[PATCH V8 00/28] Add new powerpc specific ELF core notes

From: Anshuman Khandual
Date: Tue May 19 2015 - 11:08:49 EST

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From: Anshuman Khandual <anshuman@xxxxxxxxxxxxxxxxxxxxx>

This patch series adds twelve new ELF core note sections which can
be used with existing ptrace request PTRACE_GETREGSET-SETREGSET for accessing
various transactional memory and other miscellaneous debug register sets on
powerpc platform.

Previous versions:
==================
RFC: https://lkml.org/lkml/2014/4/1/292
V1: https://lkml.org/lkml/2014/4/2/43
V2: https://lkml.org/lkml/2014/5/5/88
V3: https://lkml.org/lkml/2014/5/23/486
V4: https://lkml.org/lkml/2014/11/11/6
V5: https://lkml.org/lkml/2014/11/25/134
V6: https://lkml.org/lkml/2014/12/2/98
V7: https://lkml.org/lkml/2015/1/14/19

Changes in V8:
--------------
- Split the misc register set into individual ELF core notes
- Implemented support for VSX register set (on and off TM)
- Implemented support for EBB register set
- Implemented review comments on previous versions
- Some code re-arrangements, re-writes and documentation
- Added comprehensive list of test cases into selftests

Changes in V7:
--------------
- Fixed a config directive in the MISC code
- Merged the two gitignore patches into a single one

Changes in V6:
--------------
- Added two git ignore patches for powerpc selftests
- Re-formatted all in-code function definitions in kernel-doc format

Changes in V5:
--------------
- Changed flush_tmregs_to_thread, so not to take into account self tracing
- Dropped the 3rd patch in the series which had merged two functions
- Fixed one build problem for the misc debug register patch
- Accommodated almost all the review comments from Suka on the 6th patch
- Minor changes to the self test program
- Changed commit messages for some of the patches

Changes in V4:
--------------
- Added one test program into the powerpc selftest bucket in this regard
- Split the 2nd patch in the previous series into four different patches
- Accommodated most of the review comments on the previous patch series
- Added a patch to merge functions __switch_to_tm and tm_reclaim_task

Changes in V3:
--------------
- Added two new error paths in every TM related get/set functions when regset
support is not present on the system (ENODEV) or when the process does not
have any transaction active (ENODATA) in the context
- Installed the active hooks for all the newly added regset core note types

Changes in V2:
--------------
- Removed all the power specific ptrace requests corresponding to new NT_PPC_*
elf core note types. Now all the register sets can be accessed from ptrace
through PTRACE_GETREGSET/PTRACE_SETREGSET using the individual NT_PPC* core
note type instead
- Fixed couple of attribute values for REGSET_TM_CGPR register set
- Renamed flush_tmreg_to_thread as flush_tmregs_to_thread
- Fixed 32 bit checkpointed GPR support
- Changed commit messages accordingly

Test Result
-----------
ptrace-ebb PASS
ptrace-gpr PASS
ptrace-tm-gpr PASS
ptrace-tm-spd-gpr PASS
ptrace-tar FAIL
ptrace-tm-tar FAIL
ptrace-tm-spd-tar FAIL
ptrace-vsx PASS
ptrace-tm-vsx PASS
ptrace-tm-spd-vsx PASS
ptrace-tm-spr PASS

NOTE: The above three test case failures are due to PPR context save/restore
in various paths. Still continue to debug the issue.

