# 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_ppc40x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc40x_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_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:804: Warning: invalid register expression
INFO: Uncompressed kernel (size 0x57e02c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x57e02c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x57e02c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x56d97c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x57e02c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-5.5.0-rc5-g932bba9c9c94
Created:      Fri Jan 24 04:24:27 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2778184 Bytes = 2713.07 KiB = 2.65 MiB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-5.5.0-rc5-g932bba9c9c94
Created:      Fri Jan 24 04:24:27 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2810995 Bytes = 2745.11 KiB = 2.68 MiB
Load Address: 00600000
Entry Point:  006017dc
Image Name:   Linux-5.5.0-rc5-g932bba9c9c94
Created:      Fri Jan 24 04:24:28 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2811368 Bytes = 2745.48 KiB = 2.68 MiB
Load Address: 00600000
Entry Point:  00601a18
Completed OK
# rm -rf /kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc5
# Build took: 0:00:48.708710