From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id C6773FE5 for ; Fri, 16 Oct 2015 09:56:39 +0200 (CEST) Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id 1BD51C0B83C0; Fri, 16 Oct 2015 07:56:39 +0000 (UTC) Received: from redhat.com (ovpn-116-130.ams2.redhat.com [10.36.116.130]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id t9G7uaT3018942; Fri, 16 Oct 2015 03:56:37 -0400 Date: Fri, 16 Oct 2015 10:56:35 +0300 From: "Michael S. Tsirkin" To: Andriy Berestovskyy Message-ID: <20151016105013-mutt-send-email-mst@redhat.com> References: <1444907319-26348-1-git-send-email-marcel@redhat.com> <20151015161150-mutt-send-email-mst@redhat.com> <20151016022438.GH3115@yliu-dev.sh.intel.com> <20151016091327-mutt-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 Cc: Marcel Apfelbaum , dev@dpdk.org Subject: Re: [dpdk-dev] [PATCH] vhost-user: enable virtio 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Oct 2015 07:56:40 -0000 On Fri, Oct 16, 2015 at 09:43:09AM +0200, Andriy Berestovskyy wrote: > Hi guys, > Just a minor note: ARM is bi-endian in fact. For instance, there are > both endians tool chains available on Linaro. > > Andriy Yea. BE support is around for legacy stuff. So I'm not sure it's all that important to support that mode in NFV/DPDK applications. If it becomes important, for virtio 0.9 you won't be able to support transparently in dpdk anyway - you'll need a new vhost-user message to get the endian-ness of the guest, and do byteswaps conditionally, adding overhead. Maybe going virtio 1 only is the sane thing to do for these applications. -- MST