# git rev-parse -q --verify a5f2bd479f58f171a16a9a4f3b4e748ab3057c0f^{commit}
a5f2bd479f58f171a16a9a4f3b4e748ab3057c0f
already have revision, skipping fetch
# git checkout -q -f -B kisskb a5f2bd479f58f171a16a9a4f3b4e748ab3057c0f
# git clean -qxdf
# < git log -1
# commit a5f2bd479f58f171a16a9a4f3b4e748ab3057c0f
# Merge: 89261c570213 930e12992ed3
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Dec 26 11:14:52 2018 -0800
# 
#     Merge branch 'parisc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
#     
#     Pull parisc updates from Helge Deller:
#      "The major change in this patchset is the new system call table
#       generation support from Firoz Khan"
#     
#     * 'parisc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
#       parisc: syscalls: ignore nfsservctl for other architectures
#       parisc: generate uapi header and system call table files
#       parisc: add system call table generation support
#       parisc: remove __NR_Linux from uapi header file.
#       parisc: add __NR_syscalls along with __NR_Linux_syscalls
#       parisc: move __IGNORE* entries to non uapi header
#       parisc: Fix HP SDC hpa address output
#       parisc: Fix serio address output
#       parisc: Split out alternative live patching code
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-ld --version
# < git log --format=%s --max-count=1 a5f2bd479f58f171a16a9a4f3b4e748ab3057c0f
# < make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  defconfig
drivers/staging/mt7621-dts/Kconfig:4:warning: 'BUILTIN_DTB' has wrong type. 'select' only accept arguments of bool and tristate type
# make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
<stdin>:1333:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa
# Build took: 0:00:24.611541