Patent · US Active

Kernel memory locking for systems that allow over-commitment memory

US8972647B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Keerthi B. Kumar · Kanchinakote, IN
Shailaja Mallya · Bengaluru, IN

Key dates

Filing date	Nov 18, 2011
Grant date	Mar 3, 2015
Priority date	—
Expiry date	Aug 14, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/5077
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Provided are techniques for allocating logical memory corresponding to a logical partition in a computing system; generating a S/W PFT data structure corresponding to a first page of the logical memory, wherein the S/W PFT data structure comprises a field indicating that the corresponding first page of logical memory is a klock page; transmitting a request for a page of physical memory and the corresponding S/W PFT data structure to a hypervisor; allocating physical memory corresponding to the request; and, in response to a pageout request, paging out available logical memory corresponding to the logical partition that does not indicate that the corresponding page is a klock page prior to paging out the first page.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.