Re: [Qemu-devel] About virtio device hotplug in Q35!

[Zhong Yang]

On Mon, Jul 24, 2017 at 08:05:54AM +0300, Marcel Apfelbaum wrote:

+ Anthony

> On 24/07/2017 4:47, Zhong Yang wrote:
> >Hello all,
> >
> 
> Hi,
> 
> >When we did virtio device hotplug in Q35 platform, which always failed in 
> >hotplug.
> >
> 
> Can we please see the QEMU command line and the description
> of the hotplug steps?
> 
> >Would you please tell me how to configure VM to make virtio device hotplug 
> >work in Q35 platform?  Many thanks!
> >
> 
> The virtio devices can be hot-plugged into PCIe Root Ports:
> HMP example:
>  Start the VM with several PCIe Root Ports:
>    <qemu-bin> -M q35 -monitor stdio \
>                      -device pcie-root-port,id=rp1 \
>                      -device pcie-root port,id=rp2 \
>                      ...
>  Then from QEMU's hmp:
>      device-add virtio-net-pci,id=n1,bus=rp1
>      ...
> 
> 
> I hope it helps,
> Marcel
> 
> 
> >
> >Regards,
> >
> >Yang zhong
> >