Virtual machine memory mapping method and system

A memory mapping and virtual machine technology, applied in the field of virtual machine memory mapping methods and systems, can solve problems such as low efficiency, neglect of security threats, and inability to provide support for special applications, so as to avoid accessing outdated data and improve efficiency.
CN103257929AInactive Publication Date: 2013-08-21SHANGHAI YINGLIAN SOMATOSENSORY INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI YINGLIAN SOMATOSENSORY INTELLIGENT TECH CO LTD
Publication Date
2013-08-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a virtual machine memory mapping method and a system, wherein the method comprises step 1 of selecting a memory mapping method according to an application layer mapping request, and executing step 2 or step 3; step 2 of binding machine pages to be mapped of a virtual machine to be mapped and physical pages of a monitoring virtual machine, directly reading and writing corresponding memory corresponding to the mapped virtual machine, and executing step 4; step 3 of enabling the monitoring virtual machine to decompose a virtual address space into corresponding physical pages combined by a plurality of pages after the monitoring virtual machine processes unused physical memory in the physical memory, obtaining the machine pages to be mapped of the virtual machine to be mapped, carrying out corresponding processing after judgment, then binding the physical pages of the monitoring virtual machine and the machine pages to be mapped of the virtual machine to be mapped, and executing step 4; step 4 of releasing the memory of the monitoring virtual machine corresponding to the mapping memory of the virtual machine to be mapped after mapping, setting a mapping list from the machine pages of the monitoring virtual machine to the physical pages, and setting a corresponding item to be an invalid machine page.
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Description

technical field

[0001] The invention relates to the field of virtual machine memory mapping, in particular to a virtual machine memory mapping method and system. Background technique

[0002] Virtual machine out-of-band memory mapping is a method of mapping the memory of other virtual machines from the outside through a virtual machine as a monitoring virtual machine. As a key technology for building a security system, it is being more and more widely used.

[0003] Current typical applications of this technology include virtual machine security monitoring, criminal forensics, especially local system live forensics, etc. However, at present, this technology has two inherent defects for these two types of applications. On the one hand, the existing out-of-band monitoring technology for virtual machines on virtualization platforms uses privileged virtual machines (such as Domain0 under the Xen platform) as monitoring virtual machines, ignoring privileged virtual machines. At ...

Claims

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