[PATCH 0/6] powerpc/64: Build with PC-Relative addressing

[Nicholas Piggin <npiggin@gmail.com>]

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