There's not enough info here to even begin to debug this. Intel doesn't provide drivers for 82576 VF for most of the versions of Windows being referenced. No indication of what version of the driver is being using for the NIC, no indication of what the Windows device manager reports for the device, no qemu log messages or host log messages, etc... Why is this a kernel bug vs a qemu bug?
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/877155 Title: VT-D NIC doesn't work in windows guest Status in QEMU: New Bug description: [This should be a kvm kernel bug. I met this issue with quemu and kvm for virtualization. For https://bugzilla.kernel.org is not available yet, I just file this bug here just for tracking. ] Environment: ------------ Host OS (ia32/ia32e/IA64):All Guest OS (ia32/ia32e/IA64):ia32e Guest OS Type (Linux/Windows):Linux kvm.git Commit:211978fb6c666f824ae8221baeaeeee7ee28efc1 qemu.git Commit:edbb7c0de56692868e6126c7ff7e8bf917f8d0e7 Host Kernel Version:3.1.0-rc9+ Hardware: Westmere-EP && SandyBridge platform Bug detailed description: -------------------------- Using qemu and kvm upstream, VT-D NIC and SR-IOV VF don't work in Windows guest. I tried Windows XP, Vista, Win7, Win2k8 as a guest. And I used 82572 NIC and 82576 Virtual Function to assign to windows guest, and got the same result. Reproduce steps: ---------------- 1.start a Windows guest with a NIC assigned: qemu-system-x86_64 -m 1024 -smp 2 -device pci-assign,host=08:00.0 -net none -hda Windows.img 2.check network in the Windows guest. (You'll find the assigned NIC doesn't work in guest.) Current result: ---------------- NIC doesn't work in Windows guest Expected result: ---------------- NIC will work. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/877155/+subscriptions
