Title:
COMPUTER AND CONTROL METHOD FOR LOGICAL PROCESSORS
Document Type and Number:
WIPO Patent Application WO/2016/088220
Kind Code:
A1
Abstract:
A computer provided with physical CPUs and a physical memory that stores a program for implementing a virtualization unit, wherein said virtualization unit: divides the physical CPUs into a plurality of logical CPUs and allocates a first logical CPU and a second logical CPU to a first LPAR on which a first OS operates; retains management information for managing associations between the identifiers of the logical CPUs and the addresses of monitored regions in an address space managed by the OS; registers, in the management information, information associating the identifier of the first logical CPU with the address of a monitored region for the first logical CPU, in the address space managed by the first OS, if the virtualization unit detects a MONITOR command for the first logical CPU issued from the first OS; and causes the first logical CPU to transition into a dormant state if the virtualization unit detects an MWAIT command for the first logical CPU issued from the first OS, or causes the first logical CPU to transition into a running state if the virtualization unit detects a WRITE command and this WRITE command is determined, by reference to the management information, to be a WRITE command for the monitored region for the first logical CPU.
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Inventors:
MATSUMOTO SHUUHEI (JP)
KAWASHIMA JIN (JP)
OIWA EIICHIRO (JP)
KAWASHIMA JIN (JP)
OIWA EIICHIRO (JP)
Application Number:
PCT/JP2014/081967
Publication Date:
June 09, 2016
Filing Date:
December 03, 2014
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G06F9/50; G06F9/46
Foreign References:
| JP2008165834A | 2008-07-17 | |||
| JP2014219977A | 2014-11-20 | |||
| JP2007525776A | 2007-09-06 |
Attorney, Agent or Firm:
TOU-OU PATENT FIRM (JP)
Patent business corporation 藤央特許事務所 (JP)
Patent business corporation 藤央特許事務所 (JP)
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