# git rev-parse -q --verify 414eece95b98b209cef0f49cfcac108fd00b8ced^{commit}
414eece95b98b209cef0f49cfcac108fd00b8ced
already have revision, skipping fetch
# git checkout -q -f -B kisskb 414eece95b98b209cef0f49cfcac108fd00b8ced
# git clean -qxdf
# < git log -1
# commit 414eece95b98b209cef0f49cfcac108fd00b8ced
# Merge: 6dd580b93da8 5e95325fbbbd
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Feb 23 15:13:45 2021 -0800
# 
#     Merge tag 'clang-lto-v5.12-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
#     
#     Pull more clang LTO updates from Kees Cook:
#      "Clang LTO x86 enablement.
#     
#       Full disclosure: while this has _not_ been in linux-next (since it
#       initially looked like the objtool dependencies weren't going to make
#       v5.12), it has been under daily build and runtime testing by Sami for
#       quite some time. These x86 portions have been discussed on lkml, with
#       Peter, Josh, and others helping nail things down.
#     
#       The bulk of the changes are to get objtool working happily. The rest
#       of the x86 enablement is very small.
#     
#       Summary:
#     
#        - Generate __mcount_loc in objtool (Peter Zijlstra)
#     
#        - Support running objtool against vmlinux.o (Sami Tolvanen)
#     
#        - Clang LTO enablement for x86 (Sami Tolvanen)"
#     
#     Link: https://lore.kernel.org/lkml/20201013003203.4168817-26-samitolvanen@google.com/
#     Link: https://lore.kernel.org/lkml/cover.1611263461.git.jpoimboe@redhat.com/
#     
#     * tag 'clang-lto-v5.12-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
#       kbuild: lto: force rebuilds when switching CONFIG_LTO
#       x86, build: allow LTO to be selected
#       x86, cpu: disable LTO for cpu.c
#       x86, vdso: disable LTO only for vDSO
#       kbuild: lto: postpone objtool
#       objtool: Split noinstr validation from --vmlinux
#       x86, build: use objtool mcount
#       tracing: add support for objtool mcount
#       objtool: Don't autodetect vmlinux.o
#       objtool: Fix __mcount_loc generation with Clang's assembler
#       objtool: Add a pass for generating __mcount_loc
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 414eece95b98b209cef0f49cfcac108fd00b8ced
# < make -s -j 8 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# < make -s -j 8 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 8 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 8 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/lib/bitfield_kunit.c: In function 'test_bitfields_constants':
/kisskb/src/lib/bitfield_kunit.c:93:1: warning: the frame size of 7432 bytes is larger than 2048 bytes [-Wframe-larger-than=]
 }
 ^
Completed OK
# rm -rf /kisskb/build/linus_x86-allmodconfig_x86_64-gcc8
# Build took: 0:46:46.649942