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Diffstat (limited to 'kernel/dma/Kconfig')
| -rw-r--r-- | kernel/dma/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index 847a9d1fa634..0ddfb5510fe4 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -118,6 +118,17 @@ config DMA_CMA If unsure, say "n". if DMA_CMA + +config DMA_PERNUMA_CMA + bool "Enable separate DMA Contiguous Memory Area for each NUMA Node" + default NUMA && ARM64 + help + 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. + comment "Default contiguous memory area size:" config CMA_SIZE_MBYTES |