# git rev-parse -q --verify 8dcd71b45df34d9b903450fab147ee8c1e6c16b5^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 8dcd71b45df34d9b903450fab147ee8c1e6c16b5^{commit}
8dcd71b45df34d9b903450fab147ee8c1e6c16b5
# git checkout -q -f -B kisskb 8dcd71b45df34d9b903450fab147ee8c1e6c16b5
# git clean -qxdf
# < git log -1
# commit 8dcd71b45df34d9b903450fab147ee8c1e6c16b5
# Author: Nathan Chancellor <natechancellor@gmail.com>
# Date:   Mon Nov 18 21:57:12 2019 -0700
# 
#     powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp
#     
#     LLVM revision r374662 gives LLVM the ability to convert certain loops
#     into a reference to bcmp as an optimization; this breaks
#     prom_init_check.sh:
#     
#         CALL    arch/powerpc/kernel/prom_init_check.sh
#       Error: External symbol 'bcmp' referenced from prom_init.c
#       make[2]: *** [arch/powerpc/kernel/Makefile:196: prom_init_check] Error 1
#     
#     bcmp is defined in lib/string.c as a wrapper for memcmp so this could
#     be added to the whitelist. However, commit
#     450e7dd4001f ("powerpc/prom_init: don't use string functions from
#     lib/") copied memcmp as prom_memcmp to avoid KASAN instrumentation so
#     having bcmp be resolved to regular memcmp would break that assumption.
#     Furthermore, because the compiler is the one that inserted bcmp, we
#     cannot provide something like prom_bcmp.
#     
#     To prevent LLVM from being clever with optimizations like this, use
#     -ffreestanding to tell LLVM we are not hosted so it is not free to
#     make transformations like this.
#     
#     Reviewed-by: Nick Desaulneris <ndesaulniers@google.com>
#     Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191119045712.39633-4-natechancellor@gmail.com
# < /opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-gcc --version
# < /opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-ld --version
# < git log --format=%s --max-count=1 8dcd71b45df34d9b903450fab147ee8c1e6c16b5
# < make -s -j 48 ARCH=mips O=/kisskb/build/powerpc-next_mips-defconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  defconfig
# make -s -j 48 ARCH=mips O=/kisskb/build/powerpc-next_mips-defconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  
FIT description: Linux 5.4.0-rc2-g8dcd71b45df3
Created:         Mon Nov 25 23:55:44 2019
 Image 0 (kernel@0)
  Description:  Linux 5.4.0-rc2-g8dcd71b45df3
  Created:      Mon Nov 25 23:55:44 2019
  Type:         Kernel Image
  Compression:  gzip compressed
  Data Size:    4788473 Bytes = 4676.24 KiB = 4.57 MiB
  Architecture: MIPS
  OS:           Linux
  Load Address: 0x80100000
  Entry Point:  0x808d5390
  Hash algo:    sha1
  Hash value:   bcc44b76c8f04431b64446375e4b27957e3ec17e
 Image 1 (fdt@boston)
  Description:  img,boston Device Tree
  Created:      Mon Nov 25 23:55:44 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    3793 Bytes = 3.70 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   4799f50d688573234da6e9d7701234d394759ef4
 Image 2 (fdt@ni169445)
  Description:  NI 169445 device tree
  Created:      Mon Nov 25 23:55:44 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    1871 Bytes = 1.83 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   51b89b31605ee62038c8468c429af091dfc75ec7
 Image 3 (fdt@ocelot_pcb123)
  Description:  MSCC Ocelot PCB123 Device Tree
  Created:      Mon Nov 25 23:55:44 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    4639 Bytes = 4.53 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   018897896b42c41c943aca35a20e4300dba250c8
 Image 4 (fdt@ocelot_pcb120)
  Description:  MSCC Ocelot PCB120 Device Tree
  Created:      Mon Nov 25 23:55:44 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    5198 Bytes = 5.08 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   36c7bd0bd79cfc2f7dd6acda6c7996294f4967e6
 Image 5 (fdt@xilfpga)
  Description:  MIPSfpga (xilfpga) Device Tree
  Created:      Mon Nov 25 23:55:44 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    2708 Bytes = 2.64 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   63d058b780f65e22da30f0a183433765f1807f1d
 Default Configuration: 'conf@default'
 Configuration 0 (conf@default)
  Description:  Generic Linux kernel
  Kernel:       kernel@0
 Configuration 1 (conf@boston)
  Description:  Boston Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@boston
 Configuration 2 (conf@ni169445)
  Description:  NI 169445 Linux Kernel
  Kernel:       kernel@0
  FDT:          fdt@ni169445
 Configuration 3 (conf@ocelot_pcb123)
  Description:  Ocelot Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@ocelot_pcb123
 Configuration 4 (conf@ocelot_pcb120)
  Description:  Ocelot Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@ocelot_pcb120
 Configuration 5 (conf@xilfpga)
  Description:  MIPSfpga Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@xilfpga
Completed OK
# rm -rf /kisskb/build/powerpc-next_mips-defconfig_mipsel
# Build took: 0:02:05.850987