# git gc
# git rev-parse -q --verify 304040fb4909f7771caf6f8e8c61dbe51c93505a^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 304040fb4909f7771caf6f8e8c61dbe51c93505a^{commit}
304040fb4909f7771caf6f8e8c61dbe51c93505a
# git checkout -q -f -B kisskb 304040fb4909f7771caf6f8e8c61dbe51c93505a
# git clean -qxdf
# < git log -1
# commit 304040fb4909f7771caf6f8e8c61dbe51c93505a
# Merge: c13f946bf1ef 8b7216439e2e
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Oct 16 09:14:55 2021 -0700
# 
#     Merge tag 's390-5.15-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
#     
#     Pull s390 fixes from Vasily Gorbik:
#     
#      - Maintainers and reviewers changes:
#     
#         * Cornelia decided to free up her time and step down from vfio-ccw
#           maintainer and s390 kvm reviewer duties
#     
#         * Add Alexander Gordeev as s390 arch code reviewer
#     
#      - Fix broken strrchr implementation
#     
#     * tag 's390-5.15-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
#       s390: add Alexander Gordeev as reviewer
#       s390: fix strrchr() implementation
#       vfio-ccw: step down as maintainer
#       KVM: s390: remove myself as reviewer
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 304040fb4909f7771caf6f8e8c61dbe51c93505a
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:5548:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11
# Build took: 0:11:19.128320