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Virtual memory

Most of the literature on virtual memory indicates that an application developer who understands virtual memory can help me use its powerful features. I once worked on Linux application development, but I didn't like the intricacies of virtual memory when I was coding. Am I missing something? If so, please follow up on how I can use virtual memory. Else let me know if I don't make sense with the question!

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Well, actually the concept is pretty simple. I will not repeat it here, but you should pick up any book on OS design, and that will be explained there. I recommend "Operating System Concepts" from Silberscahtz and Galvin - this is what I had to use at the university, and that's good.

A few things I can imagine about what Virtual Memory knowledge can give you:

  • Learning to allocate memory at page boundaries to avoid waste (applies only to virtual memory, not to regular heap / stack memory);
  • Block several pages in RAM so that they are not replaced on the HDD;
  • Guardian Pages
  • Saving a certain range of addresses and the subsequent transfer of actual memory;
  • Maybe using the NX (non-executable) bit to increase security, but I'm not sure about that.
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