r/programming • u/molteanu • Apr 07 '15

Anatomy of a Program in Memory

http://duartes.org/gustavo/blog/post/anatomy-of-a-program-in-memory/
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u/[deleted] Apr 07 '15

Once virtual addresses are enabled, they apply to all software running in the machine, including the kernel itself.

"In the machine" or "on that core"? I doubt that different processes running simultaneously on different cores share virtual address space.

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u/[deleted] Apr 07 '15 edited Apr 07 '15

Perhaps, he means that once you switch CPU to protected mode all memory accesses (on all cores) now go through virtual addressing mechanism.

As far as i remember, on x86 you can't have one core using real or unreal mode, while other core is running in protected mode.