# git rev-parse -q --verify 2860180770b4136b1d05f47ed85723aa93bd5bb5^{commit}
2860180770b4136b1d05f47ed85723aa93bd5bb5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2860180770b4136b1d05f47ed85723aa93bd5bb5
# git clean -qxdf
# < git log -1
# commit 2860180770b4136b1d05f47ed85723aa93bd5bb5
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Sat Mar 2 22:30:28 2019 +1100
# 
#     powerpc/kconfig: Select HAVE_FUTEX_CMPXCHG
#     
#     The futex code allows architectures to determine at runtime if they
#     support futex_atomic_cmpxchg_inatomic(). It does this by calling that
#     function early in boot and checking if it returns -ENOSYS.
#     
#     That is fine but unnecessary on powerpc, as we always have support for
#     futex_atomic_cmpxchg_inatomic() if the kernel is built with FUTEX
#     support. It also means the first page fault we take at boot is on a
#     deliberate NULL pointer in kernel space, which can be confusing if
#     you're debugging the page fault code.
#     
#     We can avoid the runtime check by selecting HAVE_FUTEX_CMPXCHG, so
#     let's do that.
#     
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.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 2860180770b4136b1d05f47ed85723aa93bd5bb5
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_44x_rainier_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  44x/rainier_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_44x_rainier_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/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:339:21: note: 'pdeo' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
INFO: Uncompressed kernel (size 0x4814fc) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-5.0.0-rc2-g2860180770b4
Created:      Sun Mar  3 18:33:38 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2289262 Bytes = 2235.61 KiB = 2.18 MiB
Load Address: 00500000
Entry Point:  005014e0
Completed OK
# rm -rf /kisskb/build/powerpc-next_44x_rainier_defconfig_powerpc-gcc4.6
# Build took: 0:00:20.326568