# git rev-parse -q --verify 4b1d3cd67479d037749c596913601daf95a74420^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
# git rev-parse -q --verify 4b1d3cd67479d037749c596913601daf95a74420^{commit}
4b1d3cd67479d037749c596913601daf95a74420
# 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/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 4b1d3cd67479d037749c596913601daf95a74420
# < make -s -j 80 ARCH=x86_64 O=/kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# make -s -j 80 ARCH=x86_64 O=/kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1034:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:650:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-next_x86_64-allnoconfig_x86_64-gcc4.6
# Build took: 0:00:20.046357