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IOMMU disable in kernel

Question asked by Eli Mintz on Jan 20, 2019
Latest reply on Feb 1, 2019 by Yiping Wang


We have P2041RDB with DDC 1553 (Muxbus) PCIe card inside. In order to enable DMA mode of the card, the vendor requests to disable IOMMU support in the Linux kernel. The question is, what the impact of the IOMMU disabling?