Lines Matching +full:memory +full:- +full:mapping

1 # SPDX-License-Identifier: GPL-2.0-only
16 # mapping fast path should select this option and set the dma_ops_bypass
43 # DMA_ATTR_WRITE_COMBINE.  Normally the "uncached" mapping should be what
98 	  starts with one memory pool at boot and it will allocate additional
99 	  pools as needed. To reduce run-time kernel memory requirements, you
119 	  DMA memory protection on systems with limited hardware protection
123 	  <Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt>
128 # Should be selected if we can mmap non-coherent mappings to userspace.
161 	bool "DMA Contiguous Memory Allocator"
164 	  This enables the Contiguous Memory Allocator which allows drivers
165 	  to allocate big physically-contiguous blocks of memory for use with
166 	  hardware components that do not support I/O map nor scatter-gather.
177 	bool "Enable separate DMA Contiguous Memory Area for NUMA Node"
181 	  can get local memory by DMA coherent APIs.
187 comment "Default contiguous memory area size:"
195 	  Defines the size (in MiB) of the default memory area for Contiguous
196 	  Memory Allocator.  If the size of 0 is selected, CMA is disabled by
201 	int "Percentage of total memory"
206 	  Defines the size of the default memory area for Contiguous Memory
207 	  Allocator as a percentage of the total memory in the system.
234 	  DMA mapping framework by default aligns all buffers to the smallest
237 	  for larger buffers it just a memory waste. With this parameter you can
250 	bool "Enable debugging of DMA-API usage"
255 	  drivers like double-freeing of DMA mappings or freeing mappings that
264 	bool "Enable benchmarking of streaming DMA mapping"