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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <aTBecRhz5qN8O1UX@gmail.com>
Date: Wed, 3 Dec 2025 16:59:45 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] objtool: Improve code generation for annotation
 macros

* Peter Zijlstra <peterz@...radead.org> wrote:

> 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.

So Josh has resolved these conflicts based on latest -git
which has all these moving pieces integrated into a single
tree, so I've applied these fixes to tip:objtool/urgent.

Thanks,

	Ingo