Physical pages de-allocation method for virtual addressing machine
US6477634B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/124
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a computer system with a virtual addressing mechanism, a process for the de-allocation of physical pages sets, by means of a first pointer (ptr) on a line (5) of a conversion table (1) that contains an indicator (Ref) that has been set to a first state (“referenced”) by a processor (2), the indicator (Ref) to a second state (“non-referenced”) if the state is (“referenced”) and de-allocates the line (5) if the state is (“non-referenced”). The de-allocation process claimed by the invention sets an indicator (ref) which has been set to the first state (“referenced”) by the processor (2) on a line (13) of the conversion table (1) to a second state (“non-referenced”) if the state is (“referenced”) by means of a second pointer (ptr+&Dgr;) on the line (13) upon the indication of an attribute value (Co) for said line (13). The de-allocation process can therefore be used for a cache mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.