linux-kernel - Re: [RFC v5 12/57] objtool: check: Allow jumps from an alternative group to itself

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Date:   Mon, 20 Jan 2020 15:56:56 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Julien Thierry <jthierry@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        jpoimboe@...hat.com, raphael.gault@....com,
        catalin.marinas@....com, will@...nel.org
Subject: Re: [RFC v5 12/57] objtool: check: Allow jumps from an alternative
 group to itself

On Thu, Jan 09, 2020 at 04:02:15PM +0000, Julien Thierry wrote:
> Alternatives can contain instructions that jump to another instruction
> in the same alternative group. This is actually a common pattern on
> arm64.

LL/SC I bet...