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Re: [Xen-users] HVM DomU+Dom0 crash with PCI USB passthrough

On Wed, 31 Jul 2013 10:24:34 -0500, David Sutton <kantras@xxxxxxxxx> wrote:
On Wed, Jul 31, 2013 at 9:17 AM, Gordan Bobic  wrote:

What may be relevant is that I get the following message when I issue
 "xl create xenwin.cfg":
 libxl: error: libxl_pci.c:990:libxl__device_pci_reset: The kernel
 doesn't support reset from sysfs for PCI device 0000:00:12.0

 This isn't necessarily a problem - I see this reported for all
 my passthrough GPUs. It seems to be mostly harmless.

For reference, I also get that same error message on my install - From
running lspci on my main system:

00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
 00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB EHCI Controller

This is the USB controller I pass through to a Windows 7 domU, and
it's been working fine (for the most part; on rare occasions, my kvm
isn't detected correctly, but then I just replug it in and it works)

One other thing you may want to try is to try using the traditional
mode device model; add the following into your domU config:

device_model_version = "qemu-xen-traditional"

Yes, forgot to mention that, I am only using traditional at the
moment, which may or may not make any difference.


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