From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752461AbcHHQQC (ORCPT ); Mon, 8 Aug 2016 12:16:02 -0400 Received: from mga04.intel.com ([192.55.52.120]:16174 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752147AbcHHQP6 (ORCPT ); Mon, 8 Aug 2016 12:15:58 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,490,1464678000"; d="scan'208";a="1010557386" Subject: Re: [PATCH v3 kernel 0/7] Extend virtio-balloon for fast (de)inflating & fast live migration To: Liang Li , linux-kernel@vger.kernel.org References: <1470638134-24149-1-git-send-email-liang.z.li@intel.com> Cc: virtualization@lists.linux-foundation.org, linux-mm@kvack.org, virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, quintela@redhat.com, dgilbert@redhat.com From: Dave Hansen Message-ID: <57A8B03E.4080709@intel.com> Date: Mon, 8 Aug 2016 09:15:58 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <1470638134-24149-1-git-send-email-liang.z.li@intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/07/2016 11:35 PM, Liang Li wrote: > Dave Hansen suggested a new scheme to encode the data structure, > because of additional complexity, it's not implemented in v3. FWIW, I don't think it takes any additional complexity here, at least in the guest implementation side. The thing I suggested would just mean explicitly calling out that there was a single bitmap instead of implying it in the ABI. Do you think the scheme I suggested is the way to go?