[PATCH v6 0/3] riscv: fix PIO helpers and add optimized percpu ops

[Yunhui Cui <cuiyunhui@bytedance.com>]

Changes in v6:
- Drop the extra PCI_IO_ADDR() helper; directly guard the RISC-V ins*/outs*
  helpers with CONFIG_HAS_IOPORT.
- Add the missing <asm/cmpxchg.h> include to arch/riscv/include/asm/percpu.h
  so cmpxchg_relaxed() and system_has_cmpxchg128() are visible.
- Clean up the two 8/16-bit LR/SC fallback asm blocks to use consistent
  old/new/field variable names.

Yunhui Cui (3):
  riscv: io: avoid null-pointer arithmetic in PIO helpers
  riscv: introduce percpu.h into include/asm
  riscv: store percpu offset into thread_info

 arch/riscv/include/asm/asm.h         |   6 +-
 arch/riscv/include/asm/io.h          |   8 +
 arch/riscv/include/asm/percpu.h      | 288 +++++++++++++++++++++++++++
 arch/riscv/include/asm/switch_to.h   |   8 +
 arch/riscv/include/asm/thread_info.h |   3 +-
 arch/riscv/kernel/asm-offsets.c      |   1 +
 arch/riscv/kernel/smpboot.c          |   8 +
 arch/riscv/net/bpf_jit_comp64.c      |   9 +-
 8 files changed, 317 insertions(+), 14 deletions(-)
 create mode 100644 arch/riscv/include/asm/percpu.h

-- 
2.39.5