linux-kernel - Re: [PATCH 20/20] objtool: Add Direction Flag validation

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Message-ID: <20190308211603.fpjbd5avcuoox6xf@treble>
Date:   Fri, 8 Mar 2019 15:16:03 -0600
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     torvalds@...ux-foundation.org, tglx@...utronix.de, hpa@...or.com,
        julien.thierry@....com, will.deacon@....com, luto@...capital.net,
        mingo@...nel.org, catalin.marinas@....com, james.morse@....com,
        valentin.schneider@....com, brgerst@...il.com, luto@...nel.org,
        bp@...en8.de, dvlasenk@...hat.com, linux-kernel@...r.kernel.org,
        dvyukov@...gle.com, rostedt@...dmis.org
Subject: Re: [PATCH 20/20] objtool: Add Direction Flag validation

On Thu, Mar 07, 2019 at 12:45:31PM +0100, Peter Zijlstra wrote:
> Having DF escape is BAD(tm).
> 
> Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Can you elaborate on why (in the patch description)?  Did this actually
find any occurrences?

-- 
Josh