Method and apparatus for managing a dynamic alias page table

Details Method and apparatus for managing a dynamic alias page table Method and apparatus for managing a dynamic alias page table

2005-11-01

2005-11-01

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S202000, C711S203000, C711S206000, C711S208000, C711S209000, C711S216000, C711S221000

Reexamination Certificate

active

06961840

ABSTRACT:
A method and apparatus for managing a dynamic alias page table are provided. With the apparatus and method, alias page table entries are added to an alias page table dynamically by determining if the alias page table has space for the entry and, if so, the entry describing the virtual address to physical address mapping is added to the alias page table and a successful completion is returned to the virtual memory manager. If the alias page table does not have space for the entry, a new page is used to map the next virtual page of the alias page table. This page must be marked as a fixed page if it not so marked already. This page is pinned in the software page frame table, and the hardware page table entry for this page is also pinned.

REFERENCES:
patent: 6578131 (2003-06-01), Larson et al.
Per-Ake Larson, Dynamic Hash Tables, Apr. 1988, Communications of ACM, vol. 31, pp 446-457.
Enbody et al., Dynamic Hashing Schemes, Jun. 1988, ACM Computing Surveys, vol. 20, pp 85-113.
Swanberg, Atomic Memory Migration Apparatus and Method.

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