Re: [PATCH] iommu: Use passthrough mode for the Intel IPUs

Hi Bingbu, On 4/19/21 12:57 PM, Bingbu Cao wrote: Intel IPU(Image Processing Unit) has its own (IO)MMU hardware, The IPU driver allocates its own page table that is not mapped via the DMA, and thus the Intel IOMMU driver blocks access giving this error: DMAR: DRHD: handling fault status reg 3 D

[PATCH] iommu: Use passthrough mode for the Intel IPUs

Intel IPU(Image Processing Unit) has its own (IO)MMU hardware, The IPU driver allocates its own page table that is not mapped via the DMA, and thus the Intel IOMMU driver blocks access giving this error: DMAR: DRHD: handling fault status reg 3 DMAR: [DMA Read] Request device [00:05.0] PASID ff