https://bugzilla.kernel.org/show_bug.cgi?id=55421 Summary: igb VF can't work in KVM guest Product: Virtualization Version: unspecified Kernel Version: 3.9.0-rc1 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm AssignedTo: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx ReportedBy: yongjie.ren@xxxxxxxxx Regression: No Environment: ------------ Host OS (ia32/ia32e/IA64):ia32e Guest OS (ia32/ia32e/IA64):ia32e Guest OS Type (Linux/Windows):Linux kvm.git next branch Commit:5da596078f915a62e39a20e582308eab91b88c9a qemu-kvm uq/master branch Commit:3e41a753551a906dd9ed66fb0fc34167a6af3ba0 Host Kernel Version:3.9.0-rc1 Hardware:SNB-EP, WSM-EP Bug detailed description: -------------------------- After assigning a igb VF to a guest or hot-plugging a VF to a guest, the VF cannot work in the guest. Note: 1. The VF of Intel 82599 NIC (ixgbe) can work in guest 2. The PF of Intel 82576 NIC or Intel I350 NIC (using igb driver) can work in guest This should be a kvm bug. kvm + qemu-kvm = result 5da59607 + 3e41a753 = bad 3ab66e8a + 3e41a753 = good Reproduce steps: ---------------- 1.start up a KVM host 2.assign a VF to a guest in qemu commandline: qemu-system-x86_64 --enable-kvm -m 1024 -smp 2 -device pci-assign,host=05:10.0 -net none -hda rhel6u3.img Current result: ---------------- the VF of cannot work in guest Expected result: ---------------- the VF can work in the guest -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- 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
