linux-kernel - Re: [PATCH] arm64: vmlinux.lds.S: Drop redundant *.init.rodata.*

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Date:   Thu, 19 Nov 2020 08:18:35 +0100
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Youling Tang <tangyouling@...ngson.cn>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        David Brazdil <dbrazdil@...gle.com>,
        Mike Rapoport <rppt@...nel.org>,
        James Morse <james.morse@....com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: vmlinux.lds.S: Drop redundant *.init.rodata.*

On Thu, 19 Nov 2020 at 02:45, Youling Tang <tangyouling@...ngson.cn> wrote:
>
> We currently try to emit *.init.rodata.* twice, once in INIT_DATA, and once
> in the line immediately following it. As the two section definitions are
> identical, the latter is redundant and can be dropped.
>
> This patch drops the redundant *.init.rodata.* section definition.
>
> Signed-off-by: Youling Tang <tangyouling@...ngson.cn>

.init.rodata.* was added to INIT_DATA in
266ff2a8f51f02b429a987d87634697eb0d01d6a, so removing it here seems
reasonable. However, it does conflict with the for-next/lto branch in
the arm64 tree.

> ---
>  arch/arm64/kernel/vmlinux.lds.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
> index 1bda604..7dba3c4 100644
> --- a/arch/arm64/kernel/vmlinux.lds.S
> +++ b/arch/arm64/kernel/vmlinux.lds.S
> @@ -201,7 +201,7 @@ SECTIONS
>                 INIT_CALLS
>                 CON_INITCALL
>                 INIT_RAM_FS
> -               *(.init.rodata.* .init.bss)     /* from the EFI stub */
> +               *(.init.bss)    /* from the EFI stub */
>         }
>         .exit.data : {
>                 EXIT_DATA
> --
> 2.1.0
>