# git rev-parse -q --verify f566e1fbadb686e28f1c307e356114b2865ef588^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# git rev-parse -q --verify f566e1fbadb686e28f1c307e356114b2865ef588^{commit}
f566e1fbadb686e28f1c307e356114b2865ef588
# git checkout -q -f -B kisskb f566e1fbadb686e28f1c307e356114b2865ef588
# git clean -qxdf
# < git log -1
# commit f566e1fbadb686e28f1c307e356114b2865ef588
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Wed Feb 5 15:51:52 2020 +0900
# 
#     kbuild: make multiple directory targets work
#     
#     Currently, the single-target build does not work when two
#     or more sub-directories are given:
#     
#       $ make fs/ kernel/ lib/
#         CALL    scripts/checksyscalls.sh
#         CALL    scripts/atomic/check-atomics.sh
#         DESCEND  objtool
#       make[2]: Nothing to be done for 'kernel/'.
#       make[2]: Nothing to be done for 'fs/'.
#       make[2]: Nothing to be done for 'lib/'.
#     
#     Make it work properly.
#     
#     Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 f566e1fbadb686e28f1c307e356114b2865ef588
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  defconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:35: LSE atomics not supported by binutils
In file included from /kisskb/src/include/linux/rwsem.h:16:0,
                 from /kisskb/src/include/linux/notifier.h:15,
                 from /kisskb/src/include/linux/clk.h:14,
                 from /kisskb/src/drivers/tty/serial/sh-sci.c:20:
/kisskb/src/drivers/tty/serial/sh-sci.c: In function 'sci_dma_rx_submit':
/kisskb/src/include/linux/spinlock.h:288:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized]
   _raw_spin_unlock_irqrestore(lock, flags); \
   ^
/kisskb/src/drivers/tty/serial/sh-sci.c:1348:16: note: 'flags' was declared here
  unsigned long flags;
                ^
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr':
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized]
   pd->msg->buf[real_pos] = data;
                          ^
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:372:16: note: 'data' was declared here
  unsigned char data;
                ^
Completed OK
# rm -rf /kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4
# Build took: 0:06:05.499253