# git rev-parse -q --verify a2ccce2ddfec3972eb628de6aafe4910770ccb21^{commit}
a2ccce2ddfec3972eb628de6aafe4910770ccb21
already have revision, skipping fetch
# git checkout -q -f -B kisskb a2ccce2ddfec3972eb628de6aafe4910770ccb21
# git clean -qxdf
# < git log -1
# commit a2ccce2ddfec3972eb628de6aafe4910770ccb21
# Author: Paul Mackerras <paulus@ozlabs.org>
# Date:   Fri Aug 3 20:13:06 2018 +1000
# 
#     powerpc/64: Copy as much as possible in __copy_tofrom_user
#     
#     In __copy_tofrom_user, if we encounter an exception on a store, we
#     stop copying and return the number of bytes not copied.  However,
#     if the store is wider than one byte and is to an unaligned address,
#     it is possible that the store operand overlaps a page boundary
#     and the exception occurred on the latter part of the store operand,
#     meaning that it would be possible to copy a few more bytes.  Since
#     copy_to_user is generally expected to copy as much as possible,
#     it would be better to copy those extra few bytes.  This adds code
#     to do that.  Since this edge case is not performance-critical,
#     the code has been written to be compact rather than as fast as
#     possible.
#     
#     Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-gcc --version
# < git log --format=%s --max-count=1 a2ccce2ddfec3972eb628de6aafe4910770ccb21
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+STRICT_RWX_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  powernv_defconfig
# Added to kconfig CONFIG_RELOCATABLE=n
# Added to kconfig CONFIG_STRICT_KERNEL_RWX=y
# yes \n | make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+STRICT_RWX_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+STRICT_RWX_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/kisskb/src/drivers/crypto/nx/nx-842-powernv.c: In function 'nx842_powernv_init':
/kisskb/src/drivers/crypto/nx/nx-842-powernv.c:897:9: warning: 'ct' may be used uninitialized in this function [-Wmaybe-uninitialized]
   ret = opal_nx_coproc_init(chip_id, ct);
         ^
/kisskb/src/drivers/crypto/nx/nx-842-powernv.c:862:22: note: 'ct' was declared here
  int chip_id, vasid, ct, ret = 0;
                      ^
WARNING: modpost: Found 2 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/powerpc-next_powernv_defconfig+STRICT_RWX_ppc64le
# Build took: 0:00:55.510444