# git rev-parse -q --verify 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b^{commit}
932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b
# git clean -qxdf
# < git log -1
# commit 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Wed Jan 22 17:52:50 2020 +0000
# 
#     powerpc/32s: Drop NULL addr verification
#     
#     NULL addr is a user address. Don't waste time checking it. If
#     someone tries to access it, it will SIGFAULT the same way as for
#     address 1, so no need to make it special.
#     
#     The special case is when not doing a write, in that case we want
#     to drop the entire function. This is now handled by 'dir' param
#     and not by the nulity of 'to' anymore.
#     
#     Also make beginning of prevent_user_access() similar
#     to beginning of allow_user_access(), and tell the compiler
#     that writing in kernel space or with a 0 length is unlikely
#     
#     Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/d79cb9f680f4e971e05262303103a4b94baa91ce.1579715466.git.christophe.leroy@c-s.fr
# < /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 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_le_defconfig+NO_SPLPAR_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pseries_le_defconfig
# Added to kconfig CONFIG_PPC_SPLPAR=n
# yes \n | make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_le_defconfig+NO_SPLPAR_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_le_defconfig+NO_SPLPAR_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: vmlinux.o(.text+0x2e1c): Section mismatch in reference from the variable __boot_from_prom to the function .init.text:prom_init()
The function __boot_from_prom() references
the function __init prom_init().
This is often because __boot_from_prom lacks a __init 
annotation or the annotation of prom_init is wrong.

WARNING: vmlinux.o(.text+0x2fc8): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/powerpc-next_pseries_le_defconfig+NO_SPLPAR_ppc64le-gcc5
# Build took: 0:02:39.378753