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[Qemu-devel] [Bug 877155] Re: VT-D NIC doesn't work in windows guest
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [Bug 877155] Re: VT-D NIC doesn't work in windows guest |
Date: |
Wed, 16 Nov 2011 22:13:33 -0000 |
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?
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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.
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- [Qemu-devel] [Bug 877155] Re: VT-D NIC doesn't work in windows guest,
Alex Williamson <=