perf-kvm,  virt-win-reg,  pci-passthrough

virt-win-reg: 'verify_reg_cmd' uses right registry entry now.
pci-passthrough: missing default value for params.get("libvirt_pci_server_ip").
per-kvm: branch conditions in "if top:" and "if report:".
Errr, I think I got it. some case have no libvirt_pci_server_ip params, right? Okey. The root cause of the problem you met is the check below if (xxx is ENTER or XXX is ENHTER or XXX is ENTER). Fixing it is the right way to solve the problem.