Marcel Moolenaar dd01d03463 o Add defines for Pre-Boot Virtual Memory (PBVM)
o   Move the backing store in the top half of region 0 now that
    region 4 is re-assigned to be part of the kernel.
o   De-emphasize VM_MAX_ADDRESS. It's really not used anywhere and probably
    means something different than the limit for process address space (we
    have VM_MAXUSER_ADDRESS for that).
o   Exclude the gateway page from VM_MAXUSER_ADDRESS (i.e. make it the same
    as VM_MAX_ADDRESS).
2011-03-11 22:00:45 +00:00
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