From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stephen@networkplumber.org>
Received: from mail-pf0-f177.google.com (mail-pf0-f177.google.com
 [209.85.192.177]) by dpdk.org (Postfix) with ESMTP id 796C1ADAC
 for <dev@dpdk.org>; Tue, 10 May 2016 17:59:02 +0200 (CEST)
Received: by mail-pf0-f177.google.com with SMTP id 206so7359740pfu.0
 for <dev@dpdk.org>; Tue, 10 May 2016 08:59:02 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=networkplumber-org.20150623.gappssmtp.com; s=20150623;
 h=date:from:to:cc:subject:message-id:in-reply-to:references
 :mime-version:content-transfer-encoding;
 bh=OzxZ8Kn+iN04AtQIpR+wZQCGeEyn0TYETfQ/BiJGID0=;
 b=RwR19fdSvQNxQ3nQsWnmNgK3f6jjSX5lTlVHe1V5m/LWLLP5lFzVXMsXjnNEj/tc2W
 GEsD/pbg4IQzvNwwr91iMCyNoeG1jKvLsJ0U6wAWv1hhmdon5Q4X+4ppjt1GkM4IZy9E
 HcEpApalw1gcrNiAwPmBPPKT7csMlJqydGU6kJGJ9cYtWrEJBiVLi44mgAekjDqptQJ2
 wsdr+LsvzVjLLj4eHREjKCp8V3y6LgZyo8Rwz7ebFVejELstDBwLMNBk3ksGPFLS99O6
 qdmrJz7PfJdBwI2rzpGYJFHMzOoueh5DxgZBxBH8Ph0DjdoJdrtLqj+pEkxwnqUIKLM7
 yREA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20130820;
 h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to
 :references:mime-version:content-transfer-encoding;
 bh=OzxZ8Kn+iN04AtQIpR+wZQCGeEyn0TYETfQ/BiJGID0=;
 b=fe8TOcbXffEU4c9R/RjhWZbaTBc4T1UNjuFRYaO4QkUNjyrVrXC2WS8xeBpVm7/Qu9
 3jE4bhlBiJSYblM4CkTB4hFKtMRyu4ve3vLce46i571SFYMATx5CWB8Y3grj0I5VtfP1
 64bno4paqjuvJC1QIkVMtwM2VoE5vPyzniYN9wv9NG0syMvykoBFSqMxTJrCA7LvGs/s
 GEZlvfYhRWv3+1oE4RQnponYsgBC38bofd0IxO0yWhkwqvGz2bIXdy7KpeT6jQnnQijB
 VZvXyNfDQdm650uDeLSvYOC0omXiDK5gu6P1szdqvjQmUqyQMrxLP7r1ZcX6/hFryssF
 X2KA==
X-Gm-Message-State: AOPr4FUICkneUUUItpmczOkqCMCYlPeO1pKGzPgBdQH/p2vKHgesCT6Wp475RReuRI4uDw==
X-Received: by 10.98.69.213 with SMTP id n82mr59587336pfi.48.1462895941892;
 Tue, 10 May 2016 08:59:01 -0700 (PDT)
Received: from xeon-e3 (static-50-53-72-186.bvtn.or.frontiernet.net.
 [50.53.72.186])
 by smtp.gmail.com with ESMTPSA id ey12sm5504209pac.26.2016.05.10.08.59.01
 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
 Tue, 10 May 2016 08:59:01 -0700 (PDT)
Date: Tue, 10 May 2016 08:59:15 -0700
From: Stephen Hemminger <stephen@networkplumber.org>
To: Zhe Tao <zhe.tao@intel.com>
Cc: dev@dpdk.org
Message-ID: <20160510085915.529b4af5@xeon-e3>
In-Reply-To: <1462879301-13570-1-git-send-email-zhe.tao@intel.com>
References: <1462879301-13570-1-git-send-email-zhe.tao@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Subject: Re: [dpdk-dev] [PATCH v1] igu_uio: fix IOMMU domain issue
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: Tue, 10 May 2016 15:59:02 -0000

On Tue, 10 May 2016 19:21:41 +0800
Zhe Tao <zhe.tao@intel.com> wrote:

> Problem:
> The following  operations will cause the igb_uio based DPDK
> operation failed.
> --Any device assignment through the kvm_assign_device interface,
> this can be the pci-assign method in QEMU
> --VFIO group attachment operation(attach to the container)
> this can happens in  vfio-pci assignment in QEMU


If you have an IOMMU why not use VFIO instead, it is better.