Is there any way to reserve a certain physical address space (say 0x2000 – 0x1000) in linux
i need to reserve it so linux doesn’t use it in any way. it is used by some unrelated co-processor and so must be left unused.
Thanks
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Is there any way to reserve a certain physical address space (say 0x2000 – 0x1000) in linux
i need to reserve it so linux doesn’t use it in any way. it is used by some unrelated co-processor and so must be left unused.
Thanks
You will have to write a kernel module for that. See Chapter 15 “Memory Mapping and DMA” of “Linux Device Drivers, Third Edition“
[EDIT] You can use the Linux kernel parameter
memmapfor this:Kudos go to Basile Starynkevitch (see comment above)