OS-Firmware RAS Coordination for Memory Reliability
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Solution Overview
Problem
Current server reliability, availability, and serviceability (RAS) management systems lack coordination between operating systems (OS) and platform firmware, leading to inefficient utilization of hardware resources and degraded performance due to uncoordinated memory failure handling.
Innovation Solution
Implementing a system where the OS and platform firmware interact to coordinate RAS efforts through defined data structures and communication protocols, allowing proactive notification and self-repair actions for temporary memory failures, and utilizing RAS features like post-package repair (PPR) to reclaim resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the OS and platform firmware operate independently to handle memory failures, then each system can manage its own RAS efforts, but hardware resources are inefficiently utilized and system performance degrades
Solution Approach 1:
The patent merges the RAS management functions of the OS and platform firmware into a coordinated system. The OS and firmware exchange information through defined data structures and communication protocols, allowing them to work together on memory failure handling rather than independently. This coordination enables efficient resource utilization while maintaining system reliability.
Solution Approach 2:
The patent implements feedback mechanisms where the OS and platform firmware continuously exchange status information about memory health and failure events. This feedback loop allows the system to dynamically adjust resource allocation and trigger appropriate repair actions based on real-time conditions, optimizing both reliability and productivity.
2Productivity
If the OS and platform firmware coordinate RAS efforts through communication protocols, then hardware resource utilization improves, but system complexity increases
Solution Approach 1:
The patent creates universal data structures and communication protocols that can handle multiple types of RAS events and coordination scenarios. Rather than implementing separate mechanisms for each failure type, the system uses a unified approach that reduces overall complexity while improving resource utilization across different memory failure conditions.
Solution Approach 2:
The patent introduces standardized data structures and communication protocols as intermediaries between the OS and platform firmware. These intermediaries simplify the coordination process by providing a common language and format for exchanging RAS information, reducing the complexity that would otherwise arise from direct, ad-hoc communication between the two systems.
3Productivity
If memory resources are reclaimed after repair, then system efficiency improves, but the risk of premature reclamation increases without proper coordination
Solution Approach 1:
The patent implements preliminary verification actions before memory resources are reclaimed. The coordinated system checks repair status and validates memory functionality through communication between the OS and firmware before declaring a resource available for reuse. This preliminary action prevents premature reclamation while enabling efficient resource recovery.
Solution Approach 2:
The patent uses feedback mechanisms to continuously monitor memory repair status and coordinate reclamation decisions. The OS and firmware exchange status information to confirm successful repair before resources are reclaimed, ensuring reliability while maintaining productivity through efficient resource utilization.
Data Source
AI summary
An embodiment of an electronic apparatus may comprise one or more substrates, and a controller coupled to the one or more substrates, the controller including circuitry to provide management of a connected hardware subsystem with respect to one or more of reliability, availability and serviceability, and coordinate the management of the connected hardware subsystem with respect to one or more of reliability, availability and serviceability between the connected hardware subsystem and a host. Other embodiments are disclosed and claimed.