From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <thomas.monjalon@6wind.com>
Received: from mail-wm0-f47.google.com (mail-wm0-f47.google.com [74.125.82.47])
 by dpdk.org (Postfix) with ESMTP id EE90891FC
 for <dev@dpdk.org>; Fri, 30 Oct 2015 18:49:20 +0100 (CET)
Received: by wmff134 with SMTP id f134so17541035wmf.0
 for <dev@dpdk.org>; Fri, 30 Oct 2015 10:49:20 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=6wind_com.20150623.gappssmtp.com; s=20150623;
 h=from:to:cc:subject:date:message-id:organization:user-agent
 :in-reply-to:references:mime-version:content-transfer-encoding
 :content-type; bh=6+gG6Tp7Faewo/c2JpnRc72Gqzjv0CD/hv4OiFdBYP8=;
 b=P+PBhlGTC5cYRrsrc3nqXsyF9+remb+z/htgRfrjPtJcJPNe5eObzR5al7xKFIXC4X
 H5Jd61XPjvrSuHj9RNiWeuIsTccntTVNokRvUTZM/rxlALyGgvJ0YVGjcNP6DC2bEc3C
 DSxmrxI9BPC3V2zrx3DUFthOhmQ7CsbvhTwxOoPYl2uqnbtWjenoVKArM6MJPYLDon4B
 coV6nGRKvoz1hveipDaUKl9K0FR7fCZiaWmjy6Nlz5zFfOzyuGv62ZI82e46rcVqi4gA
 wo3+K4uzgmvohjxd7fGwp0FNAss+98F6aCQJ0n/Ekyvptx2QSfbvhg+vLbsOg+SitLEC
 uAKA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20130820;
 h=x-gm-message-state:from:to:cc:subject:date:message-id:organization
 :user-agent:in-reply-to:references:mime-version
 :content-transfer-encoding:content-type;
 bh=6+gG6Tp7Faewo/c2JpnRc72Gqzjv0CD/hv4OiFdBYP8=;
 b=S55GFH3p0zmlpNam+VYSic59qabyK9fnp8fGJRC0w2kNcBDw/pZIsyW7ITIAcOSGZC
 NBKSaYRAqxZaxm8Ndcylhmw91ART4zonOJkLl9fa4ewfBvhc7dCSF/qHTsIRg3CZDXiB
 Kox4gpwKgm5BtcEltxKbSLKmr1dA/sbuq2VVXtkZJyWXxaBS/OI7RXzFdJp8Tdu8i1cQ
 uHK/jY36YDwPYtuw9KVHhTKWLA3xWrReA8efLfekY//kpCDNx2xAy3t1j4FxmosKd7fS
 HhO4UOdsDnDcN+Jz1sE+apET5jUq/iaYYk59ZqoETy2TQJCyiTFaUPRB7kTor3uZTzlp
 QNRg==
X-Gm-Message-State: ALoCoQkX0Knnqc3j6xtfbKQ7UsJIqscUXUnGaKRLtB22mdHMWEStrBb0JXk0e7YuKtd5z/RLHjWr
X-Received: by 10.28.141.136 with SMTP id p130mr5167283wmd.56.1446227360791;
 Fri, 30 Oct 2015 10:49:20 -0700 (PDT)
Received: from xps13.localnet (136-92-190-109.dsl.ovh.fr. [109.190.92.136])
 by smtp.gmail.com with ESMTPSA id c1sm8139372wjf.19.2015.10.30.10.49.20
 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
 Fri, 30 Oct 2015 10:49:20 -0700 (PDT)
From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel@redhat.com>
Date: Fri, 30 Oct 2015 18:48:09 +0100
Message-ID: <2413695.XHLO16SCPC@xps13>
Organization: 6WIND
User-Agent: KMail/4.14.10 (Linux/4.1.6-1-ARCH; KDE/4.14.11; x86_64; ; )
In-Reply-To: <20151018095438-mutt-send-email-mst@redhat.com>
References: <1444907319-26348-1-git-send-email-marcel@redhat.com>
 <20151016135230.GF9980@bricha3-MOBL3>
 <20151018095438-mutt-send-email-mst@redhat.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
Cc: 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 <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Fri, 30 Oct 2015 17:49:21 -0000

2015-10-18 10:04, Michael S. Tsirkin:
> On Fri, Oct 16, 2015 at 02:52:30PM +0100, Bruce Richardson wrote:
> > On Thu, Oct 15, 2015 at 04:18:59PM +0300, Michael S. Tsirkin wrote:
> > > On Thu, Oct 15, 2015 at 02:08:39PM +0300, Marcel Apfelbaum wrote:
> > > > Make vhost-user virtio 1.0 compatible by adding it to the
> > > > supported features and keeping the header length
> > > > the same as for mergeable RX buffers.
> > > > 
> > > > Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
> > > 
> > > Looks good to me
> > > 
> > > Acked-by: Michael S. Tsirkin <mst@redhat.com>
> > > 
> > > Just one question: dpdk is only supported on little-endian
> > > platforms at the moment, right?
> > 
> > A recent release added in support for PPC (patches supplied by IBM). For 
> > example, see: 
> > http://dpdk.org/browse/dpdk/commit/?id=704ba3770032c5a901719d3837845581d5a56b58
> > 
> > /Bruce
> 
> This will require more work then as 1.0 is a different
> endian-ness from 0.9. It's up to you guys to decide
> whether correct BE support is now a requirement for all
> new dpdk code. Let us know.

I'm not sure to understand.
Yes DPDK must work on big endian platforms.
Does this patch prevent from using virtio 0.9 with big endian?
Does it work with old QEMU not supporting virtio 1.0?