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Message-Id: <1432048104-4695-1-git-send-email-khandual@linux.vnet.ibm.com> Date: Tue, 19 May 2015 20:37:56 +0530 From: Anshuman Khandual <khandual@...ux.vnet.ibm.com> To: linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org Cc: peterz@...radead.org, akpm@...ux-foundation.org, tglx@...utronix.de, james.hogan@...tec.com, avagin@...nvz.org, Paul.Clothier@...tec.com, palves@...hat.com, oleg@...hat.com, dhowells@...hat.com, davej@...hat.com, davem@...emloft.net, mikey@...ling.org, benh@...nel.crashing.org, sukadev@...ux.vnet.ibm.com, mpe@...erman.id.au, sam.bobroff@....ibm.com, kirjanov@...il.com, shuahkh@....samsung.com, Ulrich.Weigand@...ibm.com, emachado@...ux.vnet.ibm.com, nacc@...ux.vnet.ibm.com Subject: [PATCH V8 00/28] Add new powerpc specific ELF core notes From: Anshuman Khandual <anshuman@...alhost.localdomain> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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