https://bugzilla.kernel.org/show_bug.cgi?id=43339 Summary: Wrong Pci-Bridge Header Type check. Product: Virtualization Version: unspecified Kernel Version: 3.4 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm AssignedTo: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx ReportedBy: vedun@xxxxxxxxx Regression: No I have found bug in file virt/kvm/assigned-device.c 670 /* Don't allow bridges to be assigned */ 671 pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); 672 if ((header_type & PCI_HEADER_TYPE) != PCI_HEADER_TYPE_NORMAL) { 673 r = -EPERM; 674 goto out_put; 675 } This code doesn't check that device is PCI-Bridge. In my case header_type is 1, default value for PCI-Bridge PCI_HEADER_TYPE is 14(0xE) PCI_HEADER_TYPE_NORMAL is 0 So, 1 & 0xE == 0 thus KVM assigns pci-bridge device to VM successfully. -- 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
