linux-kernel - Re: [PATCH v2 00/14] objtool vs retpoline

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Date:   Wed, 29 Apr 2020 18:46:07 +0200 (CEST)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Peter Zijlstra <peterz@...radead.org>
cc:     jpoimboe@...hat.com, alexandre.chartre@...cle.com,
        linux-kernel@...r.kernel.org, jthierry@...hat.com,
        tglx@...utronix.de, x86@...nel.org
Subject: Re: [PATCH v2 00/14] objtool vs retpoline

On Tue, 28 Apr 2020, Peter Zijlstra wrote:

> Hi,
> 
> Based on Alexandre's patches, here's a few that go on top of tip/objtool/core.
> 
> With these patches on objtool can completely understand retpolines and RSB
> stuffing, which means it can emit valid ORC unwind information for them, which
> in turn means we can now unwind through a retpoline.
> 
> New since last time:
> 
>  - 1-3, alternatives vs ORC unwind
>  - 7-9: implement some suggestions from Julien
>  - addressed feedback

You can add my

Reviewed-by: Miroslav Benes <mbenes@...e.cz>

to patches 1A, 1B and 2-10 (objtool patches and updated smap fix). The 
other four patches should be fine too, but I am not well versed in the 
speculation stuff.

Miroslav