From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anjali Kulkarni Subject: Re: [Qemu-devel] Hitting 29 NIC limit Date: Thu, 14 Oct 2010 15:12:14 -0700 Message-ID: References: <4CB77F91.2050801@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Cc: "Richard W.M. Jones" , "Daniel P. Berrange" , Avi Kivity , "kvm@vger.kernel.org" , "qemu-devel@nongnu.org" To: Anthony Liguori Return-path: Received: from exprod7og126.obsmtp.com ([64.18.2.206]:60275 "EHLO exprod7og126.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756162Ab0JNWOk convert rfc822-to-8bit (ORCPT ); Thu, 14 Oct 2010 18:14:40 -0400 In-Reply-To: <4CB77F91.2050801@codemonkey.ws> Content-Language: en-US Sender: kvm-owner@vger.kernel.org List-ID: Thanks. Does this work for e1000 as well? Also, does it support pci hotplug? Anjali On 10/14/10 3:09 PM, "Anthony Liguori" wrote: > On 10/14/2010 05:00 PM, Anjali Kulkarni wrote: >> Can you send me pointers to the qdev documentation? How can I use it? Will >> it allow us to scale above the 32 PCI limit? >> > > It's all below. You just have to create a PCI device and mark the > multifunction flag to on and then assign it a PCI address that includes > a function number. Then you can pack 8 virtio PCI devices into a single > slot. > > Regards, > > Anthony Liguori > >> Anjali >> >> >> On 10/14/10 2:57 PM, "Anthony Liguori" wrote: >> >> >>> On 10/14/2010 04:42 PM, Richard W.M. Jones wrote: >>> >>>> On Thu, Oct 14, 2010 at 01:10:47PM +0100, Daniel P. Berrange wrote: >>>> >>>> >>>>> Or a PCI bridge to wire up more PCI buses, so we raise the max limit for >>>>> any type of device we emulate. >>>>> >>>>> >>>> Break the 29/30/31 virtio-blk limit ... please! >>>> >>>> >>> It was broken ages ago: >>> >>> anthony@howler:~$ wc -l /proc/partitions; tail /proc/partitions >>> 422 /proc/partitions >>> 251 1618 1 vdcx2 >>> 251 1621 489951 vdcx5 >>> 251 1632 10485760 vdcy >>> 251 1633 9992398 vdcy1 >>> 251 1634 1 vdcy2 >>> 251 1637 489951 vdcy5 >>> 251 1648 10485760 vdcz >>> 251 1649 9992398 vdcz1 >>> 251 1650 1 vdcz2 >>> 251 1653 489951 vdcz5 >>> >>> This is what makes qdev so useful. >>> >>> args="" >>> for slot in 5 6 7 8 9 10 11 12 13 14 15 16 17; do >>> for fn in 0 1 2 3 4 5 6 7; do >>> args="$args -drive >>> file=/home/anthony/images/linux.img,if=none,snapshot=on,id=disk${slot}_${fn}>>> " >>> args="$args -device >>> virtio-blk-pci,addr=${slot}.${fn},drive=disk${slot}_${fn},multifunction=on" >>> done >>> done >>> >>> x86_64-softmmu/qemu-system-x86_64 -hda ~/images/linux.img ${args} >>> -enable-kvm -serial stdio >>> >>> Regards, >>> >>> Anthony Liguori >>> >>> >>>> Rich. >>>> >>>> >>>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe kvm" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> >