Abstract: Systems, methods, and computer program products to perform an operation comprising monitoring a privileged storage of a computing system, wherein at least a portion of the privileged storage stores a microcode of the computing system, determining, based on the monitoring, that a first location of the privileged storage includes an instruction, determining that the first location is designated as an unused location of the privileged storage, and performing a predefined operation to remove the instruction from the first location of the privileged storage.

Abstract: Systems, methods, and computer program products to perform an operation comprising monitoring a privileged storage of a computing system, wherein at least a portion of the privileged storage stores a microcode of the computing system, determining, based on the monitoring, that a first location of the privileged storage includes an instruction, determining that the first location is designated as an unused location of the privileged storage, and performing a predefined operation to remove the instruction from the first location of the privileged storage.

Abstract: Vital data components of a computer system are protected by a mechanism for detecting unauthorized alteration, preferably in the form of digital signatures to detect unauthorized alteration. A vital data validation mechanism is provided to verify that vital data modules have not been tampered with. The vital data validation mechanism verifies the current state of each vital data module, preferably by decrypting the digital signature. The validation mechanism also checks an alteration log to verify that no alterations have been made to the corresponding memory locations. The second verification is intended to detect whether a vital data module has been altered temporarily, and then restored to its initial state.

Abstract: Vital data components of a computer system are protected by a mechanism for detecting unauthorized alteration, preferably in the form of digital signatures to detect unauthorized alteration. A vital data validation mechanism is provided to verify that vital data modules have not been tampered with. The vital data validation mechanism verifies the current state of each vital data module, preferably by decrypting the digital signature. The validation mechanism also checks an alteration log to verify that no alterations have been made to the corresponding memory locations. The second verification is intended to detect whether a vital data module has been altered temporarily, and then restored to its initial state.

Abstract: Method, apparatus and article of manufacture for error notification in a dynamically partitioned environment in which logical partitions are added and/or removed during operation of a system. Logical partitions are notified of errors based on a predefined criterion(s). In one aspect, a criterion is applied to the maintenance of an error notifications list. In another aspect, a notification and/or acknowledgment criterion is applied in the determination of whether to notify a logical partition of an error notification that has not been discarded.

Abstract: Method, apparatus and article of manufacture for error notification in a dynamically partitioned environment in which logical partitions are added and/or removed during operation of a system. Logical partitions are notified of errors based on a predefined criterion(s). In one aspect, a criterion is applied to the maintenance of an error notifications list. In another aspect, a notification and/or acknowledgment criterion is applied in the determination of whether to notify a logical partition of an error notification that has not been discarded.