linux-kernel - Re: [PATCH 0/4] objtool: Improve code generation for annotation macros

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Message-ID: <20251126100050.GT4067720@noisy.programming.kicks-ass.net>
Date: Wed, 26 Nov 2025 11:00:50 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Josh Poimboeuf <jpoimboe@...nel.org>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] objtool: Improve code generation for annotation
 macros

On Tue, Nov 25, 2025 at 10:06:56PM -0800, Josh Poimboeuf wrote:
> For tip/objtool/core.
> 
> As much as possible, undo the code generation damage introduced by
> ANNOTATE_DATA_SPECIAL:
> 
>   - Remove its usage in favor of SHF_MERGE + sh_entsize, where possible
> 
>   - Print the annotation on a single line:
> 
>       912: .pushsection ".discard.annotate_data", "M", @progbits, 8; .long 912b - .; .long 1; .popsection
> 
>   - Remove the trailing newline/tab; let the invoking code decide on the
>     appropriate separator for the given context
> 
> Josh Poimboeuf (4):
>   x86/alternative: Remove ANNOTATE_DATA_SPECIAL usage
>   x86/asm: Remove ANNOTATE_DATA_SPECIAL usage
>   objtool: Consolidate annotation macros
>   objtool: Remove newlines and tabs from annotation macros

Durr, this will conflict with tip/core/bugs. Let me ponder this a bit.