From: Anthony Liguori <anthony@codemonkey.ws> To: Anjali Kulkarni <anjali@juniper.net> Cc: "Richard W.M. Jones" <rjones@redhat.com>, "Daniel P. Berrange" <berrange@redhat.com>, Avi Kivity <avi@redhat.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org> Subject: Re: [Qemu-devel] Hitting 29 NIC limit Date: Thu, 14 Oct 2010 17:17:36 -0500 [thread overview] Message-ID: <4CB78180.7050001@codemonkey.ws> (raw) In-Reply-To: <C8DCCE4E.301FF%anjali@juniper.net> On 10/14/2010 05:12 PM, Anjali Kulkarni wrote: > Thanks. Does this work for e1000 as well? > Haven't tried. I don't know how various e1000 drivers would react. > Also, does it support pci hotplug? > No, but that's fixable down the road. Regards, Anthony Liguori > Anjali > > On 10/14/10 3:09 PM, "Anthony Liguori"<anthony@codemonkey.ws> 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"<anthony@codemonkey.ws> 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 >>>> >>>> >>> >>> >> >
WARNING: multiple messages have this Message-ID (diff)
From: Anthony Liguori <anthony@codemonkey.ws> To: Anjali Kulkarni <anjali@juniper.net> Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "Richard W.M. Jones" <rjones@redhat.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, Avi Kivity <avi@redhat.com> Subject: Re: [Qemu-devel] Hitting 29 NIC limit Date: Thu, 14 Oct 2010 17:17:36 -0500 [thread overview] Message-ID: <4CB78180.7050001@codemonkey.ws> (raw) In-Reply-To: <C8DCCE4E.301FF%anjali@juniper.net> On 10/14/2010 05:12 PM, Anjali Kulkarni wrote: > Thanks. Does this work for e1000 as well? > Haven't tried. I don't know how various e1000 drivers would react. > Also, does it support pci hotplug? > No, but that's fixable down the road. Regards, Anthony Liguori > Anjali > > On 10/14/10 3:09 PM, "Anthony Liguori"<anthony@codemonkey.ws> 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"<anthony@codemonkey.ws> 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 >>>> >>>> >>> >>> >> >
next prev parent reply other threads:[~2010-10-14 22:17 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-10-05 14:48 8 NIC limit linux_kvm 2010-10-05 15:24 ` Dustin Kirkland 2010-10-05 15:24 ` [Qemu-devel] " Dustin Kirkland [not found] ` <1286294888.11462.1398488135@webmail.messagingengine.com> [not found] ` <1286295603.7731.28.camel@x200> 2010-10-06 5:46 ` 8 NIC limit - patch - places limit at 32 linux_kvm 2010-10-06 5:46 ` [Qemu-devel] " linux_kvm 2010-10-06 12:54 ` Anthony Liguori 2010-10-06 17:11 ` linux_kvm 2010-10-07 1:39 ` Chris Wright 2010-10-13 22:18 ` [Qemu-devel] Hitting 29 NIC limit (was Re: 8 NIC limit - patch - places limit at 32) Anjali Kulkarni 2010-10-13 22:32 ` Hitting 29 NIC limit Anjali Kulkarni 2010-10-13 22:32 ` [Qemu-devel] " Anjali Kulkarni 2010-10-13 22:54 ` Anthony Liguori 2010-10-13 22:54 ` Anthony Liguori 2010-10-14 12:07 ` Avi Kivity 2010-10-14 12:07 ` Avi Kivity 2010-10-14 12:10 ` Daniel P. Berrange 2010-10-14 12:10 ` Daniel P. Berrange 2010-10-14 12:57 ` Anthony Liguori 2010-10-14 12:57 ` Anthony Liguori 2010-10-18 20:07 ` H. Peter Anvin 2010-10-18 20:07 ` H. Peter Anvin 2010-10-14 21:42 ` Richard W.M. Jones 2010-10-14 21:42 ` Richard W.M. Jones 2010-10-14 21:57 ` Anthony Liguori 2010-10-14 21:57 ` Anthony Liguori 2010-10-14 22:00 ` Anjali Kulkarni 2010-10-14 22:00 ` Anjali Kulkarni 2010-10-14 22:09 ` Anthony Liguori 2010-10-14 22:09 ` Anthony Liguori 2010-10-14 22:12 ` Anjali Kulkarni 2010-10-14 22:12 ` Anjali Kulkarni 2010-10-14 22:17 ` Anthony Liguori [this message] 2010-10-14 22:17 ` Anthony Liguori 2010-11-16 17:23 ` Michael S. Tsirkin 2010-11-16 17:23 ` [Qemu-devel] " Michael S. Tsirkin 2010-11-16 19:00 ` Anthony Liguori 2010-11-16 19:00 ` [Qemu-devel] " Anthony Liguori 2010-10-14 22:08 ` [Qemu-devel] " Richard W.M. Jones 2010-10-14 22:08 ` Richard W.M. Jones 2010-10-14 12:36 ` Markus Armbruster 2010-10-14 12:36 ` Markus Armbruster 2010-10-14 12:59 ` Anthony Liguori 2010-10-14 12:59 ` Anthony Liguori 2010-10-15 9:11 ` Markus Armbruster 2010-10-15 9:11 ` [Qemu-devel] " Markus Armbruster 2010-10-15 18:49 ` Passing in additional info to guest OS and e1000 test suite? Anjali Kulkarni 2010-10-15 18:49 ` [Qemu-devel] " Anjali Kulkarni 2010-10-15 20:02 ` Anthony Liguori 2010-10-15 20:02 ` [Qemu-devel] " Anthony Liguori 2010-10-14 12:54 ` [Qemu-devel] Hitting 29 NIC limit Anthony Liguori 2010-10-14 12:54 ` Anthony Liguori 2010-10-14 13:23 ` Avi Kivity 2010-10-14 13:23 ` Avi Kivity 2010-10-14 14:11 ` Anthony Liguori 2010-10-14 14:11 ` Anthony Liguori 2010-10-14 14:53 ` Avi Kivity 2010-10-14 14:53 ` Avi Kivity 2010-10-28 20:52 ` [Qemu-devel] Hitting 29 NIC limit (+Intel VT-c) linux_kvm 2010-11-16 17:21 ` Hitting 29 NIC limit Michael S. Tsirkin 2010-11-16 17:21 ` [Qemu-devel] " Michael S. Tsirkin [not found] ` <C9081994.3517C%anjali@juniper.net> [not found] ` <20101117105843.GB10168@redhat.com> 2010-11-18 3:09 ` Isaku Yamahata 2010-11-18 5:41 ` Wei Xu 2010-11-18 6:31 ` Isaku Yamahata 2010-11-18 6:46 ` Michael S. Tsirkin 2010-11-18 7:09 ` Isaku Yamahata 2010-11-18 7:15 ` Michael S. Tsirkin 2010-11-18 7:27 ` Isaku Yamahata 2010-11-18 11:54 ` Gerd Hoffmann 2010-11-18 23:55 ` Isaku Yamahata 2010-10-05 15:57 ` 8 " Markus Armbruster 2010-10-05 16:20 ` linux_kvm 2010-10-05 16:43 ` Brian Jackson
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