Apparatus and method for implementing hot removal of expansion device, and server

By controlling the interrupt signal of the expansion slot through the connection between BIOS and GPIO, and using the SCI interrupt method, the hot removal of PCIe devices under the operating system is realized, which solves the memory resource reservation problem in the existing technology and improves the management efficiency and stability of the server.

WO2026113356A1PCT designated stage Publication Date: 2026-06-04INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
INSPUR SUZHOU INTELLIGENT TECH CO LTD
Filing Date
2025-06-20
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Existing hot removal functionality requires pre-reserved memory resources and cannot achieve hot removal of extended devices within the operating system, resulting in low energy efficiency in extended device management.

Method used

By using the SCI interrupt method and leveraging the connection between the Basic Input/Output System (BIOS) and the General Purpose Input/Output (GPIO) chip, the interrupt signal of the expansion slot can be controlled to achieve hot removal of PCIe devices.

Benefits of technology

The system enables hot removal of expansion devices such as PCIe network cards, PCIe RAID cards, and PCIe GPU cards within the operating system, improving server management efficiency and stability.

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Abstract

The present application provides an apparatus and method for implementing hot removal of an expansion device, and a server. The method comprises: in response to server startup, a basic input / output system detecting a setting value of an interrupt control option corresponding to each expansion slot; in response to detecting that the setting value of an interrupt control option is enabled, setting a state value of a target pin of a general-purpose input / output chip matching a target expansion slot to a first preset value to trigger a system interrupt; in response to detecting that a server has entered an operating system, the operating system parsing a target interrupt status register in a power management configuration protocol and corresponding to the target expansion slot; and when the target interrupt status register is at the first preset value, triggering the execution of a hot removal operation on a connected target expansion device.
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Citation Information

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