1config DMABUF_HEAPS_SYSTEM 2 tristate "DMA-BUF System Heap" 3 depends on DMABUF_HEAPS 4 help 5 Choose this option to enable the system dmabuf heap. The system heap 6 is backed by pages from the buddy allocator. If in doubt, say Y. 7 8config DMABUF_HEAPS_SYSTEM_CC_SHARED 9 bool "DMA-BUF System Heap for decrypted CoCo VMs" 10 depends on DMABUF_HEAPS && ARCH_HAS_MEM_ENCRYPT && DMABUF_HEAPS_SYSTEM=y 11 help 12 Choose this option to enable the system_cc_shared dmabuf heap. This 13 allows allocating shared (decrypted) memory for confidential computing 14 (CoCo) VMs. 15 16config DMABUF_HEAPS_CMA 17 tristate "DMA-BUF CMA Heap" 18 depends on DMABUF_HEAPS && DMA_CMA 19 help 20 Choose this option to enable dma-buf CMA heap. This heap is backed 21 by the Contiguous Memory Allocator (CMA). If your system has these 22 regions, you should say Y here. 23