Mailing List Archive: Unable to connect USB devices to an HVM vm

I'm trying to pass through USB devices from the host to an HVM VM, no
PVUSB or anything. Unfortunately, I can only add a controller, not any
devices.

my HVM configuration: https://pastebin.com/LGSYNYtw

I can hook up a controller, but as soon as I try to add a device:

root@nosgoth:/etc/xen/conf# xl usbdev-attach vcr hostbus=002
hostaddr=004
libxl: error: libxl_qmp.c:341:qmp_handle_error_response: Domain
26:received an error message from QMP server: 'usb-host' is not a valid
device model name
libxl: error: libxl_device.c:1435:device_addrm_aocomplete: unable to add
device
libxl_device_usbdev_add failed.

From what I understand the error message is a QEMU error. I'm running
xen 4.12.0 built from upstream on ubuntu 18.04.

I'm hoping this is a simple configuration option or something, but I'm
uncertain where to start, and googling the error just finds me QEMU
problems :(

Thanks in advance!

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To follow up. I was missing libusb support in QEMU. I have updated to
4.12.1 at the same time, and now my USB support mostly works.
Passthrough doesn't fail, at least.

On 2019-09-28 20:22, David Kowis wrote:
> I'm trying to pass through USB devices from the host to an HVM VM, no
> PVUSB or anything. Unfortunately, I can only add a controller, not any
> devices.
>
> my HVM configuration: https://pastebin.com/LGSYNYtw
>
> I can hook up a controller, but as soon as I try to add a device:
>
> root@nosgoth:/etc/xen/conf# xl usbdev-attach vcr hostbus=002
> hostaddr=004
> libxl: error: libxl_qmp.c:341:qmp_handle_error_response: Domain
> 26:received an error message from QMP server: 'usb-host' is not a
> valid device model name
> libxl: error: libxl_device.c:1435:device_addrm_aocomplete: unable to
> add device
> libxl_device_usbdev_add failed.
>
>
> From what I understand the error message is a QEMU error. I'm running
> xen 4.12.0 built from upstream on ubuntu 18.04.
>
> I'm hoping this is a simple configuration option or something, but I'm
> uncertain where to start, and googling the error just finds me QEMU
> problems :(
>
> Thanks in advance!
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-users

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