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CONFIG_DMA_PERNUMA_CMA: Enable separate DMA Contiguous Memory Area for each NUMA Node

General informations

The Linux kernel configuration item CONFIG_DMA_PERNUMA_CMA:

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Enable this option to get pernuma CMA areas so that devices like ARM64 SMMU can get local memory by DMA coherent APIs.

You can set the size of pernuma CMA by specifying "cma_pernuma=size" on the kernel's command line.

Hardware

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