# git rev-parse -q --verify a9815a4fa2fd297cab9fa7a12161b16657290293^{commit}
a9815a4fa2fd297cab9fa7a12161b16657290293
already have revision, skipping fetch
# git checkout -q -f -B kisskb a9815a4fa2fd297cab9fa7a12161b16657290293
# git clean -qxdf
# < git log -1
# commit a9815a4fa2fd297cab9fa7a12161b16657290293
# Merge: e24ce84e85ab 517c3ba00916
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Jul 27 21:46:43 2019 -0700
# 
#     Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "A set of x86 fixes and functional updates:
#     
#        - Prevent stale huge I/O TLB mappings on 32bit. A long standing bug
#          which got exposed by KPTI support for 32bit
#     
#        - Prevent bogus access_ok() warnings in arch_stack_walk_user()
#     
#        - Add display quirks for Lenovo devices which have height and width
#          swapped
#     
#        - Add the missing CR2 fixup for 32 bit async pagefaults. Fallout of
#          the CR2 bug fix series.
#     
#        - Unbreak handling of force enabled HPET by moving the 'is HPET
#          counting' check back to the original place.
#     
#        - A more accurate check for running on a hypervisor platform in the
#          MDS mitigation code. Not perfect, but more accurate than the
#          previous one.
#     
#        - Update a stale and confusing comment vs. IRQ stacks"
#     
#     * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/speculation/mds: Apply more accurate check on hypervisor platform
#       x86/hpet: Undo the early counter is counting check
#       x86/entry/32: Pass cr2 to do_async_page_fault()
#       x86/irq/64: Update stale comment
#       x86/sysfb_efi: Add quirks for some devices with swapped width and height
#       x86/stacktrace: Prevent access_ok() warnings in arch_stack_walk_user()
#       mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
#       x86/mm: Sync also unmappings in vmalloc_sync_all()
#       x86/mm: Check for pfn instead of page in vmalloc_sync_one()
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 a9815a4fa2fd297cab9fa7a12161b16657290293
# < make -s -j 48 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# make -s -j 48 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/um/os-Linux/signal.c: In function 'timer_real_alarm_handler':
/kisskb/src/arch/um/os-Linux/signal.c:93:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
/kisskb/src/arch/um/os-Linux/signal.c: In function 'sig_handler_common':
/kisskb/src/arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:00:45.224744