OS Support : Handling Virtual Memory Primary regions  Abstraction presented to application  Contiguous Virtual address space backed by Direct Segment What goes in the primary region  Dynamically allocated R/W memory  Application can indicate what it needs to put in primary region The size of the primary region is set to a very high value to accommodate the whole of the physical memory if need be  64-bit VA support 128TB of VM, so pretty much never running out of VA space Architecture Reading Club Summer 1311
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