Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932450AbWITW60 (ORCPT ); Wed, 20 Sep 2006 18:58:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932452AbWITW60 (ORCPT ); Wed, 20 Sep 2006 18:58:26 -0400 Received: from omx1-ext.sgi.com ([192.48.179.11]:29124 "EHLO omx1.americas.sgi.com") by vger.kernel.org with ESMTP id S932450AbWITW6Z (ORCPT ); Wed, 20 Sep 2006 18:58:25 -0400 Date: Wed, 20 Sep 2006 15:58:15 -0700 From: Paul Jackson To: rohitseth@google.com Cc: clameter@sgi.com, ckrm-tech@lists.sourceforge.net, devel@openvz.org, npiggin@suse.de, linux-kernel@vger.kernel.org Subject: Re: [patch00/05]: Containers(V2)- Introduction Message-Id: <20060920155815.33b03991.pj@sgi.com> In-Reply-To: <1158775678.8574.81.camel@galaxy.corp.google.com> References: <1158718568.29000.44.camel@galaxy.corp.google.com> <1158773208.8574.53.camel@galaxy.corp.google.com> <1158775678.8574.81.camel@galaxy.corp.google.com> Organization: SGI X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.3; i686-pc-linux-gnu) 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: 1197 Lines: 24 Seth wrote: > So now we depend on getting memory hot-plug to work for faking up these > nodes ...for the memory that is already present in the system. It just > does not sound logical. It's logical to me. Part of memory hotplug is adding physial memory, which is not an issue here. Part of it is adding another logical memory node (turning on another bit in node_online_map) and fixing up any code that thought a systems memory nodes were baked in at boottime. Perhaps the hardest part is the memory hot-un-plug, which would become more urgently needed with such use of fake numa nodes. The assumption that memory doesn't just up and vanish is non-trivial to remove from the kernel. A useful memory containerization should (IMHO) allow for both adding and removing such containers. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.925.600.0401 - 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/