# git gc
# git rev-parse -q --verify 512a9ffd687976079408cd43d442ebba5f34175c^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/alexey/linux.git kisskb
# git rev-parse -q --verify 512a9ffd687976079408cd43d442ebba5f34175c^{commit}
512a9ffd687976079408cd43d442ebba5f34175c
# git checkout -q -f -B kisskb 512a9ffd687976079408cd43d442ebba5f34175c
# git clean -qxdf
# < git log -1
# commit 512a9ffd687976079408cd43d442ebba5f34175c
# Author: Alexey Kardashevskiy <aik@ozlabs.ru>
# Date:   Wed Jan 23 14:53:40 2019 +1100
# 
#     vfio-pci/nvlink2: Fix ancient gcc warnings
#     
#     Using the {0} construct as a generic initializer is perfectly fine in C,
#     however due to a bug in old gcc there is a warning:
#     
#       + /kisskb/src/drivers/vfio/pci/vfio_pci_nvlink2.c: warning: (near
#     initialization for 'cap.header') [-Wmissing-braces]:  => 181:9
#     
#     Since for whatever reason we still want to compile the modern kernel
#     with such an old gcc without warnings, this changes the capabilities
#     initialization.
#     
#     The gcc bugzilla: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119
#     
#     Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 512a9ffd687976079408cd43d442ebba5f34175c
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/aik_mpc512x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  mpc512x_defconfig
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/aik_mpc512x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 8 ARCH=powerpc O=/kisskb/build/aik_mpc512x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 8 ARCH=powerpc O=/kisskb/build/aik_mpc512x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/drivers/mtd/nand/raw/mpc5121_nfc.c: In function 'ads5121_select_chip':
/kisskb/src/drivers/mtd/nand/raw/mpc5121_nfc.c:306:19: warning: unused variable 'mtd' [-Wunused-variable]
  struct mtd_info *mtd = nand_to_mtd(nand);
                   ^
INFO: Uncompressed kernel (size 0x5ff2c0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-5.0.0-rc2-g512a9ffd6879
Created:      Wed May 13 14:31:39 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3104583 Bytes = 3031.82 KiB = 2.96 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/aik_mpc512x_defconfig_powerpc-gcc4.9
# Build took: 0:07:02.021914