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Message-ID: <57062722.5090706@linux.vnet.ibm.com> Date: Thu, 7 Apr 2016 11:23:46 +0200 From: Laurent Dufour <ldufour@...ux.vnet.ibm.com> To: Anshuman Khandual <khandual@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org, Michael Ellerman <mpe@...erman.id.au> Cc: shuahkh@....samsung.com, mikey@...ling.org, james.hogan@...tec.com, avagin@...nvz.org, Paul.Clothier@...tec.com, peterz@...radead.org, palves@...hat.com, emachado@...ux.vnet.ibm.com, oleg@...hat.com, davem@...emloft.net, dhowells@...hat.com, Ulrich.Weigand@...ibm.com, kirjanov@...il.com, davej@...hat.com, akpm@...ux-foundation.org, sukadev@...ux.vnet.ibm.com, tglx@...utronix.de, sam.bobroff@....ibm.com Subject: Re: [PATCH V10 00/28] Add new powerpc specific ELF core notes On 16/02/2016 09:59, Anshuman Khandual wrote: > 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. Hi Michael, This series is required to handle TM state in CRIU. Is there a chance to get it upstream soon ? Thanks, Laurent. > > Test Result (All tests pass on both BE and LE) > ---------------------------------------------- > ptrace-ebb PASS > ptrace-gpr PASS > ptrace-tm-gpr PASS > ptrace-tm-spd-gpr PASS > ptrace-tar PASS > ptrace-tm-tar PASS > ptrace-tm-spd-tar PASS > ptrace-vsx PASS > ptrace-tm-vsx PASS > ptrace-tm-spd-vsx PASS > ptrace-tm-spr PASS > > 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 > V8: https://lkml.org/lkml/2015/5/19/700 > V9: https://lkml.org/lkml/2015/10/8/522 > > Changes in V10: > --------------- > - Rebased against the latest mainline > - Fixed couple of build failures in the test cases related to aux vector > > Changes in V9: > -------------- > - Fixed static build check failure after tm_orig_msr got dropped > - Fixed asm volatile construct for used registers set > - Fixed EBB, VSX, VMX tests for LE > - Fixed TAR test which was failing because of system calls > - Added checks for PPC_FEATURE2_HTM aux feature in the tests > - Fixed copyright statements > > 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 > > > 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 | 6 + > arch/powerpc/kernel/process.c | 20 + > arch/powerpc/kernel/ptrace.c | 1737 ++++++++++++++++++-- > include/uapi/linux/elf.h | 12 + > tools/testing/selftests/powerpc/Makefile | 3 +- > 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 | 150 ++ > .../testing/selftests/powerpc/ptrace/ptrace-ebb.h | 103 ++ > .../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 | 288 ++++ > .../selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c | 319 ++++ > .../selftests/powerpc/ptrace/ptrace-tm-spd-tar.c | 184 +++ > .../selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c | 212 +++ > .../selftests/powerpc/ptrace/ptrace-tm-spr.c | 157 ++ > .../selftests/powerpc/ptrace/ptrace-tm-tar.c | 170 ++ > .../selftests/powerpc/ptrace/ptrace-tm-vsx.c | 196 +++ > .../testing/selftests/powerpc/ptrace/ptrace-vsx.c | 138 ++ > .../testing/selftests/powerpc/ptrace/ptrace-vsx.h | 104 ++ > tools/testing/selftests/powerpc/ptrace/ptrace.S | 396 +++++ > tools/testing/selftests/powerpc/ptrace/ptrace.h | 766 +++++++++ > tools/testing/selftests/powerpc/reg.h | 70 + > 31 files changed, 5406 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 >
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