default or selected kernelversion does not have config value CONFIG_DMA_PERNUMA_CMA.
Result is shown for kernelversion 6.9.9
Enable separate DMA Contiguous Memory Area for each NUMA Node
configname: CONFIG_DMA_PERNUMA_CMA
Linux Kernel Configuration
└─>Library routines
└─>Enable separate DMA Contiguous Memory Area for each NUMA Node
In linux kernel since version 5.1 (release Date: 2019-05-05)
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.
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.