Re: [PATCH 10/15] riscv: poison SBI calls for M-mode

Atish Patra
2019-08-20T21:24:05Z

On Tue, 2019-08-13 at 17:47 +0200, Christoph Hellwig 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@lst.de>
> ---
> arch/riscv/include/asm/sbi.h | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/riscv/include/asm/sbi.h
> b/arch/riscv/include/asm/sbi.h
> index 21134b3ef404..1e17f07eadaf 100644
> --- a/arch/riscv/include/asm/sbi.h
> +++ b/arch/riscv/include/asm/sbi.h
> @@ -8,6 +8,7 @@
>
> #include <linux/types.h>
>
> +#ifndef CONFIG_M_MODE
> #define SBI_SET_TIMER 0
> #define SBI_CONSOLE_PUTCHAR 1
> #define SBI_CONSOLE_GETCHAR 2
> @@ -94,4 +95,5 @@ 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_M_MODE */
> +#endif /* _ASM_RISCV_SBI_H */

Reviewed-by: Atish Patra <atish.patra@wdc.com>

--
Regards,
Atish