The QEMU project is currently considering to move its bug tracking to another
system. For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state
back to "New" within the next 60 days, otherwise this report will be marked as
"Expired". Or mark it as "Fix Released" if the problem has been solved with a
newer version of QEMU already. Thank you and sorry for the inconvenience.
** Changed in: qemu
Status: New => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1505759
Title:
Usb passthrough of devices plugged to AMD FCH USB OHCI Controller
failing on q35.
Status in QEMU:
Incomplete
Bug description:
I'm trying to setup a q35 vm with windows 7 guest for vga passthrough.
The machine works well for this purpose, but the usb devices passed to
the vm does not. I receive the following errors on screen:
qemu-system-x86_64: libusb_release_interface: -4 [NO_DEVICE]
libusb: error [_open_sysfs_attr} open
/sys/bus/usb/devices/3-5/bConfigurationValue failed ret=-1 errno=2
qemu-system-x86_64: libusb_release_interface: -4 [NO_DEVICE]
libusb: error [_open_sysfs_attr} open
/sys/bus/usb/devices/4-1/bConfigurationValue failed ret=-1 errno=2
Disabling IRQ #18
Disabling IRQ #17
And from the system log I can see the following:
Oct 13 20:13:25 koalita kernel: vfio-pci 0000:01:00.1: enabling device (0400
-> 0402)
Oct 13 20:13:29 koalita kernel: usb 3-5: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:30 koalita kernel: usb 4-1: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:30 koalita kernel: usb 10-2: reset low-speed USB device number 2
using xhci_hcd
Oct 13 20:13:31 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:31 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:31 koalita kernel: usb 3-5: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:31 koalita kernel: usb 10-2: reset low-speed USB device number 2
using xhci_hcd
Oct 13 20:13:32 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:32 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:32 koalita kernel: usb 4-1: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:33 koalita kernel: usb 3-5: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:33 koalita kernel: usb 4-1: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:34 koalita kernel: usb 3-5: reset low-speed USB device number 2
using ohci-pci
Oct 13 20:13:34 koalita kernel: usb 10-2: reset low-speed USB device number 2
using xhci_hcd
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:35 koalita kernel: usb 10-2: reset low-speed USB device number 2
using xhci_hcd
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64
microframes, ep desc says 80 microframes
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64
microframes, ep desc says 80 microframes
I tried to any combination of usb devices, and even disabling the ICH9
usb devices to make the setup looks close to the 440fx machine that is
working for me.
Version of qemu is 2.2.1(all newer versions fails on usb passthrough,
even in 440fx machines), and kernel is 4.1.8.
The script to launch it is the following:
qemu-system-x86_64 -enable-kvm -M q35 -vga none -cpu host -smp
3,cores=3,threads=1 -m 6144 \
-L /usr/x86_64-pc-linux-gnu/usr/share/qemu \
-nodefaults -nodefconfig \
-device ioh3420,multifunction=on,id=pcie \
-device
vfio-pci,host=01:00.0,addr=1c.0,x-vga=on,multifunction=on,bus=pcie \
-device vfio-pci,host=01:00.1,addr=1c.1,bus=pcie \
-netdev user,id=user.0 -device virtio-net-pci,netdev=user.0 \
-device usb-ehci,id=ehci -device nec-usb-xhci,id=xhci \
-usb -usbdevice host:03f0:134a -usbdevice host:03f0:0024 -usbdevice
host:0079:0006 \
-drive file=q35_win7.img,format=raw,cache=none,aio=native,if=virtio
Thanks!
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1505759/+subscriptions
