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

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Message-ID: <20200428201758.zwi5pfj7bpuvjwnw@treble>
Date:   Tue, 28 Apr 2020 15:17:58 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     alexandre.chartre@...cle.com, linux-kernel@...r.kernel.org,
        jthierry@...hat.com, tglx@...utronix.de, x86@...nel.org,
        mbenes@...e.cz
Subject: Re: [PATCH v2 00/14] objtool vs retpoline

On Tue, Apr 28, 2020 at 09:11:01PM +0200, 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

For patches 2-14:

  Acked-by: Josh Poimboeuf <jpoimboe@...hat.com>

Instead of patch 1, maybe you could grab Julien's patch to drop the
useless warning; and also grab the alt_group numbering and the
"orig->alt_group = true" bits from Alexandre's patch.

-- 
Josh