Title:
コンピュータ・システムにおける入れ子式仮想化の性能改善
Document Type and Number:
Japanese Patent JP5607474
Kind Code:
B2
Abstract:
A virtualization architecture for improving the performance of nested virtualization in a computer system. A virtualization instruction reads or writes data in a control structure used by a virtual machine monitor (VMM) to maintain state on a virtual machine (VM) to support transitions between a root mode of operation of a CPU in which the VMM executes and a non-root mode of operation of the CPU in which the VM executes. A privileged data access is made to a primary control structure according to the virtualization instruction if the CPU is in the root mode. A non-privileged data access is made to a secondary control structure according to the virtualization instruction if the CPU is in the non-root mode and a secondary control structure field in the primary control structure is enabled.
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Inventors:
Anthony Nicholas Liguori
Lyon Andrew Harper
The Michael David day second
Lyon Andrew Harper
The Michael David day second
Application Number:
JP2010208622A
Publication Date:
October 15, 2014
Filing Date:
September 16, 2010
Export Citation:
Assignee:
International Business Machines corporation INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classes:
G06F9/46
Attorney, Agent or Firm:
Tsuyoshi Ueno
Tasa Kind 1
About a city Yoshihiro
Tasa Kind 1
About a city Yoshihiro