v8 updates:
- Edited changelog for better readability
v7 updates:
- Rebased patchset to v6.11.0-rc1
- Removed ia32 and x32 function interface changes as PKRU is only
supported in 64-bit mode, as suggested by Jeff Xu
v6 updates:
- Rebased patchset to v6.10.0-rc5
- Changed sig_prepare_pkru() back to enabling all pkeys, based on
discussion with Jeff Xu
v5 updates:
- No major changes, mostly a resend of v4 - except for updating the
commit description for patch 5/5
v4 updates (based on review feedback from Thomas Gleixner):
- Simplified update_pkru_in_sigframe()
- Changed sigpkru to enable minimally required keys (init_pkru and
current pkru)
- Modified pkey_sighandler_tests.c to use kselfttest framework
- Fixed commit descriptions
- Fixed sigreturn use case (pointed out by Jeff Xu)
- Added a new sigreturn test case
v3 updates (based on review feedback from Ingo Molnar and Dave Hansen):
- Split the original patch into 3:
- function interface changes
- helper functions
- functional change to write pkru on sigframe
- Enabled all pkeys before XSAVE - i.e. wrpkru(0), rather than assuming
that the alt sig stack is always protected by pkey 0.
- Added a few test cases in pkey_sighandler_tests.c.
I had some trouble adding these tests to
tools/testing/selftests/mm/protection_keys.c, so they're in a separate
file.
Aruna Ramakrishna (4):
x86/pkeys: Add PKRU as a parameter in signal handling functions
x86/pkeys: Add helper functions to update PKRU on the sigframe
x86/pkeys: Update PKRU to enable all pkeys before XSAVE
x86/pkeys: Restore altstack access in sigreturn()
Keith Lucas (1):
selftests/mm: Add new testcases for pkeys
arch/x86/include/asm/fpu/signal.h | 2 +-
arch/x86/kernel/fpu/signal.c | 27 +-
arch/x86/kernel/fpu/xstate.c | 13 +
arch/x86/kernel/fpu/xstate.h | 2 +
arch/x86/kernel/signal.c | 29 +-
arch/x86/kernel/signal_64.c | 6 +-
tools/testing/selftests/mm/Makefile | 2 +
tools/testing/selftests/mm/pkey-helpers.h | 11 +-
.../selftests/mm/pkey_sighandler_tests.c | 479 ++++++++++++++++++
tools/testing/selftests/mm/protection_keys.c | 10 -
10 files changed, 560 insertions(+), 21 deletions(-)
create mode 100644 tools/testing/selftests/mm/pkey_sighandler_tests.c
base-commit: 8400291e289ee6b2bf9779ff1c83a291501f017b
prerequisite-patch-id: 7b2144970da943b19b53baab525a0fc653fcd7b8
--
2.39.3
