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I've asked this question on stackoverflow but to no avail.

http://stackoverflow.com/questions/32336694/huge-pages-on-mac-os-x

I'm trying to mmap a huge pages memory region using the documented Mac OS X API for this. But it simply doesn't work. Any ideas on what is wrong with the following code snippet:

  #include <stdio.h>
  #include <sys/mman.h>
  #include <mach/vm_statistics.h>

  int
  main()
  {
      void *p = mmap((void *) 0x000200000000, 8 * 1024 * 1024,
                     PROT_READ | PROT_WRITE,
                     MAP_ANON | MAP_FIXED | MAP_PRIVATE,
                     VM_FLAGS_SUPERPAGE_SIZE_2MB, 0);
      printf("%p\n", p);
      if (p == MAP_FAILED)
          perror(NULL);
      return 0;
  }