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Message-ID: <CANXhq0rtY_zDcLn4_TH0F083e4K58L-V2ingTwPgyoPBXEnY=g@mail.gmail.com>
Date: Fri, 14 Mar 2025 16:27:37 +0800
From: Zong Li <zong.li@...ive.com>
To: Deepak Gupta <debug@...osinc.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
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Subject: Re: [PATCH v11 01/27] mm: VM_SHADOW_STACK definition for riscv
On Mon, Mar 10, 2025 at 11:42 PM Deepak Gupta <debug@...osinc.com> wrote:
>
> VM_HIGH_ARCH_5 is used for riscv
>
> Signed-off-by: Deepak Gupta <debug@...osinc.com>
> ---
> 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@...ive.com>
> --
> 2.34.1
>
>
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