Hello, My Linux kernel is 2.6.32, and my machine has an Intel e1000 1Gbps NIC. The Guest OS is Windows XP. I use PCI passthrough to pass the e1000 NIC to the VM, so Windows XP can directly use this physical NIC and should has higher performance. I successfully install Intel PRO/1000 PT driver in XP. Then the NIC can work, and the performance is not bad (about 700Mbps). However, if I reboot XP, the strange thing happens. Just after reboot, the NIC can be used. But if I run some other programs with some IO traffic, no data can be transferred via this NIC from then on. There are no abnormal information in Windows event logs, and there are no warnings or errors for Intel PRO/1000 PT driver in Windows device manager. I can't ping the VM from any machines. Why doesn't Intel e1000 NIC work correctly after reboot? Another strange thing. If I re-install PRO/1000 PT driver, the NIC can be used again. No matter what applications I run in Guest OS, the NIC can work well as long as I don't reboot it. But after I reboot the Guest OS, I must re-install the NIC driver each time, otherwise the NIC can't work. Who knows the reason of this strange behavior for e1000 NIC in KVM Windows environment? Is it driver related? I also use Linux as the Guest OS, everything is well even I reboot the VM many times. Thanks a lot! flypen -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
