PAGE TABLE WALKER WHICH POSITIONS A SLIDING FIELD IN A VIRTUAL ADDRESS USING PAGE SIZE

摘要

A page table walker (305) uses at least one of a default page size and a page size selected for a virtual address space to position a sliding field in a virtual address. A page size storage area (315) is used to store a number of page sizes each selected for translating a different set of virtual addresses. The page table walker (305) includes a selection unit (320) coupled to the page size storage area (315), as well as a page entry address generator (325) coupled to the selection unit (320). For each of the virtual addresses received, the selection unit (320) positions a field in that virtual address based on the page size selected for translating the set of virtual addresses to which that virtual address belongs. In response to receiving the bits in the field identified for each of the virtual addresses, the page entry address generator (325) identifies an entry in a page based on those bits.