# git rev-parse -q --verify db886979683a8360ced9b24ab1125ad0c4d2cf76^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify db886979683a8360ced9b24ab1125ad0c4d2cf76^{commit}
db886979683a8360ced9b24ab1125ad0c4d2cf76
# git checkout -q -f -B kisskb db886979683a8360ced9b24ab1125ad0c4d2cf76
# git clean -qxdf
# < git log -1
# commit db886979683a8360ced9b24ab1125ad0c4d2cf76
# Author: Nathan Chancellor <nathan@kernel.org>
# Date:   Wed Jul 13 08:24:37 2022 -0700
# 
#     x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current
#     
#     Clang warns:
#     
#       arch/x86/kernel/cpu/bugs.c:58:21: error: section attribute is specified on redeclared variable [-Werror,-Wsection]
#       DEFINE_PER_CPU(u64, x86_spec_ctrl_current);
#                           ^
#       arch/x86/include/asm/nospec-branch.h:283:12: note: previous declaration is here
#       extern u64 x86_spec_ctrl_current;
#                  ^
#       1 error generated.
#     
#     The declaration should be using DECLARE_PER_CPU instead so all
#     attributes stay in sync.
#     
#     Cc: stable@vger.kernel.org
#     Fixes: fc02735b14ff ("KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS")
#     Reported-by: kernel test robot <lkp@intel.com>
#     Signed-off-by: Nathan Chancellor <nathan@kernel.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 db886979683a8360ced9b24ab1125ad0c4d2cf76
# < make -s -j 40 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 40 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 40 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:6263:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 40 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11
# Build took: 0:03:42.136706