search for: 7e00000

...lt is the following > message I receive during kernel initialization after rebooting from an > Xen hypervisor into a baremetal-kernel, without a power-cycle: > > [0.012815] dmar: DRHD: handling fault status reg 3 > [0.012868] dmar: DMAR:[DMA Read] Request device [07:00.0] fault addr 7e00000 > [0.012868] DMAR:[fault reason 02] Present bit in context entry is clear Presumably 07:00.0 is your soundcard, and apparently it did a DMA read to 0x7e00000, which wasn''t mapped by the IOMMU. > In addition to other hints, such as simple IO like changing the active > port on the...

...>> message I receive during kernel initialization after rebooting from an >> Xen hypervisor into a baremetal-kernel, without a power-cycle: >> >> [0.012815] dmar: DRHD: handling fault status reg 3 >> [0.012868] dmar: DMAR:[DMA Read] Request device [07:00.0] fault addr 7e00000 >> [0.012868] DMAR:[fault reason 02] Present bit in context entry is clear > > Presumably 07:00.0 is your soundcard, and apparently it did a DMA > read to 0x7e00000, which wasn''t mapped by the IOMMU. > >> In addition to other hints, such as simple IO like changing t...