linux-kernel - Re: [PATCH V2 9/9] x86/speculation: Remove all ANNOTATE_NOSPEC

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Message-ID: <20200407133454.n55u5nx33ruj73gx@treble>
Date:   Tue, 7 Apr 2020 08:34:54 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Alexandre Chartre <alexandre.chartre@...cle.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, jthierry@...hat.com,
        tglx@...utronix.de
Subject: Re: [PATCH V2 9/9] x86/speculation: Remove all
 ANNOTATE_NOSPEC_ALTERNATIVE directives

On Tue, Apr 07, 2020 at 03:28:37PM +0200, Peter Zijlstra wrote:
> Josh, we should probably have objtool verify it doesn't emit ORC entries
> in alternative ranges.

Agreed, it might be as simple as checking for insn->alt_group in the
INSN_STACK check or in update_insn_state().

-- 
Josh