From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux_kvm@proinbox.com Subject: Re: [Qemu-devel] Hitting 29 NIC limit (+Intel VT-c) Date: Thu, 28 Oct 2010 16:52:54 -0400 Message-ID: <1288299174.5091.1402472133@webmail.messagingengine.com> References: <4CB6388A.30006@codemonkey.ws><4CB6F275.2060204@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Avi Kivity" , anthony@codemonkey.ws Return-path: Received: from out2.smtp.messagingengine.com ([66.111.4.26]:59049 "EHLO out2.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757856Ab0J1Uwz (ORCPT ); Thu, 28 Oct 2010 16:52:55 -0400 In-Reply-To: <4CB6F275.2060204@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, 14 Oct 2010 14:07 +0200, "Avi Kivity" wrote: > On 10/14/2010 12:54 AM, Anthony Liguori wrote: > > On 10/13/2010 05:32 PM, Anjali Kulkarni wrote: > What's the motivation for such a huge number of interfaces? Ultimately to bring multiple 10Gb bonds into a Vyatta guest. --- > BTW, I don't think it's possible to hot-add physical functions. I > believe I know of a card that supports dynamic add of physical functions > (pre-dating SR-IOV) I don't know what you're talking about, but it seems you have a better handle than I on this VT-c stuff, so perhaps misguidedly I'll direct my next question to you. Is additional configuration required to make use of SR-IOV & VTq? I don't immediateley understand how the queueing knows who is who in the absense of eth.vlan- or if I need to for that matter. My hope is that this is something like plug n play as long as kernel, host & driver versions are >foo, but I haven't yet found documentation to confirm it. For the sake of future queries, I've come across these references so far: http://download.intel.com/design/network/applnots/321211.pdf http://www.linux-kvm.org/wiki/images/6/6a/KvmForum2008%24kdf2008_7.pdf http://www.mail-archive.com/kvm@vger.kernel.org/msg27860.html http://www.mail-archive.com/kvm@vger.kernel.org/msg22721.html http://thread.gmane.org/gmane.linux.kernel.mm/38508 http://ark.intel.com/Product.aspx?id=36918