Date: Wed, 12 Jul 2017 15:36:05 -0700
From: Andres Freund <andres@anarazel.de>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
        live-patching@vger.kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>, Jiri Slaby <jslaby@suse.cz>,
        Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>, Mike Galbraith <efault@gmx.de>
Subject: Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)
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Hi,

On 2017-07-12 17:32:25 -0500, Josh Poimboeuf wrote:
> If you want perf to be able to use ORC instead of DWARF for user space
> binaries, that's not currently possible, though I don't see any
> technical blockers for doing so.  Perf would need to be taught to read
> ORC data.

Right, that's what I was hoping for.


> And I think it should be possible to convert DWARF to ORC, assuming the
> DWARF data is trusted.  We could probably add an objtool subcommand for
> that.

That'd be pretty helpful.

Greetings,

Andres Freund