9.2. EPT misconfiguration 9.2.1. VM-exit 记录信息 10. accessed 与 dirty 标志位 11. EPT 内存类型 12. EPTP switching 13. 实现 EPT 机制 1. 基本原理 VMX架构引入了EPT(Extended Page Table, 扩展页表)机制来实现VM物理地址空间的隔离, EPT机制实现原理与x86/x64的分页机制是一致的. ...
处理器将这个 GPA 转换为 HPA 得到最终的物理地址,从而完成 guest 内存的访问 在这一系列的 GPA 转换过程中,任何一个环节都可能会产生 EPT violation 或者 EPT misconfiguration 而导致 VM-exit 发生;也可能由于 guest paging structure 而引发 guest 产生 #PF 异常,从而使得 guest 处理 #PF 异常处理例程或...
ESX unrecoverable error: (vcpu-x) vcpu-x: EPT misconfiguration: PA fb100000 In the /vmfs/volumes/datastore/vm_name/vmware.log, you see the entries similar to: 2018-06-29T05:19:54.254Z| vcpu-1| W115: MONITOR PANIC: vcpu-4:EPT misconfiguration: PA 3f552b410 2018-06-29T05:19:54.255Z...
The processor attempted to determine an access’s sub-page write permission and encountered an SPP miss or an SPP misconfiguration. varVMX_REASON_UMWAIT: Int The guest attempted to execute a UMWAIT instruction and both the “enable user wait and pause” and “RDTSC exiting” VM-execution contr...
The processor attempted to determine an access’s sub-page write permission and encountered an SPP miss or an SPP misconfiguration. var VMX_REASON_UMWAIT: Int The guest attempted to execute a UMWAIT instruction and both the “enable user wait and pause” and “RDTSC exiting” VM-execution con...
EPT Misconfiguration Adding EPT to VMCS Monitoring Page’s RWX Activity Pre-allocating Buffers for VMX Root Mode Setting hook before Vmlaunch Setting hook after Vmlaunch Finding a Page’s entry in EPT Tables Finding PML4, PML3, PML2 entries ...
根据我的经验,我大多数时候遇到EPT Misconfiguration是因为我清除了条目的bit 0(表示不允许数据读取),并且设置了bit 1(报告允许数据写入)。 此外,当 EPT 分页结构条目配置了为未来功能保留的设置时,也会发生 EPT 错误配置。 这是致命的错误,让我们打破看看我们做错了什么!1...