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:

• prompt: Enable separate DMA Contiguous Memory Area for each NUMA Node
• type: bool
• depends on: (none)
• defined in kernel/dma/Kconfig
• found in Linux kernels: 5.10–5.19, 6.0–6.5

Help text

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

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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