# git rev-parse -q --verify ed8780e3f2ecc82645342d070c6b4e530532e680^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify ed8780e3f2ecc82645342d070c6b4e530532e680^{commit}
ed8780e3f2ecc82645342d070c6b4e530532e680
# git checkout -q -f -B kisskb ed8780e3f2ecc82645342d070c6b4e530532e680
# git clean -qxdf
# < git log -1
# commit ed8780e3f2ecc82645342d070c6b4e530532e680
# Merge: 8c2ab803e565 abee7c494d8c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Oct 27 14:39:29 2020 -0700
# 
#     Merge tag 'x86-urgent-2020-10-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "A couple of x86 fixes which missed rc1 due to my stupidity:
#     
#        - Drop lazy TLB mode before switching to the temporary address space
#          for text patching.
#     
#          text_poke() switches to the temporary mm which clears the lazy mode
#          and restores the original mm afterwards. Due to clearing lazy mode
#          this might restore a already dead mm if exit_mmap() runs in
#          parallel on another CPU.
#     
#        - Document the x32 syscall design fail vs. syscall numbers 512-547
#          properly.
#     
#        - Fix the ORC unwinder to handle the inactive task frame correctly.
#     
#          This was unearthed due to the slightly different code generation of
#          gcc-10.
#     
#        - Use an up to date screen_info for the boot params of kexec instead
#          of the possibly stale and invalid version which happened to be
#          valid when the kexec kernel was loaded"
#     
#     * tag 'x86-urgent-2020-10-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/alternative: Don't call text_poke() in lazy TLB mode
#       x86/syscalls: Document the fact that syscalls 512-547 are a legacy mistake
#       x86/unwind/orc: Fix inactive tasks with stack pointer in %sp on GCC 10 compiled kernels
#       hyperv_fb: Update screen_info after removing old framebuffer
#       x86/kexec: Use up-to-dated screen_info copy to fill boot params
# < /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 ed8780e3f2ecc82645342d070c6b4e530532e680
# < make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  randconfig
KCONFIG_SEED=0x635D531E
# Added to kconfig CONFIG_STANDALONE=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_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# yes \n | make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
kernel/bpf/core.o: warning: objtool: ___bpf_prog_run()+0xbaa: call without frame pointer save/setup
vmlinux.o: warning: objtool: __do_fast_syscall_32()+0x5c: call to syscall_enter_from_user_mode_work() leaves .noinstr.text section
vmlinux.o: warning: objtool: do_machine_check()+0x190: call to {dynamic}() leaves .noinstr.text section
Completed OK
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8
# Build took: 0:06:48.979770