CONTROLLED USE OF A MEMORY MONITOR INSTRUCTION AND MEMORY WAIT INSTRUCTION IN A VIRTUALIZED ENVIRONMENT

摘要

Controlled use of a memory monitor instruction and memory wait instruction in a virtualized environment. A hypervisor executing on a computing host determines that a first process executing in a virtual machine (VM) attempted to execute a memory monitor instruction. The hypervisor determines a memory range associated with the memory monitor instruction. A virtual machine control structure that corresponds to the VM is altered to prevent a virtual machine exit upon a subsequent execution of a memory wait instruction by the first process. The hypervisor executes the memory monitor instruction to cause the memory range to be monitored for a store command to the memory range. The hypervisor returns control to the first process to begin execution at an instruction after the memory monitor instruction.