# git rev-parse -q --verify 8bd72f8f7c64c22a621801a76c9423932844e014^{commit}
8bd72f8f7c64c22a621801a76c9423932844e014
already have revision, skipping fetch
# git checkout -q -f -B kisskb 8bd72f8f7c64c22a621801a76c9423932844e014
# git clean -qxdf
# < git log -1
# commit 8bd72f8f7c64c22a621801a76c9423932844e014
# Author: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
# Date:   Fri Mar 30 14:28:25 2018 -0300
# 
#     powerpc/pseries: Restore default security feature flags on setup
#     
#     After migration the security feature flags might have changed (e.g.,
#     destination system with unpatched firmware), but some flags are not
#     set/clear again in init_cpu_char_feature_flags() because it assumes
#     the security flags to be the defaults.
#     
#     Additionally, if the H_GET_CPU_CHARACTERISTICS hypercall fails then
#     init_cpu_char_feature_flags() does not run again, which potentially
#     might leave the system in an insecure or sub-optimal configuration.
#     
#     So, just restore the security feature flags to the defaults assumed
#     by init_cpu_char_feature_flags() so it can set/clear them correctly,
#     and to ensure safe settings are in place in case the hypercall fail.
#     
#     Fixes: f636c14790ea ("powerpc/pseries: Set or clear security feature flags")
#     Depends-on: 19887d6a28e2 ("powerpc: Move default security feature flags")
#     Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
#     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 8bd72f8f7c64c22a621801a76c9423932844e014
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64_defconfig+NO_KVM_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64_defconfig
# Added to kconfig CONFIG_KVM_BOOK3S_64=n
# Added to kconfig CONFIG_KVM=n
# yes \n | make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64_defconfig+NO_KVM_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-next_ppc64_defconfig+NO_KVM_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: modpost: Found 2 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/powerpc-next_ppc64_defconfig+NO_KVM_powerpc-5.3
# Build took: 0:02:57.551278