From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: Is there an interrupt mode PMD for virtio Date: Thu, 31 Dec 2015 09:09:37 -0800 Message-ID: <20151231090937.2ddcd14a@xeon-e3> References: <8D4E95C0-3361-4E31-856C-77A462B2C972@icloud.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: dev@dpdk.org To: HePeng Return-path: Received: from mail-pf0-f175.google.com (mail-pf0-f175.google.com [209.85.192.175]) by dpdk.org (Postfix) with ESMTP id 52740DE6 for ; Thu, 31 Dec 2015 18:09:28 +0100 (CET) Received: by mail-pf0-f175.google.com with SMTP id 65so113525874pff.3 for ; Thu, 31 Dec 2015 09:09:28 -0800 (PST) In-Reply-To: <8D4E95C0-3361-4E31-856C-77A462B2C972@icloud.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Tue, 29 Dec 2015 12:51:43 +0800 HePeng wrote: > Hi, > I am asking if there is an interrupt mode PMD for virtio driver. > I check with l3fwd-power code, it is based on VFIO driver. However, > it seems that current virtio driver does not support VFIO. > > Thanks. > HePeng I have a version that was posted once, that works but it required a different version of uio driver that provided MSI support. Since that uio driver required patching the kernel, and the kernel maintainer of UIO didn't want that patch, that work was abandoned. The intention is to use VFIO in no-IOMMU mode instead. Once VFIO with no-IOMMU is working, I will rework the virtio (and vmxnet3) changes to support that. If you want to help or do it your self, I can send the old code.