# git rev-parse -q --verify 4f8a3cc1183c442daee6cc65360e3385021131e4^{commit}
4f8a3cc1183c442daee6cc65360e3385021131e4
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4f8a3cc1183c442daee6cc65360e3385021131e4
# git clean -qxdf
# < git log -1
# commit 4f8a3cc1183c442daee6cc65360e3385021131e4
# Merge: 0785249f8b93 e6f8b6c12f03
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Apr 12 10:17:16 2020 -0700
# 
#     Merge tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "A set of three patches to fix the fallout of the newly added split
#       lock detection feature.
#     
#       It addressed the case where a KVM guest triggers a split lock #AC and
#       KVM reinjects it into the guest which is not prepared to handle it.
#     
#       Add proper sanity checks which prevent the unconditional injection
#       into the guest and handles the #AC on the host side in the same way as
#       user space detections are handled. Depending on the detection mode it
#       either warns and disables detection for the task or kills the task if
#       the mode is set to fatal"
#     
#     * tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest
#       KVM: x86: Emulate split-lock access as a write in emulator
#       x86/split_lock: Provide handle_guest_split_lock()
# < /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 4f8a3cc1183c442daee6cc65360e3385021131e4
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_collie_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  collie_defconfig
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_collie_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_collie_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_collie_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return oldval == cmparg;
                 ^
/kisskb/src/kernel/futex.c:1652:6: note: 'oldval' was declared here
  int oldval, ret;
      ^
Completed OK
# rm -rf /kisskb/build/linus_collie_defconfig_arm-gcc4.9
# Build took: 0:00:34.304670