Abstract: Input/output (I/O) interrupts are avoided at the completion of I/O operations. A task requests (implicitly or explicitly) an I/O operation, and processing of the task is suspended awaiting completion of the I/O operation. At the completion of the I/O operation, instead of an I/O interrupt, an indicator associated with the task is set. Then, when the task once again becomes the current task to be executed, the indicator is checked. If the indicator indicates the I/O operation is complete, execution of the task is resumed.

Abstract: Input/output (I/O) interrupts are avoided at the completion of I/O operations. A task requests (implicitly or explicitly) an I/O operation, and processing of the task is suspended awaiting completion of the I/O operation. At the completion of the I/O operation, instead of an I/O interrupt, an indicator associated with the task is set. Then, when the task once again becomes the current task to be executed, the indicator is checked. If the indicator indicates the I/O operation is complete, execution of the task is resumed.

Abstract: The invention disclosed and claimed herein provides a method for a virtual machine, which maps to the V=R region of a host machine's address space, to resume program execution successfully when the host operating system terminates and subsequently restarts successfully after the occurrence of a system incident. The system incident brings the computer system down, but with a reasonable chance that the system will be able to bounce. A bounce occurs when the host operating system nucleus is reinitialized or refreshed. The virtual machine will be allowed to survive the system incident as long as its integrity can be maintained, i.e. as long as its status and in-progress work can be preserved.