# git rev-parse -q --verify 3685a5b63db143f0beef3dead23cdd96a594b93b^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
remote: warning: multi-pack bitmap is missing required reverse index        
# git rev-parse -q --verify 3685a5b63db143f0beef3dead23cdd96a594b93b^{commit}
3685a5b63db143f0beef3dead23cdd96a594b93b
# git checkout -q -f -B kisskb 3685a5b63db143f0beef3dead23cdd96a594b93b
# git clean -qxdf
# < git log -1
# commit 3685a5b63db143f0beef3dead23cdd96a594b93b
# Author: Borislav Petkov (AMD) <bp@alien8.de>
# Date:   Wed Jul 5 00:19:51 2023 +0200
# 
#     kbuild: Enable -Wenum-conversion by default
#     
#     This diagnostic checks whether there is a type mismatch when
#     converting enums (assign an enum of type A to an enum of type B, for
#     example) and it caught a legit issue recently. The reason it didn't show
#     is because that warning is enabled only with -Wextra with GCC. Clang,
#     however, enables it by default.
#     
#     GCC folks were considering enabling it by default but it was too noisy
#     back then:
#     
#       https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78736
#     
#     Now that due to clang all those warnings have been fixed, enable it with
#     GCC too.
#     
#     allmodconfig tests done with: x86, arm{,64}, powerpc{,64}, riscv
#     crossbuilds.
#     
#     Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
#     Reviewed-by: Nathan Chancellor <nathan@kernel.org>
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /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 3685a5b63db143f0beef3dead23cdd96a594b93b
# make -s -j 40 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# < make -s -j 40 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 40 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 40 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/kbuild_powernv_defconfig_powerpc-gcc5
# Build took: 0:01:39.818574