Platform Independent Interrupt Manager for Dynamic MSI Binding
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Solution Overview
Problem
Managing Message Signaled Interrupts (MSI) in complex computer systems is challenging due to the need for flexible and portable interrupt management across varying hardware platforms and configurations, especially in logically partitioned systems, where dynamic reconfiguration and high availability are critical, and existing solutions often require complex firmware and operating system adaptations.
Innovation Solution
A platform-independent interrupt manager is developed, interfaced with the hardware platform through platform-specific encapsulation, allowing for dynamic binding management of MSI resources and supporting multiple hardware platforms, enabling flexible allocation and sharing of MSI resources among clients without requiring specific knowledge of hardware implementations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a platform-specific interrupt management approach is used, then the interrupt management is optimized for specific hardware, but the complexity increases when supporting multiple hardware platforms
Solution Approach 1:
The patent implements a universal interrupt management interface that can handle multiple types of interrupts (MSI, MSI-X, legacy) through a single standardized API. The interrupt manager abstracts hardware-specific details while maintaining the ability to manage different interrupt types and hardware platforms uniformly, eliminating the need for separate management code for each platform.
Solution Approach 2:
The patent introduces an interrupt manager as an intermediary layer between the hardware platform and the operating system/firmware. This manager translates hardware-specific interrupt mechanisms into a standardized interface, mediating between the diverse hardware implementations and the unified software layer, thereby reducing complexity in both firmware and operating system adaptations.
2Adaptability or versatility
If dynamic reconfiguration of MSI resources is implemented, then system flexibility and availability are improved, but the complexity of managing bindings increases
Solution Approach 1:
The patent implements dynamic binding management where the interrupt manager can allocate, deallocate, and reassign MSI resources at runtime based on system conditions and client needs. The binding between MSI resources and interrupt handlers is not fixed but can be modified dynamically, enabling flexible reconfiguration while the manager handles the complexity of tracking and managing these dynamic bindings.
Solution Approach 2:
The interrupt manager incorporates feedback mechanisms to track the state of MSI resources and bindings. It monitors resource availability, client requirements, and system conditions to make intelligent decisions about binding allocation and reconfiguration, reducing the complexity of manual binding management while enabling dynamic adaptability.
3Productivity
If MSI resources are shared among multiple clients, then resource utilization efficiency is improved, but the difficulty of managing and allocating resources increases
Solution Approach 1:
The patent merges the management of multiple MSI resources and their bindings into a single interrupt manager that handles all clients uniformly. Instead of each client managing their own resources independently, the manager consolidates resource allocation, tracking, and coordination, improving utilization efficiency while centralizing the complexity of managing shared resources.
Data Source
AI summary
An apparatus, program product and method dynamically bind Message Signaled Interrupt (MSI) resources shared by a plurality of clients to an interrupt facility in an MSI-capable computer. In addition, management of such bindings may be implemented using a platform independent interrupt manager capable of managing multiple MSI bindings between MSI resources to an interrupt facility, and interfaced with an underlying hardware platform of a computer through platform-specific encapsulation program code.