CPU virtualization method based on privileged instruction library

Abstract

The invention discloses a CPU virtualization method based on a privileged instruction library, which is characterized in that the CPU virtualization method is based on at least one physical processorPCPU, an operating system of a CPU multi-core architecture, at least one virtual processor VCPU, a virtual machine manager, and firmware configured with the privileged instruction library; a virtual processor state management data structure VCPUCB is used for maintaining the privileged state of the VCPU and comprises state information related to internal implementation of the processor, and the virtual processor state management data structure VCPUCB is placed in a memory; and the virtual state base address register VCPUCB_PTR is used for storing a base address pointing to the virtual processor state management data structure VCPUCB. According to the invention, the support of important VCPU entry and VCPU exit in processor virtualization is realized, the development of a VCPU scheduling interface in a virtual machine manager is supported, the switching of a processor privilege state to a virtual machine mode is supported, the method is transparent to the virtual machine manager and anoperating system kernel, and the CPU virtualization support is realized under the condition of not adding any hardware expansion interface.

Description

technical field [0001] The invention belongs to the technical field of central processing units, in particular to a CPU virtualization method based on a privileged instruction library. Background technique [0002] With the large scale expansion of computing system resources, continuous enhancement of processing capabilities, increasingly rich types of resources, and flexible and diverse application requirements, seeking new computing mechanisms and models has become a major challenge for the future information technology field. Computing system virtualization and cloud computing, as a new computing model to promote the development of computer technology, has long been a research hotspot in the industry. [0003] Domestic processors started late, and there is no systematic and complete hardware architecture support for virtualization like Intel VT technology in terms of processor architecture. The present invention uses the existing domestic processor operating system inter...

AI Technical Summary

Problems solved by technology

[0003] Domestic processors started late, and there is no systematic and complete hardware architecture support for virtualization like Intel VT technology in terms of processor architecture.

Images