Re: [PATCH v11 01/27] mm: VM_SHADOW_STACK definition for riscv

[Zong Li]

On Mon, Mar 10, 2025 at 11:42 PM Deepak Gupta <debug@xxxxxxxxxxxx> wrote:
>
> VM_HIGH_ARCH_5 is used for riscv
>
> Signed-off-by: Deepak Gupta <debug@xxxxxxxxxxxx>
> ---
>  include/linux/mm.h | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 7b1068ddcbb7..1ef231cbc8fe 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -378,6 +378,13 @@ extern unsigned int kobjsize(const void *objp);
>  # define VM_SHADOW_STACK       VM_HIGH_ARCH_6
>  #endif
>
> +#if defined(CONFIG_RISCV_USER_CFI)
> +/*
> + * Following x86 and picking up the same bitpos.
> + */
> +# define VM_SHADOW_STACK       VM_HIGH_ARCH_5
> +#endif
> +
>  #ifndef VM_SHADOW_STACK
>  # define VM_SHADOW_STACK       VM_NONE
>  #endif
>

LGTM.

Reviewed-by: Zong Li <zong.li@xxxxxxxxxx>

> --
> 2.34.1
>
>
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