Comment # 4 on bug 1021594 from Joerg Roedel

(In reply to tneo tneo from comment #3)
> Created attachment 712003 [details]
> Complete dmesg output as requested
> 
> Joerg as requested, see the attached output file.

Okay, you have a Kaveri bases AMD-APU, which should have an IOMMU. But the BIOS
does not initialize it, as there is no IVRS ACPI-table in your system.

Can you please check whether you BIOS has an IOMMU option and enable it if
present? The error reported here should disappear then.