Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754112Ab3G2CDS (ORCPT ); Sun, 28 Jul 2013 22:03:18 -0400 Received: from ozlabs.org ([203.10.76.45]:50458 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752097Ab3G2CDR (ORCPT ); Sun, 28 Jul 2013 22:03:17 -0400 From: Rusty Russell To: Sudeep Dutt , Greg Kroah-Hartman , Arnd Bergmann , "Michael S. Tsirkin" , Rob Landley , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-doc@vger.kernel.org Cc: Nikhil Rao , Ashutosh Dixit , Caz Yokoyama , Dasaratharaman Chandramouli , Harshavardhan R Kharche , "Yaozu \(Eddie\) Dong" , Peter P Waskiewicz Jr , Sudeep Dutt Subject: Re: [PATCH 4/5] Intel MIC Card Driver Changes for Virtio Devices. In-Reply-To: References: User-Agent: Notmuch/0.15.2+81~gd2c8818 (http://notmuchmail.org) Emacs/23.4.1 (i686-pc-linux-gnu) Date: Mon, 29 Jul 2013 11:28:58 +0930 Message-ID: <87txje6s9p.fsf@rustcorp.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1149 Lines: 28 Sudeep Dutt writes: > From: Ashutosh Dixit > > This patch introduces the card "Virtio over PCIe" interface for > Intel MIC. It allows virtio drivers on the card to communicate with their > user space backends on the host via a device page. Ring 3 apps on the host > can add, remove and configure virtio devices. A thin MIC specific > virtio_config_ops is implemented which is borrowed heavily from previous > similar implementations in lguest and s390 @ > drivers/lguest/lguest_device.c > drivers/s390/kvm/kvm_virtio.c Wow, this is pretty cool! Note that the lguest implementation is a bit limited, but lguest doesn't have a real ABI, so we can simply change it if we wanted to. I assume you don't have that luxury. In particular, you may want to get rid of the historical align constant, and have explicit avail and used addresses. Cheers, Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/