EXITING MULTIPLE THREADS IN A COMPUTER

摘要

According to one aspect, a computer system includes a configuration with a machine enabled to operate in a single thread (ST) mode and a multithreading (MT) mode. In addition, the machine includes physical threads. The machine is configured to perform a method that includes executing a guest entity on the core in MT mode. The guest entity includes all or a portion of a guest VM, and a plurality of logical threads executing on the physical threads. An exit event is detected at the machine. Based on detecting the exit event, the machine waits until all of the logical threads that are currently executing on the physical threads have reached a synchronization point. A state that includes exit reason information is saved for each of the logical threads and the execution of a host is initiated in the ST mode on one of the physical threads.