# git rev-parse -q --verify b19e8c68470385dd2c5440876591fddb02c8c402^{commit}
b19e8c68470385dd2c5440876591fddb02c8c402
already have revision, skipping fetch
# git checkout -q -f -B kisskb b19e8c68470385dd2c5440876591fddb02c8c402
# git clean -qxdf
# < git log -1
# commit b19e8c68470385dd2c5440876591fddb02c8c402
# Merge: 1d40890aae812 d91771848f0ae
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu Feb 13 14:36:57 2020 -0800
# 
#     Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
#     
#     Pull arm64 fixes from Will Deacon:
#      "Summary below, but it's all reasonably straightforward. There are some
#       more fixes on the horizon, but nothing disastrous yet.
#     
#       Summary:
#     
#        - Fix build when KASLR is enabled but CONFIG_ARCH_RANDOM is not set
#     
#        - Fix context-switching of SSBS state on systems that implement it
#     
#        - Fix spinlock compiler warning introduced during the merge window
#     
#        - Fix incorrect header inclusion (linux/clk-provider.h)
#     
#        - Use SYSCTL_{ZERO,ONE} instead of rolling our own static variables
#     
#        - Don't scream if optional SMMUv3 PMU irq is missing
#     
#        - Remove some unused function prototypes"
#     
#     * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
#       arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h>
#       arm64: Fix CONFIG_ARCH_RANDOM=n build
#       perf/smmuv3: Use platform_get_irq_optional() for wired interrupt
#       arm64/spinlock: fix a -Wunused-function warning
#       arm64: ssbs: Fix context-switch when SSBS is present on all CPUs
#       arm64: use shared sysctl constants
#       arm64: Drop do_el0_ia_bp_hardening() & do_sp_pc_abort() declarations
# < /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 b19e8c68470385dd2c5440876591fddb02c8c402
# < make -s -j 10 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 10 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/um/os-Linux/signal.c: In function 'sig_handler_common':
/kisskb/src/arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
/kisskb/src/arch/um/os-Linux/signal.c: In function 'timer_real_alarm_handler':
/kisskb/src/arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:01:21.679654