linux-kernel - Re: [PATCH 2/3] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH

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Message-ID: <mhng-81da4508-59e4-4b55-855a-f7d9c31ced50@palmerdabbelt-glaptop1>
Date:   Thu, 20 Aug 2020 13:44:57 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     zong.li@...ive.com
CC:     Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        zong.li@...ive.com
Subject:     Re: [PATCH 2/3] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

On Fri, 03 Jul 2020 01:57:54 PDT (-0700), zong.li@...ive.com wrote:
> AT_VECTOR_SIZE_ARCH should be defined with the maximum number of
> NEW_AUX_ENT entries that ARCH_DLINFO can contain, but it wasn't defined
> for RISC-V at all even though ARCH_DLINFO will contain one NEW_AUX_ENT
> for the VDSO address.
>
> Signed-off-by: Zong Li <zong.li@...ive.com>
> ---
>  arch/riscv/include/uapi/asm/auxvec.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/riscv/include/uapi/asm/auxvec.h b/arch/riscv/include/uapi/asm/auxvec.h
> index d86cb17bbabe..22e0ae888406 100644
> --- a/arch/riscv/include/uapi/asm/auxvec.h
> +++ b/arch/riscv/include/uapi/asm/auxvec.h
> @@ -10,4 +10,7 @@
>  /* vDSO location */
>  #define AT_SYSINFO_EHDR 33
>
> +/* entries in ARCH_DLINFO */
> +#define AT_VECTOR_SIZE_ARCH	1
> +
>  #endif /* _UAPI_ASM_RISCV_AUXVEC_H */

Reviewed-by: Palmer Dabbelt <palmerdabbelt@...gle.com>