# 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 # 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 # Signed-off-by: Michael Ellerman # < /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_83xx_mpc834x_itxgp_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 83xx/mpc834x_itxgp_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_83xx_mpc834x_itxgp_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x530e04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x530e04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5206ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-4.16.0-rc4-g8bd72f8 Created: Tue Apr 3 21:25:57 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2631329 Bytes = 2569.66 kB = 2.51 MB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-4.16.0-rc4-g8bd72f8 Created: Tue Apr 3 21:25:57 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2654938 Bytes = 2592.71 kB = 2.53 MB Load Address: 00600000 Entry Point: 006001f4 Image Name: Linux-4.16.0-rc4-g8bd72f8 Created: Tue Apr 3 21:25:57 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2654757 Bytes = 2592.54 kB = 2.53 MB Load Address: 00600000 Entry Point: 006001f4 Completed OK # rm -rf /kisskb/build/powerpc-next_83xx_mpc834x_itxgp_defconfig_powerpc-5.3 # Build took: 0:00:43.644139