FWIW, I'm using my "I/O Hook" (http://lwn.net/Articles/561359/) as a tool to test yinghai's IOAPIC patchset. It can be used to test any kind of hotplug. For people who don't yet have full hardware support and want to test the hotplug of IOAPIC, CPU, Memory, IOH, PCIe root, etc., it is an ideal tool. The latest version (v2) is at: http://lwn.net/Articles/561779/ Thanks Rui -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html