Re: [Xen-users] USB passtrough on xen 4.8

[TheMetMan <themetman@xxxxxxxxxxxxx>]

I am using xen 4.6 on CentOS 7 Dom0 with a Debian 8 DomU

I have a kernel option xen-pciback.passthrough=1 as one of my arguments in  /etc/default/grub under GRUB_CMDLINE_XEN_DEFAULT=

and my cfg file has the following lines in it pertaining to the USB Passthrough

extra = "root=/dev/xvda1 iommu=soft irqpoll"

pci=['00:1d.0,permissive=1,rdm_policy=relaxed,seize=1']

This is for a USB dongle and works fine.

Francis

---

From: "Roger Pau Monné" <roger.pau@xxxxxxxxxx>
To: "DRUILHE, Thomas (SOPRA STERIA GROUP SA)" <thomas.t.druilhe.external@xxxxxxxxxx>
Cc: xen-users@xxxxxxxxxxxxxxxxxxxx
Sent: Monday, 3 September, 2018 11:54:24
Subject: Re: [Xen-users] USB passtrough on xen 4.8

On Wed, Aug 29, 2018 at 08:49:34AM +0000, DRUILHE, Thomas (SOPRA STERIA GROUP SA) wrote:
> Hello
>
> I'm trying to use usb passtrough, dom0 is debian with xen 4.8 and domU is also a debian,
> I manage my vm's with virt manager, but when I attach an usb device (a sierra wireless modem) the device disappear from Dom0 but never appear in DomU
> Is there something to do in domU to get the device ?

What does lspci show inside of the DomU? Is the DomU PV or HVM?

Can you try to use xl instead of libvirt? I have no idea of how
libvirt will try to attach the device.

Roger.

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