# git gc
# git rev-parse -q --verify cedd76eece11cab713330980da3fc04bd2462e86^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
# git rev-parse -q --verify cedd76eece11cab713330980da3fc04bd2462e86^{commit}
cedd76eece11cab713330980da3fc04bd2462e86
# git checkout -q -f -B kisskb cedd76eece11cab713330980da3fc04bd2462e86
# git clean -qxdf
# < git log -1
# commit cedd76eece11cab713330980da3fc04bd2462e86
# Author: Bill Wendling <morbo@google.com>
# Date:   Fri Nov 20 14:40:34 2020 -0800
# 
#     powerpc: Work around inline asm issues in alternate feature sections
#     
#     The clang toolchain treats inline assembly a bit differently than
#     straight assembly code. In particular, inline assembly doesn't have
#     the complete context available to resolve expressions. This is
#     intentional to avoid divergence in the resulting assembly code.
#     
#     We can work around this issue by borrowing a workaround done for ARM,
#     i.e. not directly testing the labels themselves, but by moving the
#     current output pointer by a value that should always be zero. If this
#     value is not null, then we will trigger a backward move, which is
#     explicitly forbidden.
#     
#     Signed-off-by: Bill Wendling <morbo@google.com>
#     [mpe: Put it in a macro and only do the workaround for clang]
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20201120224034.191382-4-morbo@google.com
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 cedd76eece11cab713330980da3fc04bd2462e86
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.9
# Build took: 0:04:58.141100