Appendix

Inter-Virtual Machine Communication

Inter-virtual machine Communication (IVC) facilitates information exchange between two virtual machines over shared memory. The underlying shared memory format consists of a circular FIFO buffer, one for each direction. To avoid the need for polling, a virtual interrupt implements signaling on special state transitions.

System Trace

System Trace is a feature that will record events for display on a timeline view with the System Profiler (SP) application. For HV events, the size of the buffer, as well as the type of events that are recorded, are configurable through the PCT.