Abstract: Methods and arrangements for accessing a storage structure. Included are an arrangement for providing a storage access instruction, an arrangement for inputting an address into a storage structure data cache responsive to a storage access instruction, an arrangement for extending a storage access instruction with a predicted register number field, the predicted register number field containing a predicted register number corresponding to a speculative location of a load/store operand associated with a storage access instruction, an arrangement for speculatively accessing a storage structure with a storage access instruction extended by the extending arrangement, and an arrangement for reverting to the arrangement for inputting an address if the load/store operand is not in the speculative location.

Abstract: Methods and arrangements for accessing a storage structure. Included are an arrangement for providing a storage access instruction, an arrangement for inputting an address into a storage structure data cache responsive to a storage access instruction, an arrangement for extending a storage access instruction with a predicted register number field, the predicted register number field containing a predicted register number corresponding to a speculative location of a load/store operand associated with a storage access instruction, an arrangement for speculatively accessing a storage structure with a storage access instruction extended by the extending arrangement, and an arrangement for reverting to the arrangement for inputting an address if the load/store operand is not in the speculative location.

Abstract: A system, method and computer program product for enhancing a real-time operating system (RTOS) with functionality normally associated with a general purpose operating system (GPOS). A hypervisor that is adapted to perform a real-time scheduling function supports concurrent execution of an RTOS and a GPOS on a system of shared hardware resources. The RTOS or its applications can utilize services provided by the GPOS. Such services may include one or more of file system organization, network communication, network management, database management, security, user-interface support and others. To enhance operational robustness and security, the hypervisor can be placed in read-only storage while maintaining the ability to update scheduling mechanisms. A programmable policy manager that is maintained in read-write storage can be used to dictate scheduling policy changes to the hypervisor as required to accommodate current needs.

Abstract: Methods and arrangements for accessing a storage structure. Included are an arrangement for providing a storage access instruction, an arrangement for inputting an address into a storage structure data cache responsive to a storage access instruction, an arrangement for extending a storage access instruction with a predicted register number field, the predicted register number field containing a predicted register number corresponding to a speculative location of a load/store operand associated with a storage access instruction, an arrangement for speculatively accessing a storage structure with a storage access instruction extended by the extending arrangement, and an arrangement for reverting to the arrangement for inputting an address if the load/store operand is not in the speculative location.

Abstract: Systems, especially operating systems, are becoming more complex to the point where maintaining them by humans is becoming nearly impossible. Many corporations have recognized this trend and have begun investing in autonomic technology. Autonomic technology allows a piece of software to monitor, diagnose, and repair itself. This can be used for improved performance, reliability, maintainability, security, etc. Disclosed herein is a mechanism to allow operating systems to hot swap a piece of operating system code, while continuing to offer to the user the service which that code is providing. This can be used, for examples, to increase the performance of an application or to fix a detected security hole live without bringing the machine down. Some autonomic ability will be mandatory in next generation operating system for without it they will collapse under their own complexity. The invention offers a key component of being able to achieve autonomic computing.