# git rev-parse -q --verify 4b1d3cd67479d037749c596913601daf95a74420^{commit}
4b1d3cd67479d037749c596913601daf95a74420
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4b1d3cd67479d037749c596913601daf95a74420
# git clean -qxdf
# < git log -1
# commit 4b1d3cd67479d037749c596913601daf95a74420
# 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/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 4b1d3cd67479d037749c596913601daf95a74420
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_acadia_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  40x/acadia_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_acadia_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/head_40x.S: Assembler messages:
/kisskb/src/arch/powerpc/kernel/head_40x.S:883: Warning: invalid register expression
INFO: Uncompressed kernel (size 0x4a9bec) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-5.0.0-rc2-g4b1d3cd67479
Created:      Sat Feb 23 02:55:14 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2393925 Bytes = 2337.82 KiB = 2.28 MiB
Load Address: 00500000
Entry Point:  005017dc
Completed OK
# rm -rf /kisskb/build/powerpc-next_40x_acadia_defconfig_powerpc-gcc5
# Build took: 0:00:22.453111