# git rev-parse -q --verify 68453767131a5deec1e8f9ac92a9042f929e585d^{commit}
68453767131a5deec1e8f9ac92a9042f929e585d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 68453767131a5deec1e8f9ac92a9042f929e585d
# git clean -qxdf
# < git log -1
# commit 68453767131a5deec1e8f9ac92a9042f929e585d
# Author: Randy Dunlap <rdunlap@infradead.org>
# Date:   Fri Mar 11 11:49:12 2022 -0800
# 
#     ARM: Spectre-BHB: provide empty stub for non-config
#     
#     When CONFIG_GENERIC_CPU_VULNERABILITIES is not set, references
#     to spectre_v2_update_state() cause a build error, so provide an
#     empty stub for that function when the Kconfig option is not set.
#     
#     Fixes this build error:
#     
#       arm-linux-gnueabi-ld: arch/arm/mm/proc-v7-bugs.o: in function `cpu_v7_bugs_init':
#       proc-v7-bugs.c:(.text+0x52): undefined reference to `spectre_v2_update_state'
#       arm-linux-gnueabi-ld: proc-v7-bugs.c:(.text+0x82): undefined reference to `spectre_v2_update_state'
#     
#     Fixes: b9baf5c8c5c3 ("ARM: Spectre-BHB workaround")
#     Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
#     Reported-by: kernel test robot <lkp@intel.com>
#     Cc: Russell King <rmk+kernel@armlinux.org.uk>
#     Cc: Catalin Marinas <catalin.marinas@arm.com>
#     Cc: linux-arm-kernel@lists.infradead.org
#     Cc: patches@armlinux.org.uk
#     Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 68453767131a5deec1e8f9ac92a9042f929e585d
# < make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:5535:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:01:26.845216