Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933092AbaGWSZy (ORCPT ); Wed, 23 Jul 2014 14:25:54 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:54538 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932740AbaGWSZx (ORCPT ); Wed, 23 Jul 2014 14:25:53 -0400 Date: Wed, 23 Jul 2014 20:25:48 +0200 From: Peter Zijlstra To: Linus Torvalds Cc: Dietmar Eggemann , Michel =?iso-8859-1?Q?D=E4nzer?= , Ingo Molnar , Linux Kernel Mailing List Subject: Re: Random panic in load_balance() with 3.16-rc Message-ID: <20140723182548.GE3935@laptop> References: <53CF80EE.5050702@daenzer.net> <53CF844A.5050106@arm.com> <20140723111110.GT3935@laptop> <20140723113021.GP12054@laptop.lan> <20140723142454.GQ12054@laptop.lan> <20140723155526.GW3935@laptop> <20140723170446.GA3935@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 23, 2014 at 10:15:23AM -0700, Linus Torvalds wrote: > On Wed, Jul 23, 2014 at 10:04 AM, Peter Zijlstra wrote: > > On Wed, Jul 23, 2014 at 09:54:23AM -0700, Linus Torvalds wrote: > > > >> So the length is fine, and the disassembly shows that it is fixed (16 > >> 32-bit words - why the heck does it use "movsl" rather than "movsq", > >> whatever). > > > > Which is exactly right btw, he's got CONFIG_NR_CPUS=512 and 8*4*16=512. > > That's not my point. Why the f*ck does it use "movsl", when "movsq" > should work as well or better. Agreed, big question there. I was merely pointing out that the value is consistent with his .config. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/