# git rev-parse -q --verify ab851d49f6bfc781edd8bd44c72ec1e49211670b^{commit}
ab851d49f6bfc781edd8bd44c72ec1e49211670b
already have revision, skipping fetch
# git checkout -q -f -B kisskb ab851d49f6bfc781edd8bd44c72ec1e49211670b
# git clean -qxdf
# < git log -1
# commit ab851d49f6bfc781edd8bd44c72ec1e49211670b
# Merge: 1d87200446f1 e3cb0c7102f0
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Nov 26 11:12:02 2019 -0800
# 
#     Merge branch 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 iopl updates from Ingo Molnar:
#      "This implements a nice simplification of the iopl and ioperm code that
#       Thomas Gleixner discovered: we can implement the IO privilege features
#       of the iopl system call by using the IO permission bitmap in
#       permissive mode, while trapping CLI/STI/POPF/PUSHF uses in user-space
#       if they change the interrupt flag.
#     
#       This implements that feature, with testing facilities and related
#       cleanups"
#     
#     [ "Simplification" may be an over-statement. The main goal is to avoid
#       the cli/sti of iopl by effectively implementing the IO port access
#       parts of iopl in terms of ioperm.
#     
#       This may end up not workign well in case people actually depend on
#       cli/sti being available, or if there are mixed uses of iopl and
#       ioperm. We will see..       - Linus ]
#     
#     * 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
#       x86/ioperm: Fix use of deprecated config option
#       x86/entry/32: Clarify register saving in __switch_to_asm()
#       selftests/x86/iopl: Extend test to cover IOPL emulation
#       x86/ioperm: Extend IOPL config to control ioperm() as well
#       x86/iopl: Remove legacy IOPL option
#       x86/iopl: Restrict iopl() permission scope
#       x86/iopl: Fixup misleading comment
#       selftests/x86/ioperm: Extend testing so the shared bitmap is exercised
#       x86/ioperm: Share I/O bitmap if identical
#       x86/ioperm: Remove bitmap if all permissions dropped
#       x86/ioperm: Move TSS bitmap update to exit to user work
#       x86/ioperm: Add bitmap sequence number
#       x86/ioperm: Move iobitmap data into a struct
#       x86/tss: Move I/O bitmap data into a seperate struct
#       x86/io: Speedup schedule out of I/O bitmap user
#       x86/ioperm: Avoid bitmap allocation if no permissions are set
#       x86/ioperm: Simplify first ioperm() invocation logic
#       x86/iopl: Cleanup include maze
#       x86/tss: Fix and move VMX BUILD_BUG_ON()
#       x86/cpu: Unify cpu_init()
#       ...
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/mips-linux/bin/mips-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/mips-linux/bin/mips-linux-ld --version
# < git log --format=%s --max-count=1 ab851d49f6bfc781edd8bd44c72ec1e49211670b
# < make -s -j 120 ARCH=mips O=/kisskb/build/linus_malta_defconfig_mips-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/mips-linux/bin/mips-linux-  malta_defconfig
# make -s -j 120 ARCH=mips O=/kisskb/build/linus_malta_defconfig_mips-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/mips-linux/bin/mips-linux-  
Completed OK
# rm -rf /kisskb/build/linus_malta_defconfig_mips-gcc8
# Build took: 0:01:21.973641