linux-kernel - Re: [PATCH 05/15] riscv: poison SBI calls for M-mode

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Message-ID: <CAAhSdy3MjGvPuAtsfdtbxe9N8LG3FYjQh=6rLpUqx7r73nNiWw@mail.gmail.com>
Date:   Fri, 18 Oct 2019 08:23:00 +0530
From:   Anup Patel <anup@...infault.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Damien Le Moal <damien.lemoal@....com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 05/15] riscv: poison SBI calls for M-mode

On Thu, Oct 17, 2019 at 11:08 PM Christoph Hellwig <hch@....de> wrote:
>
> There is no SBI when we run in M-mode, so fail the compile for any code
> trying to use SBI calls.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  arch/riscv/include/asm/sbi.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
> index 21134b3ef404..b167af3e7470 100644
> --- a/arch/riscv/include/asm/sbi.h
> +++ b/arch/riscv/include/asm/sbi.h
> @@ -8,6 +8,7 @@
>
>  #include <linux/types.h>
>
> +#ifdef CONFIG_RISCV_SBI
>  #define SBI_SET_TIMER 0
>  #define SBI_CONSOLE_PUTCHAR 1
>  #define SBI_CONSOLE_GETCHAR 2
> @@ -93,5 +94,5 @@ static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
>  {
>         SBI_CALL_4(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask, start, size, asid);
>  }
> -
> -#endif
> +#endif /* CONFIG_RISCV_SBI */
> +#endif /* _ASM_RISCV_SBI_H */
> --
> 2.20.1
>
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv

LGTM.

Reviewed-by: Anup Patel <anup@...infault.org>

Regards,
Anup

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