linux-kernel - Re: [PATCH 08/46] static_call, lto: Mark static keys as _

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

Message-ID: <20221114185251.eq45bjri6tsv4nct@treble>
Date:   Mon, 14 Nov 2022 10:52:51 -0800
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     "Jiri Slaby (SUSE)" <jirislaby@...nel.org>,
        linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
        Jason Baron <jbaron@...mai.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Martin Liska <mliska@...e.cz>, Jiri Slaby <jslaby@...e.cz>
Subject: Re: [PATCH 08/46] static_call, lto: Mark static keys as __visible

On Mon, Nov 14, 2022 at 04:51:07PM +0100, Peter Zijlstra wrote:
> On Mon, Nov 14, 2022 at 12:43:06PM +0100, Jiri Slaby (SUSE) wrote:
> > From: Andi Kleen <andi@...stfloor.org>
> > 
> > Symbols referenced from assembler (either directly or e.f. from
> > DEFINE_STATIC_KEY()) need to be global and visible in gcc LTO because
> > they could end up in a different object file than the assembler. This
> > can lead to linker errors without this patch.
> > 
> > So mark static call functions as __visible, namely static keys here.
> 
> Why doesn't llvm-lto need this?
> 
> Also, why am I getting a random selection of the patchset?

Same, please Cc me on the whole set next time.

-- 
Josh