Re: [PATCH 2/5] riscv: sbi: Use IPI_MAX for SBI IPI muxing

On Sun, Aug 16, 2026 at 12:31 PM Guo Ren <[email protected]> wrote:
>
> From: "GUO Ren (XuanTie)" <[email protected]>
>
> Now that IPI_MAX is visible from <asm/smp.h>, replace the hard-coded
> BITS_PER_BYTE with the proper symbolic constant in the SBI IPI
> extension driver.
>
> No functional change; IPI_MAX is still 8.
>
> Signed-off-by: GUO Ren (XuanTie) <[email protected]>

LGTM.

Reviewed-by: Anup Patel <[email protected]>

Regards,
Anup

> ---
>  arch/riscv/kernel/sbi-ipi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/kernel/sbi-ipi.c b/arch/riscv/kernel/sbi-ipi.c
> index 0cc5559c08d8..eeec178a9b95 100644
> --- a/arch/riscv/kernel/sbi-ipi.c
> +++ b/arch/riscv/kernel/sbi-ipi.c
> @@ -57,7 +57,7 @@ void __init sbi_ipi_init(void)
>                 return;
>         }
>
> -       virq = ipi_mux_create(BITS_PER_BYTE, sbi_send_ipi);
> +       virq = ipi_mux_create(IPI_MAX, sbi_send_ipi);
>         if (virq <= 0) {
>                 pr_err("unable to create muxed IPIs\n");
>                 irq_dispose_mapping(sbi_ipi_virq);
> @@ -75,7 +75,7 @@ void __init sbi_ipi_init(void)
>                           "irqchip/sbi-ipi:starting",
>                           sbi_ipi_starting_cpu, NULL);
>
> -       riscv_ipi_set_virq_range(virq, BITS_PER_BYTE);
> +       riscv_ipi_set_virq_range(virq, IPI_MAX);
>         pr_info("providing IPIs using SBI IPI extension\n");
>
>         /*
> --
> 2.43.0
>

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