linux-kernel - Re: [PATCH 5/7] x86/speculation: Annotate intra-function calls

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Message-ID: <20200403172408.odvcsymwlyx6ises@treble>
Date:   Fri, 3 Apr 2020 12:24:08 -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 5/7] x86/speculation: Annotate intra-function calls

On Fri, Apr 03, 2020 at 07:18:36PM +0200, Peter Zijlstra wrote:
> What we need in this case though is only a different stack layout inside
> the alternative, and that is doable.

I'm not sure what you mean... any stack changes within the alternative
have to match exactly the stack changes at the same offsets of the
original code because ORC doesn't know the difference between the two.

-- 
Josh