GitHub - 2stein57/cma_malloc: A Linux kernel module which can be used to allocate memory from the Contiguous Memory Allocator

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A Linux kernel module which can be used to allocate memory from the Contiguous Memory Allocator

GPL-3.0 license

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Name		Name	Last commit message	Last commit date
Latest commit History 28 Commits
module		module
userspace		userspace
.gitignore		.gitignore
LICENSE		LICENSE
README		README
cma_malloc.h		cma_malloc.h

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This is a simple kernel module and a library to allocate continuous memory from the Linux kernel.
Make sure your kernel is compiled with CMA and DMA enabled. To use this module, the CMA memory needs to be in the address space addressable with 32 bits.
On AMD64 systems, this might not be done per default. Use the following kernel parameter to fix this:

cma=256M@0G-4G

256 means 256 MiB can can, offcourse, be changed to something else.