VIRTUALIZATION SYSTEM, MEMORY MANAGEMENT METHOD AND CONTROL PROGRAM

PROBLEM TO BE SOLVED: To improve use efficiency of a memory in starting a plurality of domains for executing the same OS. SOLUTION: When an OS 310 accesses a page 313 which has not been loaded to the OS (S601), page invalidation exception is generated, and a hypervisor assigns a physical memory regi...

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Bibliographic Details
Main Authors ALAIN VOLMAT, SHIODA NORIYUKI, SHIDA HARUO
Format Patent
LanguageEnglish
Published 03.04.2008
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To improve use efficiency of a memory in starting a plurality of domains for executing the same OS. SOLUTION: When an OS 310 accesses a page 313 which has not been loaded to the OS (S601), page invalidation exception is generated, and a hypervisor assigns a physical memory region for one page according to the exception, and loads the program to the memory region (S602). When the data of the OS are read from a secondary storage device on a physical memory 410, the hypervisor rewrites a page table (S603). Afterwards, when the same page is accessed by the other OS 320, any data are not loaded on the physical memory 410, and the page table is updated so that the already loaded page frame can be associated with the page of the other OS. COPYRIGHT: (C)2008,JPO&INPIT
Bibliography:Application Number: JP20060252287