Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751961AbdGMMCM (ORCPT ); Thu, 13 Jul 2017 08:02:12 -0400 Received: from mx2.suse.de ([195.135.220.15]:53630 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751150AbdGMMCK (ORCPT ); Thu, 13 Jul 2017 08:02:10 -0400 Date: Thu, 13 Jul 2017 14:02:03 +0200 (CEST) From: Jiri Kosina X-X-Sender: jkosina@pobox.suse.cz To: Andi Kleen cc: Mike Galbraith , Josh Poimboeuf , x86@kernel.org, linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, Linus Torvalds , Andy Lutomirski , Jiri Slaby , Ingo Molnar , "H. Peter Anvin" , Peter Zijlstra Subject: Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf) In-Reply-To: <20170713044038.GE3044@two.firstfloor.org> Message-ID: References: <87wp7dmgoo.fsf@firstfloor.org> <1499914980.5107.18.camel@gmx.de> <20170713041524.GC3044@two.firstfloor.org> <1499920123.5107.29.camel@gmx.de> <20170713044038.GE3044@two.firstfloor.org> User-Agent: Alpine 2.20 (LSU 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 330 Lines: 11 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