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

From: Josh Poimboeuf
Date: Tue Apr 28 2020 - 16:18:06 EST


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@xxxxxxxxxx>

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