Re: [Qemu-devel] Help: Does Qemu support virtio-pci for net-device and disk device?

[Kevin Zhao <kevin.zhao@linaro.org>]

Hi  All,
   As discussed before, upstream are working about PCIE instead of PCI in
AArch64.
   Thanks for your efforts about this on AArch64 :-)
   If it convenient, could you tell me when we plan  to finish this task ?
and which qemu version will support this functions in the future?
   Big Thanks~

Best Regards,
Kevin

On 24 August 2016 at 09:52, Kevin Zhao <kevin.zhao@linaro.org> wrote:

> Great ~ Thanks for your valuable information~
> I will try with the xml and any update I will post here.
>
> On 18 August 2016 at 21:51, Andrea Bolognani <abologna@redhat.com> wrote:
>
>> On Thu, 2016-08-18 at 20:43 +0800, Kevin Zhao wrote:
>> > What's the minimum version of  Qemu that support virito-1.0?
>> > Does Qemu 2.6 works?
>>
>> 2.6 definitely has virtio 1.0 support, however libvirt does
>> not yet allow you to control whether a device uses 0.9, 1.0
>> or both. The default for 2.6 should be both IIRC.
>>
>> > Now I will manually add the slots and bus to pcie. Because
>> > I am not familiar with it,  if it convenient, could you give
>> > me an available xml file which PCIE disk and PCIE
>> > net device can work for machine virt ?
>>
>> The XML you're looking for is at the end of this message.
>>
>> Note that a Fedora 24 guest configured this way will not
>> boot at all if the machine type is virt-2.6; on the other
>> hand, an identically-configured RHEL 7.3 guest will boot
>> even with virt-2.6, but both the disk and the network
>> adapter will be legacy PCI instead of PCIe.
>>
>>
>> <domain type='kvm'>
>>   <name>abologna-f24</name>
>>   <uuid>f6d0428b-a034-4c4e-8ef2-f12f6aa9cab0</uuid>
>>   <memory unit='KiB'>2097152</memory>
>>   <currentMemory unit='KiB'>2097152</currentMemory>
>>   <vcpu placement='static'>4</vcpu>
>>   <os>
>>     <type arch='aarch64' machine='virt-2.7'>hvm</type>
>>     <loader readonly='yes' type='pflash'>/usr/share/AAVMF
>> /AAVMF_CODE.fd</loader>
>>     <nvram>/var/lib/libvirt/qemu/nvram/abologna-f24_VARS.fd</nvram>
>>     <boot dev='hd'/>
>>   </os>
>>   <features>
>>     <gic version='2'/>
>>   </features>
>>   <cpu mode='host-passthrough'/>
>>   <clock offset='utc'/>
>>   <on_poweroff>destroy</on_poweroff>
>>   <on_reboot>restart</on_reboot>
>>   <on_crash>restart</on_crash>
>>   <devices>
>>     <emulator>/usr/libexec/abologna-qemu-kvm</emulator>
>>     <disk type='file' device='disk'>
>>       <driver name='qemu' type='qcow2'/>
>>       <source file='/var/lib/libvirt/images/abologna-f24.qcow2'/>
>>       <target dev='vda' bus='virtio'/>
>>       <address type='pci' domain='0x0000' bus='0x01' slot='0x00'
>> function='0x0'/>
>>     </disk>
>>     <controller type='pci' index='0' model='pcie-root'/>
>>     <controller type='pci' index='1' model='pcie-root-port'>
>>       <model name='ioh3420'/>
>>       <target chassis='1' port='0x8'/>
>>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
>> function='0x0'/>
>>     </controller>
>>     <controller type='pci' index='2' model='pcie-root-port'>
>>       <model name='ioh3420'/>
>>       <target chassis='2' port='0x10'/>
>>       <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
>> function='0x0'/>
>>     </controller>
>>     <controller type='virtio-serial' index='0'>
>>       <address type='virtio-mmio'/>
>>     </controller>
>>     <interface type='network'>
>>       <mac address='52:54:00:10:07:41'/>
>>       <source network='default'/>
>>       <model type='virtio'/>
>>       <rom bar='off'/>
>>       <address type='pci' domain='0x0000' bus='0x02' slot='0x00'
>> function='0x0'/>
>>     </interface>
>>     <serial type='pty'>
>>       <target port='0'/>
>>     </serial>
>>     <console type='pty'>
>>       <target type='serial' port='0'/>
>>     </console>
>>     <channel type='unix'>
>>       <source mode='bind'/>
>>       <target type='virtio' name='org.qemu.guest_agent.0'/>
>>       <address type='virtio-serial' controller='0' bus='0' port='1'/>
>>     </channel>
>>   </devices>
>> </domain>
>>
>> --
>> Andrea Bolognani / Red Hat / Virtualization
>>
>
>