Questions tagged [memory-mapped-file]

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Allow partial memory mapping of /dev/mem

I have a SoC-FPGA(DE0-nano-soc) which contains an ARM-Cortex-A9 cpu with a Cyclone V FPGA on a single chip. the CPU has access to 1gb of DDR3 memory but the FPGA can also access this memory so they ...
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Is memory mapped I/O only used internally by OS, not exposed to and used by programmers on top of Linux?

In Operating System Concepts, memory mapped files and memory mapped I/O are two different things. See below about memory mapped I/O. To use memory mapped files, we have mmap(). To use memory ...
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Are sharing a memory-mapped file and sharing a memory region implemented based on each other?

Are sharing a memory-mapped file and sharing a memory region implemented based on each other? The following two quotes seem to say so, and seem a chicken-egg problem to me. Operating System Concepts ...