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    SubjectRe: [PATCH 3/3] powerpc/vdso: Merge vdso64 and vdso32 into a single directory
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    Le 22/12/2021 à 10:25, kernel test robot a écrit :
    > Hi Christophe,
    >
    > I love your patch! Yet something to improve:
    >
    > [auto build test ERROR on powerpc/next]
    > [also build test ERROR on v5.16-rc6 next-20211221]
    > [If your patch is applied to the wrong git tree, kindly drop us a note.
    > And when submitting patch, we suggest to use '--base' as documented in
    > https://git-scm.com/docs/git-format-patch]
    >
    > url: https://github.com/0day-ci/linux/commits/Christophe-Leroy/powerpc-vdso-augment-VDSO32-functions-to-support-64-bits-build/20211222-021033
    > base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
    > config: powerpc-randconfig-r023-20211222 (https://download.01.org/0day-ci/archive/20211222/202112221723.qyvrCJHe-lkp@intel.com/config)
    > compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project de4e0195ae1c39f1c3b07834b8e32c113f4f20eb)
    > reproduce (this is a W=1 build):
    > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
    > chmod +x ~/bin/make.cross
    > # install powerpc cross compiling tool for clang build
    > # apt-get install binutils-powerpc-linux-gnu
    > # https://github.com/0day-ci/linux/commit/16137812dbb55d25ebe3962d5fb7486cb5b43311
    > git remote add linux-review https://github.com/0day-ci/linux
    > git fetch --no-tags linux-review Christophe-Leroy/powerpc-vdso-augment-VDSO32-functions-to-support-64-bits-build/20211222-021033
    > git checkout 16137812dbb55d25ebe3962d5fb7486cb5b43311
    > # save the config file to linux build tree
    > mkdir build_dir
    > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc prepare
    >
    > If you fix the issue, kindly add following tag as appropriate
    > Reported-by: kernel test robot <lkp@intel.com>
    >
    > All errors (new ones prefixed by >>):
    >
    > <stdin>:1559:2: warning: syscall futex_waitv not implemented [-W#warnings]
    > #warning syscall futex_waitv not implemented
    > ^
    > 1 warning generated.
    >>> arch/powerpc/kernel/vdso/gettimeofday.S:75:8: error: unsupported directive '.stabs'
    > .stabs "_restgpr_31_x:F-1",36,0,0,_restgpr_31_x; .globl _restgpr_31_x; _restgpr_31_x:
    > ^
    > arch/powerpc/kernel/vdso/gettimeofday.S:76:8: error: unsupported directive '.stabs'
    > .stabs "_rest32gpr_31_x:F-1",36,0,0,_rest32gpr_31_x; .globl _rest32gpr_31_x; _rest32gpr_31_x:

    This problem is unrelated to this patch, you can see below it is from
    2021-03-09, and it isn't even introduced by that commit but only by the
    fact that it uses _GLOBAL() which has existed for years.

    Anyway, there is already a patch to fix it at
    https://patchwork.ozlabs.org/project/linuxppc-dev/patch/68932ec2ba6b868d35006b96e90f0890f3da3c05.1638273868.git.christophe.leroy@csgroup.eu/

    > ^
    > make[2]: *** [arch/powerpc/kernel/vdso/Makefile:71: arch/powerpc/kernel/vdso/gettimeofday-32.o] Error 1
    > make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
    > make[1]: *** [arch/powerpc/Makefile:421: vdso_prepare] Error 2
    > make[1]: Target 'prepare' not remade because of errors.
    > make: *** [Makefile:219: __sub-make] Error 2
    > make: Target 'prepare' not remade because of errors.
    >
    >
    > vim +75 arch/powerpc/kernel/vdso/gettimeofday.S
    >
    > 08c18b63d9656e arch/powerpc/kernel/vdso32/gettimeofday.S Christophe Leroy 2021-03-09 70
    > 08c18b63d9656e arch/powerpc/kernel/vdso32/gettimeofday.S Christophe Leroy 2021-03-09 71 /* Routines for restoring integer registers, called by the compiler. */
    > 08c18b63d9656e arch/powerpc/kernel/vdso32/gettimeofday.S Christophe Leroy 2021-03-09 72 /* Called with r11 pointing to the stack header word of the caller of the */
    > 08c18b63d9656e arch/powerpc/kernel/vdso32/gettimeofday.S Christophe Leroy 2021-03-09 73 /* function, just beyond the end of the integer restore area. */
    > 11f0a078a8b6be arch/powerpc/kernel/vdso32/gettimeofday.S Christophe Leroy 2021-12-21 74 #ifndef __powerpc64__
    > 08c18b63d9656e arch/powerpc/kernel/vdso32/gettimeofday.S Christophe Leroy 2021-03-09 @75 _GLOBAL(_restgpr_31_x)
    >
    > ---
    > 0-DAY CI Kernel Test Service, Intel Corporation
    > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
    >
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