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    SubjectRe: [2.6.35] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 BUG: unable to handle kernel NULL pointer dereference at 0000000000000198
    On Tue, Aug 10, 2010 at 06:57:45PM +0200, Sander Eikelenboom wrote:
    > The requested info is attached.
    > So that would mean a bios problem ? (those are not on my wishlist :-p)

    Yeah, looks like a BIOS problem. But the driver should handle that
    without crashing the system, so there is a bug in the driver too.

    Problem is:

    AMD-Vi: DEV_ALIAS_RANGE devid: 0a:01.0 flags: 00 devid_to: 0a:00.0
    AMD-Vi: DEV_RANGE_END devid: 0a:1f.7

    This means that PCI devices from 0a:01.0 to 0a:1f.7 may use their own
    device-id or 0a:00.0. But a device which id 0a:00.0 is not present in
    the system. From the lspci output this looks like your USB3 controler
    should alias to 09:00.0. I prepare a patch for you to fix the crash but
    I can't guarantee that your USB3 controler will work afterwards. If you
    see IO-Page-Faults please report them to me.

    Joerg



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