linux-kernel - Re: [PATCH v4 mips-next 5/7] MIPS: vmlinux.lds.S: explicitly declare .got table

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Date:   Fri, 8 Jan 2021 14:17:28 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Alexander Lobakin <alobakin@...me>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Arnd Bergmann <arnd@...db.de>,
        Kees Cook <keescook@...omium.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Fangrui Song <maskray@...gle.com>,
        Huacai Chen <chenhuacai@...nel.org>,
        Pei Huang <huangpei@...ngson.cn>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Ingo Molnar <mingo@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Corey Minyard <cminyard@...sta.com>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, stable@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH v4 mips-next 5/7] MIPS: vmlinux.lds.S: explicitly declare
 .got table

On Thu, Jan 07, 2021 at 01:20:49PM +0000, Alexander Lobakin wrote:
> LLVM stack generates GOT table when building the kernel:
> 
> ld.lld: warning: <internal>:(.got) is being placed in '.got'
> 
> According to the debug assertions, it's not zero-sized and thus
> can't be handled the same way as .rel.dyn (like it's done for x86).
> Use the ARM/ARM64 path here and place it at the end of .text section.
> 
> Reported-by: Nathan Chancellor <natechancellor@...il.com>
> Signed-off-by: Alexander Lobakin <alobakin@...me>

Reviewed-by: Nathan Chancellor <natechancellor@...il.com>

> ---
>  arch/mips/kernel/vmlinux.lds.S | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
> index 0f736d60d43e..4709959f6985 100644
> --- a/arch/mips/kernel/vmlinux.lds.S
> +++ b/arch/mips/kernel/vmlinux.lds.S
> @@ -69,6 +69,7 @@ SECTIONS
>  		*(.text.*)
>  		*(.fixup)
>  		*(.gnu.warning)
> +		*(.got)
>  	} :text = 0
>  	_etext = .;	/* End of text section */
>  
> -- 
> 2.30.0
> 
>