> Am 01.02.2015 um 15:29 schrieb Alex Williamson <alex.williamson@xxxxxxxxxx>: > >> On Sun, 2015-02-01 at 08:08 +0100, Stefan Priebe wrote: >> Hi, >> >> since the above mentioned patch the passthrough of my USB controllers >> does not work anymore. >> >> dmesh shows: >> [ 37.692394] VFIO - User Level meta-driver version: 0.3 >> [ 37.696755] vfio-pci: probe of 0000:00:01.0 failed with error -22 >> [ 38.688986] vfio-pci: probe of 0000:00:01.0 failed with error -22 >> [ 38.689244] vfio-pci: probe of 0000:00:1c.0 failed with error -22 >> [ 39.696653] vfio-pci: probe of 0000:00:01.0 failed with error -22 >> [ 39.696749] vfio-pci: probe of 0000:00:1c.0 failed with error -22 >> >> While the text in the patch indicates that it was just a wrong check and >> it should never worked. I see a different behaviour as it was working >> fine before. > > These are PCIe root ports, they have never been supported by vfio-pci > and it has never been correct to bind them to vfio-pci. The IOMMU group > is considered viable with either pcieport or pci-stub bound to these > devices. I suggest leaving them untouched and bound to pcieport. Hi, how do I see whether it is a root port? I want to pass through for example a tv card. My guide tells me: Locate your card using "lspci". The address should be in the form of: 04:00.0 Greets, Stefan > Thanks, > > Alex > -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html