# git rev-parse -q --verify a518479650f4865195c0042f1abef0b49741952a^{commit}
a518479650f4865195c0042f1abef0b49741952a
already have revision, skipping fetch
# git checkout -q -f -B kisskb a518479650f4865195c0042f1abef0b49741952a
# git clean -qxdf
# < git log -1
# commit a518479650f4865195c0042f1abef0b49741952a
# Merge: 816975d19e27 94e4dcc75a47
# Author: Ingo Molnar <mingo@kernel.org>
# Date:   Thu Apr 18 15:38:52 2019 +0200
# 
#     Merge branch 'core/rcu'
# < /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 a518479650f4865195c0042f1abef0b49741952a
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/tip_powernv_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/tip_powernv_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
WARNING: vmlinux.o(.text+0x2d28): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:early_setup()
The function start_here_multiplatform() references
the function __init early_setup().
This is often because start_here_multiplatform lacks a __init 
annotation or the annotation of early_setup is wrong.

WARNING: vmlinux.o(.text+0x2d5c): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/tip_powernv_defconfig_ppc64le-gcc5
# Build took: 0:03:11.947717