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

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Message-ID: <YlfWynPt6MGR5BZP@hirez.programming.kicks-ass.net>
Date:   Thu, 14 Apr 2022 10:09:46 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
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 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