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:".
Why the default value of server_ip is "". IIRC, it should be ENTER.YOUR.SERVER.IP. At the same time, net_ip should be ENTER.YOUR.NET.IP. The default values should be same with the value in config file by default, right?
Another question? why you hit this value? do you really want to run this test with "libvirt_pci_server_ip = '' " in libvirt_pci_passthrough.cfg???