On Fri, Sep 05, 2014 at 10:01:44PM -0600, Alex Williamson wrote:
> On Fri, 2014-09-05 at 20:00 -0700, Jason Newton wrote:
> > Hi,
> >
> > I have an AR9462 connected over minipcie, it came with the ASRock
> > FM2A88x-itx motherboard and I'm using an AMD A10-7850K cpu with it. When I
> > have IOMMU enabled, and this is desirable for opencl related things, the
> > AR9462 malfunctions with these two errors occurring:
> >
> > AMD-Vi: Event logged [INVALID_DEVICE_REQUEST device=00:00.1
> > address=0x000000fdf8080020 flags=0x0a00]
This means that the device 00:00.1 is sending to the interrupt/EOI
address-range while interrupt remapping is enabled. You can boot with
intremap=off on the kernel command line to work around this problem.
This looks either like another PCI aliasing issue or a 00:00.1 hidden
device is sending interrupt requests (which it is not allowed to do).
Joerg
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