From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [PATCH v6 1/3] xenbus_client: Extend interface to support multi-page ring Date: Wed, 8 Apr 2015 14:26:14 +0100 Message-ID: <55252C76.8000001@citrix.com> References: <1428043501-13912-1-git-send-email-bob.liu@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Yfpzp-0007bo-Tv for xen-devel@lists.xenproject.org; Wed, 08 Apr 2015 13:26:22 +0000 In-Reply-To: <1428043501-13912-1-git-send-email-bob.liu@oracle.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Bob Liu , xen-devel@lists.xenproject.org Cc: jgross@suse.com, wei.liu2@citrix.com, paul.durrant@citrix.com, david.vrabel@citrix.com, Boris Ostrovsky , roger.pau@citrix.com List-Id: xen-devel@lists.xenproject.org On 03/04/15 07:44, Bob Liu wrote: > From: Wei Liu > > Originally Xen PV drivers only use single-page ring to pass along > information. This might limit the throughput between frontend and > backend. > > The patch extends Xenbus driver to support multi-page ring, which in > general should improve throughput if ring is the bottleneck. Changes to > various frontend / backend to adapt to the new interface are also > included. > > Affected Xen drivers: > * blkfront/back > * netfront/back > * pcifront/back > * scsifront/back > > The interface is documented, as before, in xenbus_client.c. Applied to devel/for-linus-4.1 in the expectation that a user of the new API is be ready shortly. > Change in V2: Please but changes after a --- separator in future. David