This won't see a lot of real use until POWER10 is the oldest supported CPU for distros, but being as we're quite a unique user of toolchain I'd like to start ironing things out earlier rather than later. I'm making a list of observations here, https://github.com/linuxppc/issues/issues/455 and will take them to toolchan developers after the kernel work is a bit further along.
The series is working pretty well for me on pseries and powernv systems. Since RFC I've tidied things a bit and fixed the remaining hacks and known issues, mainly in the module loader. The first two patches are already posted to the list, boot code changes that aren't too interesting to toolchain. Thanks, Nick Nicholas Piggin (6): powerpc/64: Move initial base and TOC pointer calculation powerpc/64s: Run at the kernel virtual address earlier in boot powerpc/64: Add support to build with prefixed instructions powerpc: add CFUNC assembly label annotation powerpc/64: vmlinux support building with PCREL addresing powerpc/64: modules support building with PCREL addresing arch/powerpc/Kconfig | 6 + arch/powerpc/Makefile | 10 + arch/powerpc/include/asm/atomic.h | 24 +- arch/powerpc/include/asm/io.h | 37 +++ arch/powerpc/include/asm/module.h | 10 +- arch/powerpc/include/asm/paca.h | 2 + arch/powerpc/include/asm/ppc-opcode.h | 8 + arch/powerpc/include/asm/ppc_asm.h | 24 ++ arch/powerpc/include/asm/sections.h | 5 + arch/powerpc/include/asm/uaccess.h | 28 +- arch/powerpc/include/uapi/asm/elf.h | 4 + arch/powerpc/kernel/asm-offsets.c | 2 + arch/powerpc/kernel/exceptions-64s.S | 112 +++---- arch/powerpc/kernel/head_64.S | 130 ++++---- arch/powerpc/kernel/interrupt_64.S | 28 +- arch/powerpc/kernel/irq.c | 8 + arch/powerpc/kernel/misc_64.S | 2 +- arch/powerpc/kernel/module_64.c | 376 +++++++++++++++++++++--- arch/powerpc/kernel/paca.c | 2 + arch/powerpc/kernel/trace/ftrace.c | 52 +++- arch/powerpc/kernel/vdso/gettimeofday.S | 6 +- arch/powerpc/kernel/vector.S | 6 + arch/powerpc/kernel/vmlinux.lds.S | 6 + arch/powerpc/kvm/book3s_hv_rmhandlers.S | 16 +- arch/powerpc/lib/copypage_64.S | 10 + arch/powerpc/lib/copypage_power7.S | 4 +- arch/powerpc/lib/copyuser_power7.S | 8 +- arch/powerpc/lib/hweight_64.S | 8 +- arch/powerpc/lib/memcmp_64.S | 4 +- arch/powerpc/lib/memcpy_power7.S | 6 +- arch/powerpc/net/bpf_jit.h | 10 +- arch/powerpc/net/bpf_jit_comp64.c | 35 ++- arch/powerpc/platforms/Kconfig.cputype | 38 +++ arch/powerpc/platforms/pseries/hvCall.S | 4 +- arch/powerpc/xmon/xmon.c | 2 + 35 files changed, 814 insertions(+), 219 deletions(-) -- 2.40.0
