From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f197.google.com (mail-qk0-f197.google.com [209.85.220.197]) by kanga.kvack.org (Postfix) with ESMTP id 253E36B0038 for ; Mon, 6 Mar 2017 08:23:09 -0500 (EST) Received: by mail-qk0-f197.google.com with SMTP id j127so142949383qke.2 for ; Mon, 06 Mar 2017 05:23:09 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id k48si15421720qtf.287.2017.03.06.05.23.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Mar 2017 05:23:07 -0800 (PST) Subject: Re: [PATCH v7 kernel 5/5] This patch contains two parts: References: <1488519630-89058-1-git-send-email-wei.w.wang@intel.com> <1488519630-89058-6-git-send-email-wei.w.wang@intel.com> From: David Hildenbrand Message-ID: Date: Mon, 6 Mar 2017 14:23:02 +0100 MIME-Version: 1.0 In-Reply-To: <1488519630-89058-6-git-send-email-wei.w.wang@intel.com> Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Wei Wang , virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org Cc: Liang Li , Andrew Morton , Mel Gorman , "Michael S . Tsirkin" , Paolo Bonzini , Cornelia Huck , Amit Shah , Dave Hansen , Andrea Arcangeli , Liang Li Am 03.03.2017 um 06:40 schrieb Wei Wang: > From: Liang Li I'd prefer to split this into two parts then and to create proper subjects. If I remember correctly, the general concept was accepted by most reviewers. > > One is to add a new API to mm go get the unused page information. > The virtio balloon driver will use this new API added to get the > unused page info and send it to hypervisor(QEMU) to speed up live > migration. During sending the bitmap, some the pages may be modified > and are used by the guest, this inaccuracy can be corrected by the > dirty page logging mechanism. > > One is to add support the request for vm's unused page information, > QEMU can make use of unused page information and the dirty page > logging mechanism to skip the transportation of some of these unused > pages, this is very helpful to reduce the network traffic and speed > up the live migration process. -- Thanks, David -- 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