# git rev-parse -q --verify 2ef9f62a79706208c5a397a9645a45a63be6e718^{commit}
2ef9f62a79706208c5a397a9645a45a63be6e718
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2ef9f62a79706208c5a397a9645a45a63be6e718
# git clean -qxdf
# < git log -1
# commit 2ef9f62a79706208c5a397a9645a45a63be6e718
# Author: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
# Date:   Fri Feb 22 11:40:46 2019 +1100
# 
#     powerpc: Enable kcov
#     
#     kcov provides kernel coverage data that's useful for fuzzing tools like
#     syzkaller.
#     
#     Wire up kcov support on powerpc. Disable kcov instrumentation on the same
#     files where we currently disable gcov and UBSan instrumentation, plus some
#     additional exclusions which appear necessary to boot on book3e machines.
#     
#     Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
#     Acked-by: Dmitry Vyukov <dvyukov@google.com>
#     Tested-by: Daniel Axtens <dja@axtens.net> # e6500
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 2ef9f62a79706208c5a397a9645a45a63be6e718
# < make -s -j 8 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 8 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/powerpc-next_sparc64-defconfig_sparc64
# Build took: 0:01:39.601607