From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by wr-out-0506.google.com with SMTP id c57so657354wra for ; Fri, 09 Nov 2007 11:54:25 -0800 (PST) Message-ID: <6934efce0711091154x74fe4405q5a9e291b3d9780f0@mail.gmail.com> Date: Fri, 9 Nov 2007 11:54:24 -0800 From: "Jared Hulbert" Subject: Re: about page migration on UMA In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20071016191949.cd50f12f.kamezawa.hiroyu@jp.fujitsu.com> <20071016192341.1c3746df.kamezawa.hiroyu@jp.fujitsu.com> <20071017141609.0eb60539.kamezawa.hiroyu@jp.fujitsu.com> <20071017145009.e4a56c0d.kamezawa.hiroyu@jp.fujitsu.com> <02f001c8108c$a3818760$3708a8c0@arcapub.arca.com> <6934efce0711091131n1acd2ce1h7bb17f9f3cb0f235@mail.gmail.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: "Jacky(GuangXiang Lee)" , linux-mm@kvack.org List-ID: On 11/9/07, Christoph Lameter wrote: > On Fri, 9 Nov 2007, Jared Hulbert wrote: > > > For extreme low power systems it would be possible to shut down banks > > in SDRAM chips that were not full thereby saving power. That would > > require some defraging and migration to empty them prior to powering > > down those banks. > > Yes we have discussed ideas like that a couple of time. If you do have the > time then please make this work. You have my full support. So I would like to make this migration controlled by userspace. Are there mechanisms to allow that today? If you give me a starting point I'll look into something like this. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org