# git rev-parse -q --verify e33416fca8a2313b8650bd5807aaf34354d39a4c^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
# git rev-parse -q --verify e33416fca8a2313b8650bd5807aaf34354d39a4c^{commit}
e33416fca8a2313b8650bd5807aaf34354d39a4c
# git checkout -q -f -B kisskb e33416fca8a2313b8650bd5807aaf34354d39a4c
# git clean -qxdf
# < git log -1
# commit e33416fca8a2313b8650bd5807aaf34354d39a4c
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Feb 2 21:27:35 2023 +1100
# 
#     powerpc: Don't select ARCH_WANTS_NO_INSTR
#     
#     Commit 41b7a347bf14 ("powerpc: Book3S 64-bit outline-only KASAN
#     support") added a select of ARCH_WANTS_NO_INSTR, because it also added
#     some uses of noinstr. However noinstr is always defined, regardless of
#     ARCH_WANTS_NO_INSTR, so there's no need to select it just for that.
#     
#     As PeterZ says [1]:
#       Note that by selecting ARCH_WANTS_NO_INSTR you effectively state to
#       abide by its rules.
#     
#     As of now the powerpc code does not abide by those rules, and trips some
#     new warnings added by Peter in linux-next.
#     
#     So until the code can be fixed to avoid those warnings, disable
#     ARCH_WANTS_NO_INSTR.
#     
#     Note that ARCH_WANTS_NO_INSTR is also used to gate building KCOV and
#     parts of KCSAN. However none of the noinstr annotations in powerpc were
#     added for KCOV or KCSAN, instead instrumentation is blocked at the file
#     level using KCOV_INSTRUMENT_foo.o := n.
#     
#     [1]: https://lore.kernel.org/linuxppc-dev/Y9t6yoafrO5YqVgM@hirez.programming.kicks-ass.net
#     
#     Reported-by: Sachin Sant <sachinp@linux.ibm.com>
#     Suggested-by: Peter Zijlstra <peterz@infradead.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /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 e33416fca8a2313b8650bd5807aaf34354d39a4c
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64le_defconfig
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
arch/powerpc/kernel/head_64.o: warning: objtool: end_first_256B(): can't find starting instruction
arch/powerpc/kernel/optprobes_head.o: warning: objtool: optprobe_template_end(): can't find starting instruction
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5
# Build took: 0:02:29.211786