Hi Dominique and Francois,
Thank you for the report. I am CCing some person who I think could help.
I also have some questions (see below).
On 23/02/2024 16:00, GOURLOT Francois wrote:
Dear All,
We send you a message few days ago.
We have major performance with XEN USB Drivers. We use your driver to
load data in a device and we need USB3 High Speed USB protocole
Do you have a new issue of the HCI and NEC USB Xen Driver ?
[...]
*De :*LARRIEU Dominique <[email protected]>
*Envoyé :* jeudi 22 février 2024 13:58
*À :* [email protected]
*Cc :* WILLEMS Louis <[email protected]>; GRUO Nicolas
<[email protected]>; GOURLOT Francois
<[email protected]>; Kelly Choi <[email protected]>
*Objet :* Need help on USB port virtualization with Xen hypervisor
*Critère de diffusion :* Confidentiel
Dear all,
We are detectingseveral issues with USB port virtualization with the
Xen hypervisor.
Just to clarify, you are assigning the PCI USB bus (rather than just the
USB device) to the guest. Is that correct?
If so...
>
> Do you have a new issue of the HCI and NEC USB Xen Driver ?
... I am not sure what Xen driver you are talking about. If the USB bus
is assigned to the guest, then I would expect no specific Xen driver are
required. Do you have any pointer to the existing one?
- We cannot do PCI passthrough of the PCI usb bus on a Windows 10
1607 64-bit virtual machine. The bad result is a Windows blue screen.
- When we use the passthrough functionality on a Windows 21H2
virtual machine, we notice thatthe speed of the USB port is not high
speed but full speed on a USB 3.0 port
- We notice instabilities when using the nec-usb-xhci driver, USB
2.0 keys are not recognized by the Windows virtual machine
(incorrect descriptor)
Do you have any logs you could share from the guest OS? Also, would you
be able to share more details on how you configure the guest? (e.g. xl
configuration, libvirt...)?
We needyour helpto find a solution for these problems.
The Software used are :
Can you share some details of the HW you are using?
-Debian 11 version5.10.0-20
-Xen version4.14
Are minor version of Xen 4.14 are you using? Any patches on top?
Xen 4.14 has also been out of support for a few months now. If that's
possible, I would recommend to try a new Xen version (the last stable is
4.18) just in case your issue as been fixed in newer release.
-Windows 10 1607 and 21H2 for virtual machines. Virtual Machine HVM
Cheers,
--
Julien Grall
