Abstract：Traditional physical memory protection mechanism mainly depends on the specific hardware and operation system，which has disadvantage including low reliability，bad isolation and weak security and so on.VMX architecture of Intel VT realizes controlling operation system users to access the physical memory.On the basis of analysis of EPT implementation principle，designed method of physical memory dynamic isolation and access simulation，then implemented prototype system PMM（Physical Memory Monitor），which used EPT mechanism to hide physical memory accessed by Linux application program process.The experiment results shows that this method can hide physical memory accessed by application program process and prevent illegal program from accessing protected physical memory and produce less performance cost.
2021, Vol. 42 
