linux-kernel - Re: [PATCH] riscv: mm: Remove va_kernel_xip_pa

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Date:   Fri, 11 Jun 2021 20:55:47 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     jszhang3@...l.ustc.edu.cn
CC:     Paul Walmsley <paul.walmsley@...ive.com>, aou@...s.berkeley.edu,
        alex@...ti.fr, vitaly.wool@...sulko.com,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject:     Re: [PATCH] riscv: mm: Remove va_kernel_xip_pa_offset symbol from !XIP case

On Thu, 03 Jun 2021 05:52:37 PDT (-0700), jszhang3@...l.ustc.edu.cn wrote:
> The va_kernel_xip_pa_offset is only accessed for XIP case, so make it
> only available for XIP.
>
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---
>  arch/riscv/mm/init.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index ae32f78207f0..ca2826778989 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -194,10 +194,8 @@ EXPORT_SYMBOL(va_kernel_pa_offset);
>  #endif
>  #ifdef CONFIG_XIP_KERNEL
>  #define va_kernel_pa_offset    (*((unsigned long *)XIP_FIXUP(&va_kernel_pa_offset)))
> -#endif
>  unsigned long va_kernel_xip_pa_offset __ro_after_init;
>  EXPORT_SYMBOL(va_kernel_xip_pa_offset);
> -#ifdef CONFIG_XIP_KERNEL
>  #define va_kernel_xip_pa_offset        (*((unsigned long *)XIP_FIXUP(&va_kernel_xip_pa_offset)))
>  #endif
>  unsigned long pfn_base __ro_after_init;

This is used outside of XIP now.