Another round of scv, which is getting closer to done. ABI and compatibility / feature testing still not set in stone, but some good discussion among the various libcs etc. and it's close enough that changes should just be small tweaks to clobbers etc. Posting now because there is some interest to prototype userspace support which we should do before fixing the ABI.
This relies on some of the signal handling and kuap patches I already posted, so tree is here: https://github.com/npiggin/linux/commits/next-test I have qemu scv support apatches I need to resend, but they're not merged yet. POWER9 system simulator should support it, but I have not tested the public version: https://www14.software.ibm.com/support/customercare/sas/f/pwrfs/pwr9/home.html Thanks, Nick Nicholas Piggin (2): powerpc/64s/exception: treat NIA below __end_interrupts as soft-masked powerpc/64s: system call support for scv/rfscv instructions Documentation/powerpc/syscall64-abi.rst | 42 ++++-- arch/powerpc/include/asm/asm-prototypes.h | 2 +- arch/powerpc/include/asm/exception-64s.h | 6 + arch/powerpc/include/asm/head-64.h | 2 +- arch/powerpc/include/asm/ppc-opcode.h | 2 + arch/powerpc/include/asm/ppc_asm.h | 2 + arch/powerpc/include/asm/processor.h | 2 +- arch/powerpc/include/asm/ptrace.h | 8 +- arch/powerpc/include/asm/setup.h | 4 +- arch/powerpc/include/asm/sstep.h | 1 + arch/powerpc/include/asm/vdso.h | 1 + arch/powerpc/kernel/cpu_setup_power.S | 2 +- arch/powerpc/kernel/cputable.c | 3 +- arch/powerpc/kernel/dt_cpu_ftrs.c | 1 + arch/powerpc/kernel/entry_64.S | 158 +++++++++++++++++++++- arch/powerpc/kernel/exceptions-64s.S | 150 +++++++++++++++++++- arch/powerpc/kernel/process.c | 10 +- arch/powerpc/kernel/setup_64.c | 5 +- arch/powerpc/kernel/signal.c | 19 ++- arch/powerpc/kernel/signal_64.c | 28 +++- arch/powerpc/kernel/syscall_64.c | 32 +++-- arch/powerpc/kernel/vdso.c | 2 + arch/powerpc/kernel/vdso64/sigtramp.S | 34 ++++- arch/powerpc/kernel/vdso64/vdso64.lds.S | 1 + arch/powerpc/lib/sstep.c | 14 ++ arch/powerpc/perf/callchain_64.c | 9 +- arch/powerpc/platforms/pseries/setup.c | 8 +- arch/powerpc/xmon/xmon.c | 1 + 28 files changed, 492 insertions(+), 57 deletions(-) -- 2.23.0
