Adaptive Virtual Function Drivers for Hardware Compatibility

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Solution Overview

Problem

The challenge in managing hardware-supported virtual functions, such as SR-IOV, is that virtual function drivers are typically specific to a particular hardware implementation, requiring updates whenever hardware changes occur, leading to inefficient and costly upgrade processes for cloud service providers.

Innovation Solution

The implementation of adaptive virtual function drivers that maintain forward compatibility by supporting a standard feature set and negotiating advanced features, allowing them to operate on various hardware versions without needing updates unless new features are utilized.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If virtual function drivers are specific to a particular hardware implementation, then hardware compatibility is improved, but driver maintenance complexity increases when hardware changes occur

Engineering Contradiction:

Improvehardware compatibilityVSAvoiddriver maintenance complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal virtual function driver that can operate across multiple hardware generations by defining a standard feature set that all hardware must support. This single driver design serves multiple hardware versions without requiring separate drivers for each generation, thereby reducing driver maintenance complexity while maintaining hardware compatibility through the standardized interface.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent utilizes hardware capability negotiation mechanisms that allow the driver to dynamically adjust its operation based on the specific hardware features available. By changing operational parameters based on detected hardware capabilities rather than requiring different drivers, the system maintains compatibility across hardware generations while simplifying driver management.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If separate drivers are created for each hardware generation, then hardware-specific optimization is improved, but upgrade overhead increases

Engineering Contradiction:

Improvehardware-specific optimizationVSAvoidupgrade overhead

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent creates a single universal driver that can operate with multiple hardware generations by implementing a standardized feature set. This eliminates the need to create, test, and deploy separate drivers for each hardware version, significantly reducing upgrade overhead and time loss while maintaining hardware-specific optimization through capability negotiation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent establishes a predefined standard feature set that all hardware must support before compatibility is guaranteed. This preliminary definition of required features allows the driver to be written once with knowledge of minimum requirements, enabling forward compatibility without requiring updates when new hardware is released, thus reducing upgrade overhead.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If a standard feature set is enforced for forward compatibility, then driver portability is improved, but access to advanced hardware features is limited

Engineering Contradiction:

Improvedriver portabilityVSAvoidaccess to advanced features

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent implements a dual-mode driver architecture where a standard feature set ensures broad portability across hardware generations, while simultaneously allowing negotiation and activation of advanced features when available. This approach maintains driver portability through the standard interface while preserving access to productivity-enhancing advanced features through optional negotiation mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent makes the driver's feature set dynamic rather than static. The driver can adapt its operational capabilities based on the specific hardware it encounters, enabling it to use only the standard feature set when portability is prioritized or to negotiate and utilize advanced features when available, thus balancing portability with access to advanced functionality.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11989573B2Adaptive virtual function drivers for electronic devices

Publication Date: 2024.05.21 INTEL CORP

AI summary

Techniques for providing adaptive virtual function (VF) drivers capable of operating with physical devices having a plurality of different hardware configurations are described. In one embodiment, for example, an apparatus may include logic to implement a virtual machine (VM), the logic to initialize an adaptive virtual function (VF) driver to facilitate communication between the VM and a physical device to be virtualized, establish communication between the adaptive VF driver and a physical function (PF) driver of the hypervisor for the physical device, activate a standard feature set for the adaptive VF driver to execute on a PF of the physical device, and negotiate activation of an advanced feature set for the adaptive VF driver to execute on the PF, the adaptive VF driver to provide the advanced feature set to the PF, the PF activate each feature of the advanced feature set supported by the PF.