On Mon, Jun 13, 2011 at 8:15 PM, Flypen CloudMe <flypen@xxxxxxxxx> wrote: > 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. What version of kvm are you using? Thanks, Alex -- 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
