Re: [PATCH 07/15] RISC-V: Remove AT_VECTOR_SIZE_ARCH from UAPI

On Mon, Mar 2, 2026 at 6:27 AM Thomas Weißschuh
<[email protected]> wrote:
>
> There is nothing userspace can do with this value. In the kernel is
> always combined with AT_VECTOR_SIZE_BASE, which is not exposed to
> userspace and also changes from time to time.
>
> Move the symbol to a kernel-internal header.
>
> Signed-off-by: Thomas Weißschuh <[email protected]>

Reviewed-by: Andy Chiu <[email protected]>

> ---
>  arch/riscv/include/asm/auxvec.h      | 13 +++++++++++++
>  arch/riscv/include/uapi/asm/auxvec.h |  2 --
>  2 files changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/include/asm/auxvec.h b/arch/riscv/include/asm/auxvec.h
> new file mode 100644
> index 000000000000..fb4233445276
> --- /dev/null
> +++ b/arch/riscv/include/asm/auxvec.h
> @@ -0,0 +1,13 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (C) 2012 ARM Ltd.
> + * Copyright (C) 2015 Regents of the University of California
> + */
> +
> +#ifndef _ASM_RISCV_AUXVEC_H
> +#define _ASM_RISCV_AUXVEC_H
> +
> +/* entries in ARCH_DLINFO */
> +#define AT_VECTOR_SIZE_ARCH    10
> +
> +#endif /* _UAPI_ASM_RISCV_AUXVEC_H */
> diff --git a/arch/riscv/include/uapi/asm/auxvec.h b/arch/riscv/include/uapi/asm/auxvec.h
> index 95050ebe9ad0..0a725f2aa2e7 100644
> --- a/arch/riscv/include/uapi/asm/auxvec.h
> +++ b/arch/riscv/include/uapi/asm/auxvec.h
> @@ -33,8 +33,6 @@
>  #define AT_L3_CACHESIZE                46
>  #define AT_L3_CACHEGEOMETRY    47
>
> -/* entries in ARCH_DLINFO */
> -#define AT_VECTOR_SIZE_ARCH    10
>  #define AT_MINSIGSTKSZ         51
>
>  #endif /* _UAPI_ASM_RISCV_AUXVEC_H */
>
> --
> 2.53.0
>
>
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