linux-kernel - Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)

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Date:   Thu, 13 Jul 2017 14:02:03 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Andi Kleen <andi@...stfloor.org>
cc:     Mike Galbraith <efault@....de>,
        Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>, Jiri Slaby <jslaby@...e.cz>,
        Ingo Molnar <mingo@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)

On Wed, 12 Jul 2017, Andi Kleen wrote:

> It's somewhat surprising. It would be good to under stand why that 
> happens. Is it icache misses, data cache misses for the stack, or simply 
> more instructions executed, or worse tail calls?

http://lkml.kernel.org/r/20170602104048.jkkzssljsompjdwy@suse.de

-- 
Jiri Kosina
SUSE Labs