linux-kernel - Re: [RFC][PATCH 22/22] x86: Remove .fixup section

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Message-ID: <20211104230050.nltxx3vjje72hc2c@treble>
Date:   Thu, 4 Nov 2021 16:00:50 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, mark.rutland@....com,
        dvyukov@...gle.com, seanjc@...gle.com, pbonzini@...hat.com,
        mbenes@...e.cz
Subject: Re: [RFC][PATCH 22/22] x86: Remove .fixup section

On Thu, Nov 04, 2021 at 05:47:51PM +0100, Peter Zijlstra wrote:
> No moar user, kill it dead.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> ---
>  arch/x86/entry/vdso/vdso-layout.lds.S |    1 -
>  arch/x86/kernel/vmlinux.lds.S         |    1 -
>  2 files changed, 2 deletions(-)
> 
> --- a/arch/x86/entry/vdso/vdso-layout.lds.S
> +++ b/arch/x86/entry/vdso/vdso-layout.lds.S
> @@ -77,7 +77,6 @@ SECTIONS
>  
>  	.text		: {
>  		*(.text*)
> -		*(.fixup)
>  	}						:text	=0x90909090,
>  
>  
> --- a/arch/x86/kernel/vmlinux.lds.S
> +++ b/arch/x86/kernel/vmlinux.lds.S
> @@ -137,7 +137,6 @@ SECTIONS
>  		ALIGN_ENTRY_TEXT_END
>  		SOFTIRQENTRY_TEXT
>  		STATIC_CALL_TEXT
> -		*(.fixup)
>  		*(.gnu.warning)
>  
>  #ifdef CONFIG_RETPOLINE

Objtool also has a reference to .fixup.

-- 
Josh