linux-kernel - Re: [RFC][PATCH 6/6] objtool,x86: Rewrite retpoline thunk calls

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Message-ID: <20210220003920.GG26778@zn.tnic>
Date:   Sat, 20 Feb 2021 01:39:20 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org,
        pjt@...gle.com, mbenes@...e.cz, jgross@...e.com,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 6/6] objtool,x86: Rewrite retpoline thunk calls

On Fri, Feb 19, 2021 at 11:01:58PM +0100, Peter Zijlstra wrote:
> We could, but it so happens Joerg is also wanting negative features. 

Juergen.

> So I was thikning that perhaps we can convince Boris they're not
> really all that aweful after all :-)

Well, I'm not crazy about this, TBH - I totally agree with Josh:

"with objtool generating code, it's going to be a maze to figure out
where the generated code is coming from"

and without a real good reason to do this, what's the point? I know,
because we can. :-)

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette