# 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/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 54c490164523de90c42b1d89e7de3befe3284d1b
# < make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  allnoconfig
# make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
/kisskb/src/arch/s390/mm/pgtable.c:413:15: warning: 'pmd_alloc_map' defined but not used [-Wunused-function]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:187:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/s390/kernel/machine_kexec.c:145:22: warning: 'do_start_kdump' defined but not used [-Wunused-function]
Completed OK
# rm -rf /kisskb/build/linus_s390-allnoconfig_s390x
# Build took: 0:00:09.047820