# git rev-parse -q --verify 556baad64ee9f87db99de05be3b53edbd7beeaa1^{commit}
556baad64ee9f87db99de05be3b53edbd7beeaa1
already have revision, skipping fetch
# git checkout -q -f -B kisskb 556baad64ee9f87db99de05be3b53edbd7beeaa1
# git clean -qxdf
# < git log -1
# commit 556baad64ee9f87db99de05be3b53edbd7beeaa1
# Author: Jordan Niethe <jniethe5@gmail.com>
# Date:   Thu Feb 25 14:21:07 2021 +1100
# 
#     selftests/powerpc: Suggest memtrace instead of /dev/mem for ci memory
#     
#     The suggested alternative for getting cache-inhibited memory with 'mem='
#     and /dev/mem is pretty hacky. Also, PAPR guests do not allow system
#     memory to be mapped cache-inhibited so despite /dev/mem being available
#     this will not work which can cause confusion.  Instead recommend using
#     the memtrace buffers. memtrace is only available on powernv so there
#     will not be any chance of trying to do this in a guest.
#     
#     Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210225032108.1458352-2-jniethe5@gmail.com
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 556baad64ee9f87db99de05be3b53edbd7beeaa1
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_sbc8548_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  85xx/sbc8548_defconfig
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_sbc8548_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_sbc8548_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_sbc8548_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/signal_32.c: In function 'restore_user_regs':
/kisskb/src/arch/powerpc/kernel/signal_32.c:565:36: error: macro "unsafe_copy_from_user" requires 4 arguments, but only 3 given
           ELF_NEVRREG * sizeof(u32));
                                    ^
/kisskb/src/arch/powerpc/kernel/signal_32.c:564:3: error: 'unsafe_copy_from_user' undeclared (first use in this function)
   unsafe_copy_from_user(current->thread.evr, &sr->mc_vregs,
   ^
/kisskb/src/arch/powerpc/kernel/signal_32.c:564:3: note: each undeclared identifier is reported only once for each function it appears in
make[3]: *** [/kisskb/src/scripts/Makefile.build:271: arch/powerpc/kernel/signal_32.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:514: arch/powerpc/kernel] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1851: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:215: __sub-make] Error 2
Command 'make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_sbc8548_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_85xx_sbc8548_defconfig_powerpc-gcc4.9
# Build took: 0:00:43.192975