# git rev-parse -q --verify 54c490164523de90c42b1d89e7de3befe3284d1b^{commit}
54c490164523de90c42b1d89e7de3befe3284d1b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 54c490164523de90c42b1d89e7de3befe3284d1b
# git clean -qxdf
# < git log -1
# commit 54c490164523de90c42b1d89e7de3befe3284d1b
# Merge: babf09c3837f 9a18b5a412ba
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Mar 20 11:01:52 2019 -0700
# 
#     Merge tag 'arc-5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
#     
#     Pull ARC updates from Vineet Gupta:
#     
#      - unaligned access support for HS cores
#     
#      - Removed extra memory barrier around spinlock code
#     
#      - HSDK platform updates: enable dmac, reset
#     
#      - some more boot logging updates
#     
#      - misc minor fixes
#     
#     * tag 'arc-5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
#       arch: arc: Kconfig: pedantic formatting
#       ARCv2: spinlock: remove the extra smp_mb before lock, after unlock
#       ARC: unaligned: relax the check for gcc supporting -mno-unaligned-access
#       ARC: boot log: cut down on verbosity
#       ARCv2: boot log: refurbish HS core/release identification
#       arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM
#       ARC: u-boot args: check that magic number is correct
#       ARC: perf: bpok condition only exists for ARCompact
#       ARCv2: Add explcit unaligned access support (and ability to disable too)
#       ARCv2: lib: introduce memcpy optimized for unaligned access
#       ARC: [plat-hsdk]: Enable AXI DW DMAC support
#       ARC: [plat-hsdk]: Add reset controller handle to manage USB reset
#       ARC: DTB: [scripted] fix node name and address spelling
# < /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 54c490164523de90c42b1d89e7de3befe3284d1b
# < 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/kernel/skas/uaccess.c: In function 'do_op_one_page':
/kisskb/src/arch/um/kernel/skas/uaccess.c:62:10: warning: unused variable 'buf' [-Wunused-variable]
  jmp_buf buf;
          ^
/kisskb/src/arch/um/os-Linux/umid.c: In function 'is_umdir_used':
/kisskb/src/arch/um/os-Linux/umid.c:138:2: warning: ISO C90 forbids variable length array 'file' [-Wvla]
  char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
  ^
/kisskb/src/arch/um/os-Linux/umid.c: In function 'create_pid_file':
/kisskb/src/arch/um/os-Linux/umid.c:213:2: warning: ISO C90 forbids variable length array 'file' [-Wvla]
  char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
  ^
/kisskb/src/arch/um/os-Linux/umid.c: In function 'remove_umid_dir':
/kisskb/src/arch/um/os-Linux/umid.c:388:2: warning: ISO C90 forbids variable length array 'dir' [-Wvla]
  char dir[strlen(uml_dir) + UMID_LEN + 1], err;
  ^
/kisskb/src/mm/mprotect.c: In function 'change_pte_range':
/kisskb/src/mm/mprotect.c:42:20: warning: unused variable 'mm' [-Wunused-variable]
  struct mm_struct *mm = vma->vm_mm;
                    ^
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:00:37.216205