Component Type: kbuild config

Description: Maximum PAGE_SIZE order of alignment for contiguous buffers

More info: DMA mapping framework by default aligns all buffers to the smallest PAGE_SIZE order which is greater than or equal to the requested buffer size. This works well for buffers up to a few hundreds kilobytes, but for larger buffers it just a memory waste. With this parameter you can specify the maximum PAGE_SIZE order for contiguous buffers. Larger buffers will be aligned only to this specified order. The order is expressed as a power of two multiplied by the PAGE_SIZE. For example, if your system defaults to 4KiB pages, the order value of 8 means that the buffers will be aligned up to 1MiB only. If unsure, leave the default value "8".

Build project: Kconfig (Linux kconfig) (Path: kernel\dma\Kconfig )

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