From: Benjamin Gray <bgray@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Benjamin Gray <bgray@linux.ibm.com>,
ajd@linux.ibm.com, npiggin@gmail.com, ruscur@russell.cc
Subject: [PATCH v3 00/12] Add static DEXCR support
Date: Fri, 19 May 2023 15:02:24 +1000 [thread overview]
Message-ID: <20230519050236.144847-1-bgray@linux.ibm.com> (raw)
The DEXCR is a SPR that allows control over various execution
'aspects', such as indirect branch prediction and enabling the
hashst/hashchk instructions. Further details are in ISA 3.1B
Book 3 chapter 9.
This series adds static (compile time) support for initialising
the DEXCR, and basic HASHKEYR bookkeeping.
v3: * Address Russell's comments
v2: * Add ptrace/coredump support
Previous versions:
v2: https://lore.kernel.org/all/20230330055040.434133-1-bgray@linux.ibm.com/
v1: https://lore.kernel.org/all/20230322054612.1340573-1-bgray@linux.ibm.com/
RFC: https://lore.kernel.org/all/20221128024458.46121-1-bgray@linux.ibm.com/
Benjamin Gray (12):
powerpc/book3s: Add missing <linux/sched.h> include
powerpc/ptrace: Add missing <linux/regset.h> include
powerpc/dexcr: Add initial Dynamic Execution Control Register (DEXCR)
support
powerpc/dexcr: Handle hashchk exception
powerpc/dexcr: Support userspace ROP protection
powerpc/dexcr: Support custom default DEXCR value
powerpc/ptrace: Expose DEXCR and HDEXCR registers to ptrace
powerpc/ptrace: Expose HASHKEYR register to ptrace
Documentation: Document PowerPC kernel DEXCR interface
selftests/powerpc: Add more utility macros
selftests/powerpc/dexcr: Add hashst/hashchk test
selftests/powerpc/dexcr: Add DEXCR status utility lsdexcr
Documentation/powerpc/dexcr.rst | 58 +++++
Documentation/powerpc/index.rst | 1 +
arch/powerpc/Kconfig | 14 ++
arch/powerpc/include/asm/book3s/64/kexec.h | 5 +
arch/powerpc/include/asm/book3s/64/kup.h | 1 +
arch/powerpc/include/asm/cputable.h | 4 +-
arch/powerpc/include/asm/ppc-opcode.h | 1 +
arch/powerpc/include/asm/processor.h | 1 +
arch/powerpc/include/asm/reg.h | 10 +
arch/powerpc/include/uapi/asm/elf.h | 2 +
arch/powerpc/kernel/cpu_setup_power.c | 9 +
arch/powerpc/kernel/process.c | 17 ++
arch/powerpc/kernel/prom.c | 1 +
arch/powerpc/kernel/ptrace/ptrace-decl.h | 6 +
arch/powerpc/kernel/ptrace/ptrace-view.c | 67 +++++-
arch/powerpc/kernel/traps.c | 16 ++
include/uapi/linux/elf.h | 2 +
tools/testing/selftests/powerpc/Makefile | 1 +
.../selftests/powerpc/dexcr/.gitignore | 2 +
.../testing/selftests/powerpc/dexcr/Makefile | 9 +
tools/testing/selftests/powerpc/dexcr/dexcr.c | 132 ++++++++++
tools/testing/selftests/powerpc/dexcr/dexcr.h | 49 ++++
.../selftests/powerpc/dexcr/hashchk_test.c | 227 ++++++++++++++++++
.../testing/selftests/powerpc/dexcr/lsdexcr.c | 141 +++++++++++
tools/testing/selftests/powerpc/include/reg.h | 4 +
.../testing/selftests/powerpc/include/utils.h | 31 ++-
.../powerpc/pmu/sampling_tests/misc.h | 2 -
tools/testing/selftests/powerpc/utils.c | 24 ++
28 files changed, 832 insertions(+), 5 deletions(-)
create mode 100644 Documentation/powerpc/dexcr.rst
create mode 100644 tools/testing/selftests/powerpc/dexcr/.gitignore
create mode 100644 tools/testing/selftests/powerpc/dexcr/Makefile
create mode 100644 tools/testing/selftests/powerpc/dexcr/dexcr.c
create mode 100644 tools/testing/selftests/powerpc/dexcr/dexcr.h
create mode 100644 tools/testing/selftests/powerpc/dexcr/hashchk_test.c
create mode 100644 tools/testing/selftests/powerpc/dexcr/lsdexcr.c
base-commit: 547124f858ea52b2f7e58e8c0d39170a9fa66b4b
--
2.40.1
next reply other threads:[~2023-05-19 5:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-19 5:02 Benjamin Gray [this message]
2023-05-19 5:02 ` [PATCH v3 01/12] powerpc/book3s: Add missing <linux/sched.h> include Benjamin Gray
2023-05-23 6:45 ` Andrew Donnellan
2023-05-19 5:02 ` [PATCH v3 02/12] powerpc/ptrace: Add missing <linux/regset.h> include Benjamin Gray
2023-05-23 6:51 ` Andrew Donnellan
2023-05-19 5:02 ` [PATCH v3 03/12] powerpc/dexcr: Add initial Dynamic Execution Control Register (DEXCR) support Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 04/12] powerpc/dexcr: Handle hashchk exception Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 05/12] powerpc/dexcr: Support userspace ROP protection Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 06/12] powerpc/dexcr: Support custom default DEXCR value Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 07/12] powerpc/ptrace: Expose DEXCR and HDEXCR registers to ptrace Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 08/12] powerpc/ptrace: Expose HASHKEYR register " Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 09/12] Documentation: Document PowerPC kernel DEXCR interface Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 10/12] selftests/powerpc: Add more utility macros Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 11/12] selftests/powerpc/dexcr: Add hashst/hashchk test Benjamin Gray
2023-05-19 5:02 ` [PATCH v3 12/12] selftests/powerpc/dexcr: Add DEXCR status utility lsdexcr Benjamin Gray
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