Thanks. Does this work for e1000 as well?
Also, does it support pci hotplug?
Anjali
On 10/14/10 3:09 PM, "Anthony Liguori" <anthony@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx> 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.
>>>>
>>>>
>>>>
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>>
>
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