From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753251AbYBPIrT (ORCPT ); Sat, 16 Feb 2008 03:47:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751458AbYBPIrE (ORCPT ); Sat, 16 Feb 2008 03:47:04 -0500 Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:47992 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751339AbYBPIrB (ORCPT ); Sat, 16 Feb 2008 03:47:01 -0500 Message-ID: <47B6A2BE.6080201@qumranet.com> Date: Sat, 16 Feb 2008 10:45:50 +0200 From: Avi Kivity User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Andrew Morton CC: Christoph Lameter , Andrea Arcangeli , Robin Holt , Izik Eidus , kvm-devel@lists.sourceforge.net, Peter Zijlstra , general@lists.openfabrics.org, Steve Wise , Roland Dreier , Kanoj Sarcar , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com Subject: Re: [patch 1/6] mmu_notifier: Core code References: <20080215064859.384203497@sgi.com> <20080215064932.371510599@sgi.com> <20080215193719.262c03a1.akpm@linux-foundation.org> In-Reply-To: <20080215193719.262c03a1.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > How important is this feature to KVM? > Very. kvm pins pages that are referenced by the guest; a 64-bit guest will easily pin its entire memory with the kernel map. So this is critical for guest swapping to actually work. Other nice features like page migration are also enabled by this patch. -- Any sufficiently difficult bug is indistinguishable from a feature. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [patch 1/6] mmu_notifier: Core code Date: Sat, 16 Feb 2008 10:45:50 +0200 Message-ID: <47B6A2BE.6080201@qumranet.com> References: <20080215064859.384203497@sgi.com> <20080215064932.371510599@sgi.com> <20080215193719.262c03a1.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: steiner@sgi.com, Andrea Arcangeli , Peter Zijlstra , linux-mm@kvack.org, Kanoj Sarcar , Roland Dreier , Steve Wise , linux-kernel@vger.kernel.org, kvm-devel@lists.sourceforge.net, daniel.blueman@quadrics.com, Robin Holt , general@lists.openfabrics.org, Christoph Lameter To: Andrew Morton Return-path: In-Reply-To: <20080215193719.262c03a1.akpm@linux-foundation.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Andrew Morton wrote: > How important is this feature to KVM? > Very. kvm pins pages that are referenced by the guest; a 64-bit guest will easily pin its entire memory with the kernel map. So this is critical for guest swapping to actually work. Other nice features like page migration are also enabled by this patch. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <47B6A2BE.6080201@qumranet.com> Date: Sat, 16 Feb 2008 10:45:50 +0200 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [patch 1/6] mmu_notifier: Core code References: <20080215064859.384203497@sgi.com> <20080215064932.371510599@sgi.com> <20080215193719.262c03a1.akpm@linux-foundation.org> In-Reply-To: <20080215193719.262c03a1.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Christoph Lameter , Andrea Arcangeli , Robin Holt , Izik Eidus , kvm-devel@lists.sourceforge.net, Peter Zijlstra , general@lists.openfabrics.org, Steve Wise , Roland Dreier , Kanoj Sarcar , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com List-ID: Andrew Morton wrote: > How important is this feature to KVM? > Very. kvm pins pages that are referenced by the guest; a 64-bit guest will easily pin its entire memory with the kernel map. So this is critical for guest swapping to actually work. Other nice features like page migration are also enabled by this patch. -- Any sufficiently difficult bug is indistinguishable from a feature. -- 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