# git rev-parse -q --verify e7c42a89e9f16039684418dfe3c43b068734ff8f^{commit}
e7c42a89e9f16039684418dfe3c43b068734ff8f
already have revision, skipping fetch
# git checkout -q -f -B kisskb e7c42a89e9f16039684418dfe3c43b068734ff8f
# git clean -qxdf
# < git log -1
# commit e7c42a89e9f16039684418dfe3c43b068734ff8f
# Merge: df49fd0ff83a 9cd05ad2910b
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Mar 2 11:47:29 2019 -0800
# 
#     Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "Two last minute fixes:
#     
#        - Prevent value evaluation via functions happening in the user access
#          enabled region of __put_user() (put another way: make sure to
#          evaluate the value to be stored in user space _before_ enabling
#          user space accesses)
#     
#        - Correct the definition of a Hyper-V hypercall constant"
#     
#     * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/hyper-v: Fix definition of HV_MAX_FLUSH_REP_COUNT
#       x86/uaccess: Don't leak the AC flag into __put_user() value evaluation
# < /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 e7c42a89e9f16039684418dfe3c43b068734ff8f
# < make -s -j 80 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
# make -s -j 80 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: 0:00:27.412075