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Message-ID: <ae669ab4-681b-1a0d-3bbc-4fdf13b501a0@csgroup.eu>
Date:   Fri, 8 Jul 2022 15:06:43 +0000
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Sathvika Vasireddy <sv@...ux.ibm.com>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
CC:     "jpoimboe@...hat.com" <jpoimboe@...hat.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "aik@...abs.ru" <aik@...abs.ru>,
        "mpe@...erman.id.au" <mpe@...erman.id.au>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "naveen.n.rao@...ux.vnet.ibm.com" <naveen.n.rao@...ux.vnet.ibm.com>,
        "mbenes@...e.cz" <mbenes@...e.cz>,
        "benh@...nel.crashing.org" <benh@...nel.crashing.org>,
        "paulus@...ba.org" <paulus@...ba.org>
Subject: Re: [RFC PATCH v3 00/12] objtool: Enable and implement --mcount
 option on powerpc



Le 24/06/2022 à 20:32, Sathvika Vasireddy a écrit :
> These patches are rebased on top of objtool/core
> branch of the tip tree, and are tested on
> ppc64le with ppc64le_defconfig.

Seems like objtool/core has been merged in 5.19. I was able to apply 
your series on top of powerpc/merge branch. Only a small conflict with 
patch "objtool: Add --mnop as an option to --mcount" because of commit 
b42d23065024 ("kbuild: factor out the common objtool arguments")

> 
> Christophe Leroy (3):
>    objtool: Fix SEGFAULT
>    objtool: Use target file endianness instead of a compiled constant
>    objtool: Use target file class size instead of a compiled constant
> 
> Sathvika Vasireddy(9):
>    objtool: Add --mnop as an option to --mcount
>    powerpc: Skip objtool from running on VDSO files
>    objtool: Read special sections with alts only when specific options are selected
>    objtool: Use macros to define arch specific reloc types
>    objtool: Add arch specific function arch_ftrace_match()
>    objtool/powerpc: Enable objtool to be built on ppc
>    objtool/powerpc: Add --mcount specific implementation
>    powerpc: Remove unreachable() from WARN_ON()
>    objtool/powerpc: Fix unannotated intra-function call warnings
> 
>   Makefile                                      |  4 +-
>   arch/powerpc/Kconfig                          |  2 +
>   arch/powerpc/include/asm/bug.h                |  1 -
>   arch/powerpc/kernel/entry_64.S                |  2 +
>   arch/powerpc/kernel/exceptions-64s.S          |  7 +-
>   arch/powerpc/kernel/head_64.S                 |  7 +-
>   arch/powerpc/kernel/misc_64.S                 |  4 +-
>   arch/powerpc/kernel/vdso/Makefile             |  2 +
>   arch/powerpc/kernel/vector.S                  |  4 +-
>   arch/powerpc/kvm/book3s_hv_interrupts.S       |  4 +-
>   arch/powerpc/kvm/book3s_hv_rmhandlers.S       | 25 +++--
>   arch/x86/Kconfig                              |  1 +
>   scripts/Makefile.build                        |  1 +
>   tools/objtool/arch/powerpc/Build              |  2 +
>   tools/objtool/arch/powerpc/decode.c           | 96 +++++++++++++++++++
>   .../arch/powerpc/include/arch/cfi_regs.h      | 11 +++
>   tools/objtool/arch/powerpc/include/arch/elf.h | 10 ++
>   .../arch/powerpc/include/arch/special.h       | 21 ++++
>   tools/objtool/arch/powerpc/special.c          | 19 ++++
>   tools/objtool/arch/x86/decode.c               |  8 ++
>   tools/objtool/arch/x86/include/arch/elf.h     |  2 +
>   .../arch/x86/include/arch/endianness.h        |  9 --
>   tools/objtool/builtin-check.c                 | 14 +++
>   tools/objtool/check.c                         | 51 +++++-----
>   tools/objtool/elf.c                           |  8 +-
>   tools/objtool/include/objtool/arch.h          |  2 +
>   tools/objtool/include/objtool/builtin.h       |  1 +
>   tools/objtool/include/objtool/elf.h           |  8 ++
>   tools/objtool/include/objtool/endianness.h    | 32 +++----
>   tools/objtool/orc_dump.c                      | 11 ++-
>   tools/objtool/orc_gen.c                       |  4 +-
>   tools/objtool/special.c                       |  3 +-
>   32 files changed, 305 insertions(+), 71 deletions(-)
>   create mode 100644 tools/objtool/arch/powerpc/Build
>   create mode 100644 tools/objtool/arch/powerpc/decode.c
>   create mode 100644 tools/objtool/arch/powerpc/include/arch/cfi_regs.h
>   create mode 100644 tools/objtool/arch/powerpc/include/arch/elf.h
>   create mode 100644 tools/objtool/arch/powerpc/include/arch/special.h
>   create mode 100644 tools/objtool/arch/powerpc/special.c
>   delete mode 100644 tools/objtool/arch/x86/include/arch/endianness.h
> 

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