CAJ | 학술논문

针对虚拟机监视器(virtual machine monitor, VMM)与上层客户虚拟机(Guest-VM)之间的语义鸿沟(semantic gap)问题，该文提出了一种自下而上的调用方式，该方法使得VMM能够同步调用客户机的已有功能来获取客户机语义信息，为在客户虚拟机地址空间之外的监控机制带来便利。在Xen半虚拟化环境下，实现了自下而上的同步调用方式，有效地解决了语义重构所需的重复定义和实现问题。实验表明，该方法能使VMM有效地调用客户机的已有功能为自己服务，使VMM能准确地获取上层虚拟机操作系统的信息。
침대허의궤감시기(virtual machine monitor, VMM)여상층객호허의궤(Guest-VM)지간적어의홍구(semantic gap)문제，해문제출료일충자하이상적조용방식，해방법사득VMM능구동보조용객호궤적이유공능래획취객호궤어의신식，위재객호허의궤지지공간지외적감공궤제대래편리。재Xen반허의화배경하，실현료자하이상적동보조용방식，유효지해결료어의중구소수적중복정의화실현문제。실험표명，해방법능사VMM유효지조용객호궤적이유공능위자기복무，사VMM능준학지획취상층허의궤조작계통적신식。
In order to solve the semantic gap problem between virtual machine monitor (VMM) and guest virtual machine (VM), an up-call mechanism is proposed, with which the service request is launched by VMM, and the guest-VM is responsible to provide response to the request from VMM. This makes it possible for VMM to synchronously call guest-VM services to get guest semantic information, bringing convenience for monitor agents constructed out of guest-VM address space to get guest information exactly. The up-call mechanism implemented as a synchronous communication channel is able to make up the problem of duplicate definitions and implementations inside VMM brought by semantic reconstruction. A prototype system on the para-virtualization platform of Xen is implemented. The result shows that the method proposed in this paper is able to help VMM to call guest functions to get guest services and semantic information instantly.