[Xen-users] Does VT-d make live migration of Xen more difficult by reducing the size of abstraction layer?

["Liang Yang" <multisyncfe991@xxxxxxxxxxx>]

Hi,

I'm just thinking about the pros and cons of VT-d. On one side, it does 
improve performance of guest domain to provide more direct access to HW by 
walking around hypervisor; while on the other side, it also reduce the 
abstraction layer of hypervisor which could make the live migration more 
difficult.
Could someone here give me a best balanced point when considering vt-d for 
Xen guest domains?
Thanks,

Liang


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