Anshuman Khandual (28):
elf: Add powerpc specific core note sections
powerpc, process: Add the function flush_tmregs_to_thread
powerpc, ptrace: Enable in transaction NT_PRFPREG ptrace requests
powerpc, ptrace: Enable in transaction NT_PPC_VMX ptrace requests
powerpc, ptrace: Enable in transaction NT_PPC_VSX ptrace requests
powerpc, ptrace: Adapt gpr32_get, gpr32_set functions for transaction
powerpc, ptrace: Enable support for NT_PPC_CGPR
powerpc, ptrace: Enable support for NT_PPC_CFPR
powerpc, ptrace: Enable support for NT_PPC_CVMX
powerpc, ptrace: Enable support for NT_PPC_CVSX
powerpc, ptrace: Enable support for TM SPR state
powerpc, ptrace: Enable NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR
powerpc, ptrace: Enable support for NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCR
powerpc, ptrace: Enable support for EBB registers
selftests, powerpc: Move 'reg.h' file outside of 'ebb' sub directory
selftests, powerpc: Add more SPR numbers, TM & VMX instructions to 'reg.h'
selftests, powerpc: Add ptrace tests for EBB
selftests, powerpc: Add ptrace tests for GPR/FPR registers
selftests, powerpc: Add ptrace tests for GPR/FPR registers in TM
selftests, powerpc: Add ptrace tests for GPR/FPR registers in suspended TM
selftests, powerpc: Add ptrace tests for TAR, PPR, DSCR registers
selftests, powerpc: Add ptrace tests for TAR, PPR, DSCR in TM
selftests, powerpc: Add ptrace tests for TAR, PPR, DSCR in suspended TM
selftests, powerpc: Add ptrace tests for VSX, VMX registers
selftests, powerpc: Add ptrace tests for VSX, VMX registers in TM
selftests, powerpc: Add ptrace tests for VSX, VMX registers in suspended TM
selftests, powerpc: Add ptrace tests for TM SPR registers
selftests, powerpc: Add .gitignore file for ptrace executables

arch/powerpc/include/asm/switch_to.h | 8 +
arch/powerpc/include/uapi/asm/elf.h | 5 +
arch/powerpc/kernel/process.c | 20 +
arch/powerpc/kernel/ptrace.c | 1737 ++++++++++++++++++--
include/uapi/linux/elf.h | 12 +
tools/testing/selftests/powerpc/Makefile | 2 +-
tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 +-
tools/testing/selftests/powerpc/pmu/ebb/ebb.h | 2 +-
.../selftests/powerpc/pmu/ebb/ebb_handler.S | 2 +-
tools/testing/selftests/powerpc/pmu/ebb/reg.h | 49 -
.../selftests/powerpc/pmu/ebb/reg_access_test.c | 2 +-
tools/testing/selftests/powerpc/ptrace/.gitignore | 11 +
tools/testing/selftests/powerpc/ptrace/Makefile | 12 +
.../testing/selftests/powerpc/ptrace/ptrace-ebb.c | 144 ++
.../testing/selftests/powerpc/ptrace/ptrace-ebb.h | 98 ++
.../testing/selftests/powerpc/ptrace/ptrace-gpr.c | 191 +++
.../testing/selftests/powerpc/ptrace/ptrace-gpr.h | 73 +
.../testing/selftests/powerpc/ptrace/ptrace-tar.c | 151 ++
.../testing/selftests/powerpc/ptrace/ptrace-tar.h | 50 +
.../selftests/powerpc/ptrace/ptrace-tm-gpr.c | 287 ++++
.../selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c | 318 ++++
.../selftests/powerpc/ptrace/ptrace-tm-spd-tar.c | 184 +++
.../selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c | 211 +++
.../selftests/powerpc/ptrace/ptrace-tm-spr.c | 156 ++
.../selftests/powerpc/ptrace/ptrace-tm-tar.c | 169 ++
.../selftests/powerpc/ptrace/ptrace-tm-vsx.c | 195 +++
.../testing/selftests/powerpc/ptrace/ptrace-vsx.c | 138 ++
.../testing/selftests/powerpc/ptrace/ptrace-vsx.h | 83 +
tools/testing/selftests/powerpc/ptrace/ptrace.S | 403 +++++
tools/testing/selftests/powerpc/ptrace/ptrace.h | 765 +++++++++
tools/testing/selftests/powerpc/reg.h | 70 +
31 files changed, 5372 insertions(+), 178 deletions(-)
delete mode 100644 tools/testing/selftests/powerpc/pmu/ebb/reg.h
create mode 100644 tools/testing/selftests/powerpc/ptrace/.gitignore
create mode 100644 tools/testing/selftests/powerpc/ptrace/Makefile
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-ebb.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-ebb.h
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-gpr.h
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tar.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tar.h
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-vsx.c
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-vsx.h
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace.S
create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace.h
create mode 100644 tools/testing/selftests/powerpc/reg.h

--
2.1.0

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Next message: Anshuman Khandual: "[PATCH V8 07/28] powerpc, ptrace: Enable support for NT_PPC_CGPR"
Previous message: Mikko Perttunen: "Re: [PATCH v10 05/17] clk: tegra: Introduce ability for SoC-specific reset control callbacks"
Next in thread: Anshuman Khandual: "[PATCH V8 07/28] powerpc, ptrace: Enable support for NT_PPC_CGPR"
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