Re: [Xen-users] xl / kernel can't reset pci device (USB2 controller)

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2013-02-06 at 20:54 +0000, Matthias wrote:
> Hi,
> 
> lately i have switched from xm and a patched opensuse kernel to xl and
> a vanilla kernel.
> 
> Now, when trying to pass my USB2 (OHCI) Host Controller to a domU,
> when starting and stopping, i get the following error:
> 
> libxl: error: libxl_pci.c:989:libxl__device_pci_reset: The kernel
> doesn't support reset from sysfs for PCI device 0000:00:12.0
> 
> The pci device is:
> 00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI
> SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
> 
> Since I am new to xl and this never happend before: Is this a problem
> or causes this issues? Or can i safely ignore it?

It might be a problem when detaching the device and attaching it to a
new domain or when rebooting the domain, but it very much depends on the
specific hardware, if you aren't seeing any problems then don't worry
about it.

Note that this isn't a new issue it is just that xl is more verbose
about failure to reset a device.

Ian.


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