Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752695Ab0KVQmx (ORCPT ); Mon, 22 Nov 2010 11:42:53 -0500 Received: from one.firstfloor.org ([213.235.205.2]:37711 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751522Ab0KVQmw (ORCPT ); Mon, 22 Nov 2010 11:42:52 -0500 Date: Mon, 22 Nov 2010 17:42:47 +0100 From: Andi Kleen To: Peter Zijlstra Cc: castet.matthieu@free.fr, Lin Ming , Siarhei Liakh , Xuxian Jiang , Ingo Molnar , Arjan van de Ven , Andi Kleen , lkml , tglx Subject: Re: -tip tree resume fail, bisect to 5bd5a45(x86: Add NX protection for kernel data) Message-ID: <20101122164247.GC21836@basil.fritz.box> References: <1290410581.2405.24.camel@minggr.sh.intel.com> <1290431008.2072.119.camel@laptop> <1290443379.4cea9a73cd9ce@imp.free.fr> <1290443758.2072.318.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1290443758.2072.318.camel@laptop> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 715 Lines: 23 > That seems to be a S3 specific code path, that won't fix anything. > Simply do: > > echo 0 > /sys/devices/system/cpu/cpu1/online; > echo 1 > /sys/devices/system/cpu/cpu1/online; > > and your machine will explode.. The SMP startup trampoline is copied I believe and only executed in real mode without page tables. So it's perhaps not the trampoline, but the early startup code that ends up being broken. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/