# git gc
# git rev-parse -q --verify cb1eeb75cf3dd84ced81333967200583993dfd73^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/crypto master
# git rev-parse -q --verify cb1eeb75cf3dd84ced81333967200583993dfd73^{commit}
cb1eeb75cf3dd84ced81333967200583993dfd73
# git checkout -q -f -B kisskb cb1eeb75cf3dd84ced81333967200583993dfd73
# git clean -qxdf
# < git log -1
# commit cb1eeb75cf3dd84ced81333967200583993dfd73
# Author: Arnd Bergmann <arnd@arndb.de>
# Date:   Tue Jan 7 21:08:58 2020 +0100
# 
#     crypto: hisilicon/sec2 - Use atomics instead of __sync
#     
#     The use of __sync functions for atomic memory access is not
#     supported in the kernel, and can result in a link error depending
#     on configuration:
#     
#     ERROR: "__tsan_atomic32_compare_exchange_strong" [drivers/crypto/hisilicon/sec2/hisi_sec2.ko] undefined!
#     ERROR: "__tsan_atomic64_fetch_add" [drivers/crypto/hisilicon/sec2/hisi_sec2.ko] undefined!
#     
#     Use the kernel's own atomic interfaces instead. This way the
#     debugfs interface actually reads the counter atomically.
#     
#     Fixes: 416d82204df4 ("crypto: hisilicon - add HiSilicon SEC V2 driver")
#     Signed-off-by: Arnd Bergmann <arnd@arndb.de>
#     Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 cb1eeb75cf3dd84ced81333967200583993dfd73
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/crypto_ppc64e_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc64e_defconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/crypto_ppc64e_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.30':
/kisskb/src/net/bridge/br_netlink.c:648:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
WARNING: vmlinux.o (.PPC.EMB.apuinfo): unexpected non-allocatable section.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.

INFO: Uncompressed kernel (size 0xbc73b8) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xc00000)
Image Name:   Linux-5.4.0-rc1-gcb1eeb75cf3d
Created:      Thu Jan  9 15:32:39 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    4908742 Bytes = 4793.69 KiB = 4.68 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/crypto_ppc64e_defconfig_powerpc-gcc4.6
# Build took: 0:08:06.163439