# git rev-parse -q --verify a99efa00891b66405ebd25e49868efc701fe1546^{commit}
a99efa00891b66405ebd25e49868efc701fe1546
already have revision, skipping fetch
# git checkout -q -f -B kisskb a99efa00891b66405ebd25e49868efc701fe1546
# git clean -qxdf
# < git log -1
# commit a99efa00891b66405ebd25e49868efc701fe1546
# Merge: d75663868d60 1833e327a5ea
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Dec 29 10:01:27 2019 -0800
# 
#     Merge tag 'riscv/for-v5.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
#     
#     Pull RISC-V fixes from Paul Walmsley:
#      "One important fix for RISC-V:
#     
#        - Redirect any incoming syscall with an ID less than -1 to
#          sys_ni_syscall, rather than allowing them to fall through into the
#          syscall handler.
#     
#       and two minor build fixes:
#     
#        - Export __asm_copy_{from,to}_user() from where they are defined.
#          This fixes a build error triggered by some randconfigs.
#     
#        - Export flush_icache_all(). I'd resisted this before, since
#          historically we didn't want modules to be able to flush the I$
#          directly; but apparently everyone else is doing it now"
#     
#     * tag 'riscv/for-v5.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
#       riscv: export flush_icache_all to modules
#       riscv: reject invalid syscalls below -1
#       riscv: fix compile failure with EXPORT_SYMBOL() & !MMU
# < /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 a99efa00891b66405ebd25e49868efc701fe1546
# < make -s -j 24 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 24 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: 0:00:49.385645