Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751916AbXBPKoH (ORCPT ); Fri, 16 Feb 2007 05:44:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751903AbXBPKoH (ORCPT ); Fri, 16 Feb 2007 05:44:07 -0500 Received: from 207.47.60.150.static.nextweb.net ([207.47.60.150]:18544 "EHLO webmail.xensource.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751916AbXBPKoG (ORCPT ); Fri, 16 Feb 2007 05:44:06 -0500 User-Agent: Microsoft-Entourage/11.2.5.060620 Date: Fri, 16 Feb 2007 10:44:02 +0000 Subject: Re: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config options and disable unsupported config options. From: Keir Fraser To: Zachary Amsden , Keir Fraser CC: Jeremy Fitzhardinge , , Andi Kleen , Dan Hecht , , Chris Wright , Ian Pratt , , Andrew Morton , Steven Hand Message-ID: Thread-Topic: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config options and disable unsupported config options. Thread-Index: AcdRt18dnW0/Pr2qEduvqQAX8io7RQ== In-Reply-To: <45D58531.4010808@vmware.com> Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 786 Lines: 19 On 16/2/07 10:19, "Zachary Amsden" wrote: > Doesn't stop_machine_run already take care of getting you out of all > kernel threads? So you can only be sleeping, not preempted, in which > case, this might not be an issue? It ensures that no (non-stopmachine) threads are running on any of the other CPUs, but it doesn't guarantee that all threads are at any form of quiescent point. They can certainly have private references to machine addresses. Otherwise, what would be the point of the process freezer? :-) -- Keir - 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/