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** Currently only 2 virtual hotplug pci slots(6~7) are created so more than 2 vtd dev can't be hotplugged, but we can easily extend it in future. Three new commands are added: "xm pci-list domid" show the current assigned vtd device, like: VSlt domain bus slot func 0x6 0x0 0x02 0x00 0x0 "xm pci-detach" hot remove the specified vtd device by the virtual slot, like: xm pci-detach EdwinHVMDomainVtd 6 "xm pci-attach DomainID dom bus dev func [vslot]" hot add a new vtd device in the vslot. If no vslot specified, a free slot will be picked up. e.g. to insert '0000:03:00.0': xm pci-attach EdwinHVMDomainVtd 0 3 0 0 ** guest pci hotplug linux: pls. use 2.6.X and enable ACPI PCI hotplug ( Bus options=> PCI hotplug => ACPI PCI hotplug driver ) windows: 2000/xp/2003/vista are all okay Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>