# 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-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < git log --format=%s --max-count=1 a2ccce2ddfec3972eb628de6aafe4910770ccb21
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  40x/obs600_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
INFO: Uncompressed kernel (size 0x485bd8) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-4.18.0-rc3-ga2ccce2
Created:      Mon Aug  6 23:34:31 2018
Image Type:   PowerPC Linux Multi-File Image (gzip compressed)
Data Size:    2329838 Bytes = 2275.23 kB = 2.22 MB
Load Address: 00000000
Entry Point:  00000000
Contents:
   Image 0: 2322949 Bytes = 2268.50 kB = 2.22 MB
   Image 1: 3 Bytes = 0.00 kB = 0.00 MB
   Image 2: 6866 Bytes = 6.71 kB = 0.01 MB
Completed OK
# rm -rf /kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-5.3
# Build took: 0:00:18.804458