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Optimizing TLB entries for mixed page size storage in contiguous memory

United States Patent

April 23, 2013
View the Complete Patent at the US Patent & Trademark Office
A system and method for accessing memory are provided. The system comprises a lookup buffer for storing one or more page table entries, wherein each of the one or more page table entries comprises at least a virtual page number and a physical page number; a logic circuit for receiving a virtual address from said processor, said logic circuit for matching the virtual address to the virtual page number in one of the page table entries to select the physical page number in the same page table entry, said page table entry having one or more bits set to exclude a memory range from a page.
Chen; Dong (Yorktown Heights, NY), Gara; Alan (Yorktown Heights, NY), Giampapa; Mark E. (Yorktown Heights, NY), Heidelberger; Philip (Yorktown Heights, NY), Kriegel; Jon K. (Rochester, MN), Ohmacht; Martin (Yorktown Heights, NY), Steinmacher-Burow; Burkhard (Boeblingen, DE)
International Business Machines Corporation (Armonk, NY)
12/ 684,642
January 8, 2010
STATEMENT OF GOVERNMENT RIGHTS This invention was made with Government support under Contract No. B554331 awarded by the Department of Energy. The Government has certain rights in the invention.