Device sharing system with PCIe interface and device sharing method with PCIe interface

Abstract

A device sharing system with a PCIe interface runs in a request server and a shared server which provides a PCIe interface device as a to-be-shared device. A shared drive acquires the access of a virtual machine in the request server to the to-be-shared device, and a shared manager returns the model of the to-be-shared device and the memory address of a base register of a PCIe of the to-be-shared device to a shared agent according to the access. The shared drive establishes a first window in a specified storage space of the virtual machine and maps the first window to the memory of the base register of the PCIe of the to-be-shared device. The shared manager establishes a second window in a storage device of the shared server and maps the second window to the specified storage space of the virtual machine. The invention further provides a device sharing method with a PCIe interface. By adopting the device sharing system and the device sharing method of the invention, device sharing with a PCIe interface among a plurality of servers can be realized.

Description

technical field [0001] The invention relates to hardware sharing technology, in particular to a device sharing system and method with fast peripheral component interconnection standard PCIe interface. Background technique [0002] The input and output devices can be shared among multiple devices. However, when one device needs to share the input and output devices of other devices, it is often necessary to modify the corresponding driver program at the local end of the device. For example, taking a network card as an example, when a server wants to use a network card on another server for data transmission, it needs to use a specific driver, which will inevitably lead to the need to modify the local network card driver to realize calls to different types of network cards, and Finally, sharing of devices with PCIe interfaces will be realized, which will inevitably lead to low usage efficiency of network cards. Or, if the server does not modify the local network card driver, ...

AI Technical Summary

Problems solved by technology

For example, taking a network card as an example, when a server wants to use a network card on another server for data transmission, it needs to use a specific driver, which will inevitably lead to the need to modify the local network card driver to realize calls to different types of network cards, and Ultimately realize the sharing of devices with PCIe interface, which will inevitably lead to inefficient use of network cards

Or, if the server does not modify the local network card driver, then only the network card corresponding to the network card driver can be used, and the types of network cards that can be called must be greatly restricted, thus affecting the number of network cards in use. sharing between devices

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