From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 2DCF36B003D for ; Mon, 30 Mar 2009 14:41:51 -0400 (EDT) Message-ID: <49D11287.4030307@redhat.com> Date: Mon, 30 Mar 2009 14:42:15 -0400 From: Rik van Riel MIME-Version: 1.0 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: owner-linux-mm@kvack.org 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 List-ID: 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, 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