[PATCH 0/5] riscv: Make IPI_MAX visible and use it consistently

[Guo Ren <guoren@kernel.org>]

From: "GUO Ren (XuanTie)" <guoren@kernel.org>

This series removes the implicit assumption that RISC-V supports exactly
eight IPI message types.

Currently, the SBI, CLINT and ACLINT SSWI IPI providers use
BITS_PER_BYTE when sizing the generic IPI mux, while IMSIC carries a
separate IMSIC_NR_IPI definition set to 8. These values happen to match
IPI_MAX today, but neither is the proper source of truth for the number
of RISC-V IPI message types.

Move enum ipi_message_type to asm/smp.h so IPI providers can use IPI_MAX
directly, then replace the BITS_PER_BYTE and IMSIC_NR_IPI uses with
IPI_MAX.

This also makes adding future RISC-V IPI message types independent of
the current eight-entry assumption.

GUO Ren (XuanTie) (5):
  riscv: smp: Move enum ipi_message_type to asm/smp.h
  riscv: sbi: Use IPI_MAX for SBI IPI muxing
  clocksource: clint: Use IPI_MAX for IPI muxing
  irqchip/aclint-sswi: Use IPI_MAX for IPI muxing
  irqchip/imsic: Use IPI_MAX instead of IMSIC_NR_IPI

 arch/riscv/include/asm/smp.h            | 12 ++++++++++++
 arch/riscv/kernel/sbi-ipi.c             |  4 ++--
 arch/riscv/kernel/smp.c                 | 12 ------------
 drivers/clocksource/timer-clint.c       |  4 ++--
 drivers/irqchip/irq-aclint-sswi.c       |  4 ++--
 drivers/irqchip/irq-riscv-imsic-early.c |  4 ++--
 drivers/irqchip/irq-riscv-imsic-state.h |  1 -
 7 files changed, 20 insertions(+), 21 deletions(-)

-- 
2.43.0


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