PCI-passthrough fails with Ubuntui kernel 3.5 and above
|Reported by:||ucrasher||Owned by:|
|Component:||host support||Version:||VirtualBox 4.3.4|
|Guest type:||Windows||Host type:||Linux|
Hi, was using PCI passthrough since 1.5 years. Host Ubuntu 12.04 with kernel 3.2.x, VB different versions (4.x to 4.3.4). After upgrade to raring kernel the PCI-passthrough fails. Trying kernel 3.5.x showed the same. The PCI device is one of the USB controllers on the mainboard. The fail situation prevents the windows7 in guest to start the root hub driver (error 43). BTW: USB passthrough is not an option to what I need to achieve. It is too slow if USB devices re-enumerate after a firmware flash, so I cannot debug firmware flashers.
Attachments: syslog and VB log for both kernels, and guest.vbox. I can do tests if you need that.