Bug 43328
| Summary: | VT-d/SR-IOV doesn't work in guest | ||
|---|---|---|---|
| Product: | Virtualization | Reporter: | Jay Ren (yongjie.ren) |
| Component: | kvm | Assignee: | virtualization_kvm |
| Status: | CLOSED CODE_FIX | ||
| Severity: | high | CC: | avi, florian, muli |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 3.4.0 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
guest lspci log
host lspci log guest dmesg log host dmesg log |
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Created attachment 73483 [details]
guest lspci log
Created attachment 73484 [details]
host lspci log
Created attachment 73485 [details]
guest dmesg log
Created attachment 73486 [details]
host dmesg log
A patch referencing this bug report has been merged in Linux v3.5-rc7: commit a76beb14123a69ca080f5a5425e28b786d62318d Author: Alex Williamson <alex.williamson@redhat.com> Date: Mon Jul 9 10:53:22 2012 -0600 KVM: Fix device assignment threaded irq handler I verified it based on Linux v3.5 tag. As comment #5 said, this bug has been fixed. Marked it as "verified". Verified, so let's close it. |
Environment: ------------ Host OS (ia32/ia32e/IA64):ia32e Guest OS (ia32/ia32e/IA64):ia32e Guest OS Type (Linux/Windows):Linux kvm.git Commit:b48b2c3e50433ff6f7e46186daa7f986bd960215 qemu-kvm Commit:18a188f66237e7b38fc8133d3862e5904c0e7ffb Host Kernel Version:3.4.0 Hardware:WSM-EP, Romley-EP Bug detailed description: -------------------------- Assign a VF or normal NIC to the guest, the guest cannot get IP address. Note:1. assign the VF of Intel 82576 NIC or 82599 NIC, the guest cannot get IP 2. hot plug a VF to the guest, the guest cannot get IP 3. assign a PF to the guest, the guest cannot get IP. kvm(next) + qemu-kvm = result b48b2c3e + 18a188f6 = bad 322728e5 + 18a188f6 = good Reproduce steps: ---------------- 1. ./pcistub.sh -h 08:10.0 ( to hide a device) 2. qemu-system-x86_64 -m 512 -device pci-assign,host=08:10.0 -net none -hda rhel6u1.qcow Current result: ---------------- The guest cannot get IP Expected result: ---------------- The guest can get IP Basic root-causing log: ---------------------- [root@vt-snb9 ~]# qemu-system-x86_64 -m 512 -device pci-assign,host=08:10.0 -net none -hda rhel6u1.qcow VNC server running on `::1:5900' assigned_dev_enable_msix: assign irq: Invalid argument fail to set MSI-X entry number for MSIX! Invalid argument assigned_dev_update_msix_mmio: Invalid argument fail to set MSI-X entry number for MSIX! Invalid argument assigned_dev_update_msix_mmio: Invalid argument