Lines Matching +full:restricted +full:- +full:dma +full:- +full:pool

1 # SPDX-License-Identifier: GPL-2.0-only
83 # Select this option if the architecture assumes DMA devices are coherent
94 	bool "Dynamic allocation of DMA bounce buffers"
99 	  starts with one memory pool at boot and it will allocate additional
100 	  pools as needed. To reduce run-time kernel memory requirements, you
101 	  may have to specify a smaller size of the initial pool using
111 	bool "DMA Restricted Pool"
114 	  This enables support for restricted DMA pools which provide a level of
115 	  DMA memory protection on systems with limited hardware protection
119 	  <Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt>
120 	  and <kernel/dma/swiotlb.c>.
124 # Should be selected if we can mmap non-coherent mappings to userspace.
146 	bool "DMA Contiguous Memory Allocator"
150 	  to allocate big physically-contiguous blocks of memory for use with
151 	  hardware components that do not support I/O map nor scatter-gather.
156 	  For more information see <kernel/dma/contiguous.c>.
162 	bool "Enable separate DMA Contiguous Memory Area for NUMA Node"
166 	  can get local memory by DMA coherent APIs.
219 	  DMA mapping framework by default aligns all buffers to the smallest
235 	bool "Enable debugging of DMA-API usage"
238 	  Enable this option to debug the use of the DMA API by device drivers.
240 	  drivers like double-freeing of DMA mappings or freeing mappings that
244 	  debug device drivers and dma interactions.
249 	bool "Debug DMA scatter-gather usage"
255 	  preparing DMA scatterlists.
259 	  preparing literal scatter-gather descriptors, where there is a risk of
260 	  unexpected behaviour from DMA API implementations if the scatterlist
261 	  is technically out-of-spec.
266 	bool "Enable benchmarking of streaming DMA mapping"
272 	  See tools/testing/selftests/dma/dma_map_benchmark.c