[Xen-users] USB passtrough on xen 4.8

[DRUILHE, Thomas (SOPRA STERIA GROUP SA)]

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 ?

Thanks a lot
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[Roger Pau Monné]

Post by DRUILHE, Thomas (SOPRA STERIA GROUP SA)
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.

[TheMetMan]

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

To: "DRUILHE, Thomas (SOPRA STERIA GROUP SA)"
Sent: Monday, 3 September, 2018 11:54:24
Subject: Re: [Xen-users] USB passtrough on xen 4.8

Post by DRUILHE, Thomas (SOPRA STERIA GROUP SA)
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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