Question: Where Shared Memory Is Allocated on Linux?
Contents Where Is Shared Memory Stored? When a Shared Memory Region Is Setup, the Same Physical Memory Location Is Addressed by the Multiple Processes. However...
Where is shared memory stored?
When a shared memory region is setup, the same physical memory location is addressed by the multiple processes. However the virtual addresses can be different though. Each process uses the virtual address it received only in its own context. Both the virtual addresses refer to the same physical memory.
How is shared memory allocated?
When the process is started, it is allocated a memory segment to hold the runtime stack, a memory segment to hold the programs code (the code segment), and a memory area for data (the data segment). Each such segment might be composed of many memory pages.
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