Create VM with machine type Q35, does it worth?

[mmenaz]

Hi, I think that proxmox 3.3 and qemu 2.2 should be mature enough for VM with machine type Q35 (from year 2009) instead of the default i440FX (year 1996).
Is it a good choice for M$ Win7 Vm and GNU/Linux ones? What are the pro and cons? Will it become the new default or will it be surfaced as config option in the web interface?
Thanks

 

[spirit]

Currently it's only usefull if you need to emulator pci-express, mainly for passthrough.

They are some missing features like hotplug currenlty on q35.

 

[mmenaz]

Does it also use USB EHCI controller emulation instead of UHCI so I can "pass through" also USB 2.0 peripherals? Or emulated UHCI can manage them as well?

 

[spirit]

Does it also use USB EHCI controller emulation instead of UHCI so I can "pass through" also USB 2.0 peripherals? Or emulated UHCI can manage them as well?

yes, q35 have ehci + uhci by default