# git rev-parse -q --verify cedd76eece11cab713330980da3fc04bd2462e86^{commit}
cedd76eece11cab713330980da3fc04bd2462e86
already have revision, skipping fetch
# 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-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 cedd76eece11cab713330980da3fc04bd2462e86
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_83xx_mpc837x_rdb_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  83xx/mpc837x_rdb_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_83xx_mpc837x_rdb_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x74acd0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x800000)
Image Name:   Linux-5.10.0-rc2-gcedd76eece11
Created:      Tue Nov 24 23:36:22 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3397007 Bytes = 3317.39 KiB = 3.24 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-next_83xx_mpc837x_rdb_defconfig_powerpc-gcc5
# Build took: 0:00:31.935246