function
powerpc/selftest/ptrave-pkey: Rename variables to make it easier to
follow code
powerpc/selftest/ptrace-pkey: Update the test to mark an invalid pkey
correctly
powerpc/selftest/ptrace-pkey: Don't update expected UAMOR value
powerpc/book3s64/pkeys: Remove is_pkey_enabled()
arch/powerpc/include/asm/book3s/64/hash-4k.h | 21 +-
arch/powerpc/include/asm/book3s/64/hash-64k.h | 12 +-
.../powerpc/include/asm/book3s/64/hash-pkey.h | 32 ++
arch/powerpc/include/asm/book3s/64/kexec.h | 23 ++
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 8 +-
arch/powerpc/include/asm/book3s/64/mmu.h | 6 +
arch/powerpc/include/asm/book3s/64/pgtable.h | 17 +-
arch/powerpc/include/asm/book3s/64/pkeys.h | 27 ++
arch/powerpc/include/asm/cputable.h | 13 +-
arch/powerpc/include/asm/kexec.h | 12 +
arch/powerpc/include/asm/mmu.h | 17 +
arch/powerpc/include/asm/pkeys.h | 65 +---
arch/powerpc/include/asm/processor.h | 1 -
arch/powerpc/kernel/dt_cpu_ftrs.c | 6 -
arch/powerpc/kernel/misc_64.S | 14 -
arch/powerpc/kernel/prom.c | 5 +
arch/powerpc/kernel/ptrace/ptrace-view.c | 27 +-
arch/powerpc/kernel/smp.c | 1 +
arch/powerpc/kexec/core_64.c | 2 +
arch/powerpc/mm/book3s64/hash_utils.c | 4 +
arch/powerpc/mm/book3s64/pgtable.c | 3 +
arch/powerpc/mm/book3s64/pkeys.c | 294 ++++++++++--------
arch/powerpc/mm/book3s64/radix_pgtable.c | 8 +-
.../selftests/powerpc/ptrace/ptrace-pkey.c | 55 ++--
24 files changed, 404 insertions(+), 269 deletions(-)
create mode 100644 arch/powerpc/include/asm/book3s/64/hash-pkey.h
create mode 100644 arch/powerpc/include/asm/book3s/64/kexec.h
create mode 100644 arch/powerpc/include/asm/book3s/64/pkeys.h
--
2.26.2
