Translation lookaside buffer and related method and program product utilized for virtual addresses
US8166239B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2008 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | May 4, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1036
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A program product, a translation lookaside buffer and a related method for operating the TLB is provided. The method comprises the steps of: a) when adding an entry for a virtual address to said TLB testing whether the attribute data of said virtual address is already stored in said CAM and if the attribute data is not stored already in said CAM, generating tag data for said virtual address such that said tag data is different from the tag data generated for the other virtual addresses currently stored in said RAM and associated to the new entry in said CAM for the attribute data, adding the generated tag data to said RAM and to the associated entry in said CAM, and setting a validity flag in said CAM for said associated entry; else if the attribute data is stored already in said CAM, adding the stored attribute data to the entry in said RAM for said virtual address; and when performing a TLB lookup operation: reading the validity flag and the tag data from the entry in said CAM, which is associated to the entry in said RAM for said virtual address, and simultaneously reading the absolute address and the tag data from the entry in said RAM for said virtual address, and generating a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.