# git rev-parse -q --verify f306b90c69ce3994bb8046b54374a90a27f66be6^{commit}
f306b90c69ce3994bb8046b54374a90a27f66be6
already have revision, skipping fetch
# git checkout -q -f -B kisskb f306b90c69ce3994bb8046b54374a90a27f66be6
# git clean -qxdf
# < git log -1
# commit f306b90c69ce3994bb8046b54374a90a27f66be6
# Merge: d8e988b62f94 c9871c800f65
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Sep 12 12:42:51 2021 -0700
# 
#     Merge tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull CPU hotplug updates from Thomas Gleixner:
#      "Updates for the SMP and CPU hotplug:
#     
#        - Remove DEFINE_SMP_CALL_CACHE_FUNCTION() which is a left over of the
#          original hotplug code and now causing trouble with the ARM64 cache
#          topology setup due to the pointless SMP function call.
#     
#          It's not longer required as the hotplug callbacks are guaranteed to
#          be invoked on the upcoming CPU.
#     
#        - Remove the deprecated and now unused CPU hotplug functions
#     
#        - Rewrite the CPU hotplug API documentation"
#     
#     * tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       Documentation: core-api/cpuhotplug: Rewrite the API section
#       cpu/hotplug: Remove deprecated CPU-hotplug functions.
#       thermal: Replace deprecated CPU-hotplug functions.
#       drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 f306b90c69ce3994bb8046b54374a90a27f66be6
# < make -s -j 8 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# < make -s -j 8 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 8 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
# make -s -j 8 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/x86/um/Makefile:44: FORCE prerequisite is missing
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:01:14.981895