With endian switch disabled by default the ppc64le compat supports ppc32le only which is something next to nobody has binaries for. Less code means less bugs so drop the compat stuff. I am not particularly sure about the best way to resolve the llseek situation. I don't see anything in the syscal tables making it 32bit-only so I suppose it should be available on 64bit as well. This is tested on ppc64le top of https://patchwork.ozlabs.org/cover/1141078/ https://patchwork.ozlabs.org/cover/1153556/ https://patchwork.ozlabs.org/cover/1150815/ Thanks Michal Michal Suchanek (4): fs: always build llseek. powerpc: move common register copy functions from signal_32.c to signal.c powerpc/64: make buildable without CONFIG_COMPAT powerpc/64: Disable COMPAT if littleendian. arch/powerpc/Kconfig | 2 +- arch/powerpc/include/asm/syscall.h | 2 + arch/powerpc/kernel/Makefile | 15 ++- arch/powerpc/kernel/entry_64.S | 2 + arch/powerpc/kernel/signal.c | 146 ++++++++++++++++++++++++++++- arch/powerpc/kernel/signal_32.c | 140 --------------------------- arch/powerpc/kernel/syscall_64.c | 5 +- arch/powerpc/kernel/vdso.c | 4 +- arch/powerpc/perf/callchain.c | 14 ++- fs/read_write.c | 2 - 10 files changed, 177 insertions(+), 155 deletions(-) -- 2.22.0