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Asked: 2026-06-18T00:14:12+00:00

Is there a function that you can use to provide a mapping an address

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Is there a function that you can use to provide a mapping an address to use?

I am trying to figure out a way to take advantage of large pages even when I have to map small files. I know I can waste memory. Optionally I could use VirtualAlloc to allocate a page sized block which I could then dice up and map multiple files into. I am assuming, since memory mapping is backed by the virtual memory subsystem, that this is not possible – a single page of memory probably has to be backed by a single file.

I thought I would ask before I did anything.

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  1. Editorial Team

    I suspect that it is impossible, but just an idea:

    Address allocation decision belongs to MapViewOfFile, not to CreateFileMapping. And MapViewOfFile certainly calls some native API stuff in NTDLL.DLL. You could figure out which function does it call to actually create a mapping, and who knows — that function might be more flexible and allow something which is impossible with KERNEL32. (e.g. we know that PE file sections are mapped in a manner you can’t imitate with MapViewOfFile).

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