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About Memory Management
In the Microsoft® Win32® application programming interface (API), each process has its own 32-bit
virtual address space that enables addressing up to 4 gigabytes (GB) of memory. The
2 GB in low memory (0x00 to 0x7FFFFFFF) are available to the user, and the 2
GB in high memory (0x80000000 to 0xFFFFFFFF) are reserved for the kernel. The
virtual addresses used by a process do not represent the actual physical location
of an object in memory. Instead, for each process the kernel maintains a page map, an internal data structure used to translate virtual addresses into
corresponding physical addresses.
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