Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758597AbZC3SpK (ORCPT ); Mon, 30 Mar 2009 14:45:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757526AbZC3Sox (ORCPT ); Mon, 30 Mar 2009 14:44:53 -0400 Received: from mx2.redhat.com ([66.187.237.31]:40552 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757384AbZC3Sow (ORCPT ); Mon, 30 Mar 2009 14:44:52 -0400 Message-ID: <49D11287.4030307@redhat.com> Date: Mon, 30 Mar 2009 14:42:15 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 2.0.0.17 (X11/20080915) MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Dave Hansen , Martin Schwidefsky , akpm@osdl.org, nickpiggin@yahoo.com.au, frankeh@watson.ibm.com, virtualization@lists.osdl.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, hugh@veritas.com Subject: Re: [patch 0/6] Guest page hinting version 7. References: <20090327150905.819861420@de.ibm.com> <1238195024.8286.562.camel@nimitz> <20090329161253.3faffdeb@skybase> <1238428495.8286.638.camel@nimitz> <49D11184.3060002@goop.org> In-Reply-To: <49D11184.3060002@goop.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 658 Lines: 18 Jeremy Fitzhardinge wrote: > That said, people have been looking at tracking block IO to work out > when it might be useful to try and share pages between guests under Xen. Tracking block IO seems like a bass-ackwards way to figure out what the contents of a memory page are. The KVM KSM code has a simpler, yet still efficient, way of figuring out which memory pages can be shared. -- All rights reversed. -- 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/