# git rev-parse -q --verify 7b56fbd83e261484da43f04090bce07570bd117f^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 7b56fbd83e261484da43f04090bce07570bd117f^{commit}
7b56fbd83e261484da43f04090bce07570bd117f
# git checkout -q -f -B kisskb 7b56fbd83e261484da43f04090bce07570bd117f
# git clean -qxdf
# < git log -1
# commit 7b56fbd83e261484da43f04090bce07570bd117f
# Merge: 4312e0e8d3ea cb05143bdf42
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Nov 1 11:21:26 2020 -0800
# 
#     Merge tag 'x86-urgent-2020-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "Three fixes all related to #DB:
#     
#        - Handle the BTF bit correctly so it doesn't get lost due to a kernel
#          #DB
#     
#        - Only clear and set the virtual DR6 value used by ptrace on user
#          space triggered #DB. A kernel #DB must leave it alone to ensure
#          data consistency for ptrace.
#     
#        - Make the bitmasking of the virtual DR6 storage correct so it does
#          not lose DR_STEP"
#     
#     * tag 'x86-urgent-2020-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/debug: Fix DR_STEP vs ptrace_get_debugreg(6)
#       x86/debug: Only clear/set ->virtual_dr6 for userspace #DB
#       x86/debug: Fix BTF handling
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 7b56fbd83e261484da43f04090bce07570bd117f
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_assabet_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  assabet_defconfig
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_assabet_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  help
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_assabet_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  olddefconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_assabet_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
Completed OK
# rm -rf /kisskb/build/linus_assabet_defconfig_arm-gcc4.9
# Build took: 0:00:40.872925