[NTOS]: A PFN entry is not necessarily physical only if it is higher than MmHighestPh...

[NTOS]: A PFN entry is not necessarily physical only if it is higher than MmHighestPhysicalPage. It can also be physical if it lies in a memory hole within the min-max physical page range. We can detect this by using our PFN Bitmap. So replace all "Is this an I/O mapping?" checks with a check on whether or not the PFN Database entry is NULL (which will check for us both of these statements). This ought to be a macro...

svn path=/trunk/; revision=47623