# git rev-parse -q --verify f0e26956bcea49f03a88e87d784a0a3b53760cb0^{commit}
f0e26956bcea49f03a88e87d784a0a3b53760cb0
already have revision, skipping fetch
# git checkout -q -f -B kisskb f0e26956bcea49f03a88e87d784a0a3b53760cb0
# git clean -qxdf
# < git log -1
# commit f0e26956bcea49f03a88e87d784a0a3b53760cb0
# Author: Michal Suchanek <msuchanek@suse.de>
# Date:   Thu Mar 15 20:15:52 2018 +0100
# 
#     powerpc/64: Use barrier_nospec in syscall entry
#     
#     On powerpc syscall entry is done in assembly so patch in an explicit
#     barrier_nospec.
#     
#     Signed-off-by: Michal Suchanek <msuchanek@suse.de>
#     [mpe: Move the barrier to immediately prior to the vulnerable load,
#           and add a comment trying to explain why. Drop the barrier from
#           syscall_dotrace, because that syscall number comes from the
#           kernel.]
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < git log --format=%s --max-count=1 f0e26956bcea49f03a88e87d784a0a3b53760cb0
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64e_defconfig
# Added to kconfig CONFIG_SMP=n
# yes \n | make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xcfcf20) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xd00000)
Image Name:   Linux-4.17.0-rc1-gf0e2695
Created:      Wed Apr 18 00:04:12 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    5577152 Bytes = 5446.44 kB = 5.32 MB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-5.3
# Build took: 0:01:33.213773