From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: [PATCH v3 4/4] libxl: add support for vscsi
Date: Mon, 9 Mar 2015 17:08:31 +0100
Message-ID: <20150309160831.GA1755@aepfle.de>
References: <1425635156-2357-1-git-send-email-olaf@aepfle.de>
	<1425635156-2357-5-git-send-email-olaf@aepfle.de>
	<20150306143125.GX12103@zion.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
Content-Disposition: inline
In-Reply-To: <20150306143125.GX12103@zion.uk.xensource.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Wei Liu <wei.liu2@citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>, Ian Campbell <ian.campbell@citrix.com>, xen-devel@lists.xen.org
List-Id: xen-devel@lists.xenproject.org

On Fri, Mar 06, Wei Liu wrote:

> > +void libxl__device_vscsi_add(libxl__egc *egc, uint32_t domid,
> > +                             libxl_device_vscsi *vscsi,
> > +                             libxl__ao_device *aodev)
> You need to update this domain's JSON configuration. Cf.
> libxl__device_vtpm_add and friends. Also look at libxl_internal.h L2310.

Its not clear to me why every libxl__device_<type>_add copies the passed
in libxl_device_<type> into a local named <type>_saved. Why is it not
enough to work directly with the input? Its not obvious what the purpose
of that copy is, nothing seems to alter the input.

Olaf