linux-kernel - Re: [PATCH 14/18] objtool: Add toolchain hacks cmdline option

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Date:   Thu, 14 Apr 2022 08:49:54 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Miroslav Benes <mbenes@...e.cz>
Subject: Re: [PATCH 14/18] objtool: Add toolchain hacks cmdline option

On Thu, Apr 14, 2022 at 10:09:46AM +0200, Peter Zijlstra wrote:
> On Wed, Apr 13, 2022 at 04:19:49PM -0700, Josh Poimboeuf wrote:
> > Objtool secretly does a few awful hacks to overcome toolchain
> > limitations.  Make those hacks explicit (and optional for other arches)
> > by associating them with a new '--hacks' cmdline option and
> > corresponding CONFIG_HAVE_TOOLCHAIN_HACKS.
> 
> Should we either clarify the specific hacks done, or split this in two
> options?
> 
>   --hack-jump_label
>   --hack-noinstr

Yeah, maybe we should split them out somehow.

-- 
Josh