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CONFIG_DMA_RESTRICTED_POOL: DMA Restricted Pool

General informations

The Linux kernel configuration item CONFIG_DMA_RESTRICTED_POOL:

Help text

This enables support for restricted DMA pools which provide a level of DMA memory protection on systems with limited hardware protection capabilities, such as those lacking an IOMMU.

For more information see <Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt> and <kernel/dma/swiotlb.c>. If unsure, say "n".

Hardware

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