# git rev-parse -q --verify f4a0318f278d98d9492916722e85f258c2221f88^{commit}
f4a0318f278d98d9492916722e85f258c2221f88
already have revision, skipping fetch
# git checkout -q -f -B kisskb f4a0318f278d98d9492916722e85f258c2221f88
# git clean -qxdf
# < git log -1
# commit f4a0318f278d98d9492916722e85f258c2221f88
# Author: Xiu Jianfeng <xiujianfeng@huawei.com>
# Date:   Fri Jul 1 16:24:35 2022 +0800
# 
#     powerpc: add support for syscall stack randomization
#     
#     Add support for adding a random offset to the stack while handling
#     syscalls. This patch uses mftb() instead of get_random_int() for better
#     performance.
#     
#     In order to avoid unconditional stack canaries on syscall entry (due to
#     the use of alloca()), also disable stack protector to avoid triggering
#     needless checks and slowing down the entry path. As there is no general
#     way to control stack protector coverage with a function attribute, this
#     must be disabled at the compilation unit level.
#     
#     Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
#     Reviewed-by: Kees Cook <keescook@chromium.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20220701082435.126596-3-xiujianfeng@huawei.com
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 f4a0318f278d98d9492916722e85f258c2221f88
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  randconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n
# Added to kconfig CONFIG_UBSAN=n
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:6246:warning: override: reassigning to symbol PPC64
.config:6248:warning: override: reassigning to symbol SECTION_MISMATCH_WARN_ONLY
.config:6249:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
.config:6251:warning: override: reassigning to symbol GCC_PLUGINS
.config:6253:warning: override: reassigning to symbol TRIM_UNUSED_KSYMS
.config:6254:warning: override: reassigning to symbol UBSAN
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc11
# Build took: 0:04:18.491165