From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263083AbTJJQi1 (ORCPT ); Fri, 10 Oct 2003 12:38:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263084AbTJJQi1 (ORCPT ); Fri, 10 Oct 2003 12:38:27 -0400 Received: from zcars04e.nortelnetworks.com ([47.129.242.56]:9106 "EHLO zcars04e.nortelnetworks.com") by vger.kernel.org with ESMTP id S263083AbTJJQiW (ORCPT ); Fri, 10 Oct 2003 12:38:22 -0400 Message-ID: <3F86DFED.2030507@nortelnetworks.com> Date: Fri, 10 Oct 2003 12:35:57 -0400 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Chris Friesen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8) Gecko/20020204 X-Accept-Language: en-us MIME-Version: 1.0 To: Mark Mielke Cc: William Lee Irwin III , G?bor L?n?rt , Stuart Longland , Stephan von Krawczynski , Fabian.Frederick@prov-liege.be, linux-kernel@vger.kernel.org Subject: Re: 2.7 thoughts References: <20031009115809.GE8370@vega.digitel2002.hu> <20031009165723.43ae9cb5.skraw@ithnet.com> <3F864F82.4050509@longlandclan.hopto.org> <20031010125137.4080a13b.skraw@ithnet.com> <3F86BD0E.4060607@longlandclan.hopto.org> <20031010143529.GT5112@vega.digitel2002.hu> <20031010144723.GC727@holomorphy.com> <20031010144837.GB12134@mark.mielke.cc> <20031010150122.GD727@holomorphy.com> <20031010155007.GA13825@mark.mielke.cc> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Mark Mielke wrote: > Note that I didn't say that the software > approach could *guarantee* immediate success. You wouldn't unplug the > CPU until your had successfully deregistered the CPU from having anything > scheduled for it. > > Is this not the way things (should) work? Note that if you're doing this for high availability purposes, you already need to have some way of handling a cpu that just dies in the middle of processing. Once you've done that, you can just re-use that to handle hot removal--it just gets treated like a fault. This is not to say that you can't try and shut it down nicely first, but its not a hard requirement. Chris -- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com