Abstract: A method, apparatus, and computer instructions for managing a set of devices in the data processing system. An alert is received through an external alert mechanism. The alert is at least one of a power alert and a thermal alert. In response to the alert, operation of a selected device within the set of devices is altered such that at least one of power usage and generation of heat by the selected device is reduced or restored to normal operation. The mapping of the reduced physical resources to logical resources is performed with no operating system intervention.

Abstract: To emulate an interrupt architecture in a data processing system, interrupt emulation code receives from an operating system a first call requesting access to a first resource in a first interrupt architecture. In response to receipt by the interrupt emulation code of the first call, the interrupt emulation code maps the first resource to a second resource in interrupt hardware of the data processing system. The mapping operation includes determining an identifier of the second resource in a different second interrupt architecture. The interrupt emulation code then initiates access to the second resource implemented by the interrupt hardware.

Abstract: A method, apparatus, and computer instructions for halting input/output error propagation in the logically partitioned data processing system. All components associated with the bridge are identified to form a set of failed components in response to detecting an error state in a bridge within a set of bridges in the logical partitioned data processing system. An identification of the failed components is stored in which the identification is used by each partition during a boot process.

Abstract: A system, method, and computer program product are disclosed for preventing machine crashes due to hard errors in one of multiple, different processors that are included in a logically partitioned data processing system. An error occurring in one of the processors is detected. A determination is then made regarding whether the processor has been deconfigured. The partition is then rebooted only in response to a determination that the processor has been deconfigured and will not be included in the partition processor resources. Thus, only the configured processors are rebooted. The deconfigured processor is not rebooted.

Abstract: A system and method of implementing a virtual data modification breakpoint register (V-DMBR) are provided. First, a compiler is modified to insert instructions to have a value of a monitored data copied into another memory address. The compiler is further modified to insert into the program commands to compare the two values upon each function call entry and exit and to go to a software handler if a difference ensues. Then, when a piece of data is to be monitored for corruptions or modifications while a program is executing, the address of the data is entered into the program and the program is re-compiled. Alternatively, a debugger may be used to activate the invention. In that case, the data to be monitored is passed to an executing program using the debugger. But as before, the executing program must have been compiled using the modified compiler.

Abstract: A method, apparatus, and computer instructions for halting input/output error propagation in the logically partitioned data processing system. All components associated with the bridge are identified to form a set of failed components in response to detecting an error state in a bridge within a set of bridges in the logical partitioned data processing system. An identification of the failed components is stored in which the identification is used by each partition during a boot process.

Abstract: A system, method, and computer program product are disclosed for preventing machine crashes due to hard errors in one of multiple, different processors that are included in a logically partitioned data processing system. An error occurring in one of the processors is detected. A determination is then made regarding whether the processor has been deconfigured. The partition is then rebooted only in response to a determination that the processor has been deconfigured and will not be included in the partition processor resources. Thus, only the configured processors are rebooted. The deconfigured processor is not rebooted.