# 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/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 2860180770b4136b1d05f47ed85723aa93bd5bb5
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  40x/obs600_defconfig
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/head_40x.S: Assembler messages:
/kisskb/src/arch/powerpc/kernel/head_40x.S:883: Warning: invalid register expression
INFO: Uncompressed kernel (size 0x4a998c) 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 19:14:03 2019
Image Type:   PowerPC Linux Multi-File Image (gzip compressed)
Data Size:    2400654 Bytes = 2344.39 KiB = 2.29 MiB
Load Address: 00000000
Entry Point:  00000000
Contents:
   Image 0: 2393766 Bytes = 2337.66 KiB = 2.28 MiB
   Image 1: 3 Bytes = 0.00 KiB = 0.00 MiB
   Image 2: 6866 Bytes = 6.71 KiB = 0.01 MiB
Completed OK
# rm -rf /kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-gcc5
# Build took: 0:00:32.310156