Hi, I want to assign a pci card within a VM. It's a parallel card. >lspci -vv 08:08.0 Parallel controller: Timedia Technology Co Ltd SUN1888 (Dual IEEE1284 parallel port) (rev 01) (prog-if 02 [ECP]) Subsystem: Timedia Technology Co Ltd PAR4008A Physical Slot: 3 Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping+ SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 9 Region 0: I/O ports at 3008 [size=8] Region 1: I/O ports at 3000 [size=8] Kernel modules: parport_pc >lspci | grep IRQ Interrupt: pin A routed to IRQ 11 Interrupt: pin A routed to IRQ 19 Interrupt: pin B routed to IRQ 18 Interrupt: pin C routed to IRQ 18 Interrupt: pin C routed to IRQ 18 Interrupt: pin A routed to IRQ 23 Interrupt: pin B routed to IRQ 22 Interrupt: pin C routed to IRQ 21 Interrupt: pin A routed to IRQ 23 Interrupt: pin A routed to IRQ 75 Interrupt: pin B routed to IRQ 11 Interrupt: pin A routed to IRQ 16 Interrupt: pin A routed to IRQ 11 Interrupt: pin A routed to IRQ 9 Blacklist - /etc/modprobe.d/blacklist.conf - so the parport isn't loaded on the base system which is runing kvm # Parallel Port drivers blacklist parport blacklist parport_pc blacklist ppdev blacklist lp Now starting the Win7 VM with virt-manager - VM is starting but the pci card is not visible in the VM (little side note - a Ubuntu VM found the pci card/parallel port and it's possible to print on a connected printer) All VMs (Win and Ubuntu) produce the following errors several times in the log files: Failed to assign irq for "hostdev0": Input/output error Perhaps you are assigning a device that shares an IRQ with another device? After the start of a VM the pci card get's a new shared IRQ: >lspci -vv 08:08.0 Parallel controller: Timedia Technology Co Ltd SUN1888 (Dual IEEE1284 parallel port) (rev 01) (prog-if 02 [ECP]) Subsystem: Timedia Technology Co Ltd PAR4008A Physical Slot: 3 Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping+ SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 18 Region 0: I/O ports at 3008 [size=8] Region 1: I/O ports at 3000 [size=8] Kernel driver in use: pci-stub Kernel modules: parport_pc >lspci | grep IRQ Interrupt: pin A routed to IRQ 11 Interrupt: pin A routed to IRQ 19 Interrupt: pin B routed to IRQ 18 Interrupt: pin C routed to IRQ 18 Interrupt: pin C routed to IRQ 18 Interrupt: pin A routed to IRQ 23 Interrupt: pin B routed to IRQ 22 Interrupt: pin C routed to IRQ 21 Interrupt: pin A routed to IRQ 23 Interrupt: pin A routed to IRQ 75 Interrupt: pin B routed to IRQ 11 Interrupt: pin A routed to IRQ 16 Interrupt: pin A routed to IRQ 11 Interrupt: pin A routed to IRQ 18 dmesg after the Win VM is started (copied only the pci card related things) >dmesg [ 573.538537] pci-stub 0000:08:08.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 [ 573.754049] pci-stub 0000:08:08.0: restoring config space at offset 0xf (was 0x1ff, writing 0x109) [ 573.754068] pci-stub 0000:08:08.0: restoring config space at offset 0x5 (was 0x1, writing 0x3001) [ 573.754073] pci-stub 0000:08:08.0: restoring config space at offset 0x4 (was 0x1, writing 0x3009) [ 573.754082] pci-stub 0000:08:08.0: restoring config space at offset 0x1 (was 0x2800080, writing 0x28001c1) [ 574.622891] assign device 0:8:8.0 [ 583.340568] vnet0: no IPv6 routers present [ 615.177956] deassign device 0:8:8.0 [ 615.395652] pci-stub 0000:08:08.0: restoring config space at offset 0xf (was 0x1ff, writing 0x109) [ 615.395670] pci-stub 0000:08:08.0: restoring config space at offset 0x5 (was 0x1, writing 0x3001) [ 615.395676] pci-stub 0000:08:08.0: restoring config space at offset 0x4 (was 0x1, writing 0x3009) [ 615.395684] pci-stub 0000:08:08.0: restoring config space at offset 0x1 (was 0x2800080, writing 0x28001c0) [ 615.395699] pci-stub 0000:08:08.0: PCI INT A disabled dmesg after the Ubuntu VM with working printer is started (copied only the pci card related things) >dmesg [ 40.640650] pci-stub 0000:08:08.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 [ 40.855316] pci-stub 0000:08:08.0: restoring config space at offset 0xf (was 0x1ff, writing 0x109) [ 40.855332] pci-stub 0000:08:08.0: restoring config space at offset 0x5 (was 0x1, writing 0x3001) [ 40.855337] pci-stub 0000:08:08.0: restoring config space at offset 0x4 (was 0x1, writing 0x3009) [ 40.855345] pci-stub 0000:08:08.0: restoring config space at offset 0x1 (was 0x2800080, writing 0x28001c1) [ 41.089673] assign device 0:8:8.0 and after the vm is closed dsmesg displays this: [ 351.823889] pci-stub 0000:08:08.0: restoring config space at offset 0xf (was 0x1ff, writing 0x109) [ 351.823910] pci-stub 0000:08:08.0: restoring config space at offset 0x5 (was 0x1, writing 0x3001) [ 351.823917] pci-stub 0000:08:08.0: restoring config space at offset 0x4 (was 0x1, writing 0x3009) [ 351.823926] pci-stub 0000:08:08.0: restoring config space at offset 0x1 (was 0x2800080, writing 0x28001c1) [ 351.823945] pci-stub 0000:08:08.0: PCI INT A disabled Why does the Win VM deassign the pci card so fast (during win boot) and how can I change the behavior of pci-stub to route the pci card to a shared IRQ even if the card is on a non shared IRQ after boot. Thank you for your help Thomas -- 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
