WO2021185135A1

WO2021185135A1 - Message signaled interrupt implementation method, apparatus and device

Info

Publication number: WO2021185135A1
Application number: PCT/CN2021/079986
Authority: WO
Inventors: 查斌; 刘奖
Original assignee: 阿里巴巴集团控股有限公司
Priority date: 2020-03-17
Filing date: 2021-03-10
Publication date: 2021-09-23
Also published as: CN113407298A

Abstract

A message signaled interrupt (msi) implementation method, apparatus and device. The method comprises: a virtual machine monitor allocates, during initialization, interrupt resources according to the number of queues of a memory-mapped bus device and initializes the interrupt resources (S101), there being a plurality of queues; obtain information about an msi message configured by a client kernel for the memory-mapped bus device (S102); and provide the information about the configured msi message to a virtual machine manager (S103). By using the above-mentioned method, the problems in existing virtual input and output devices of low interrupt performance and inability to support multiple queues for virtual machine access are solved.

Description

Method, device and equipment for realizing message signal interruption

This application claims the priority of the Chinese patent application filed on March 17, 2020 with the application number 202010188210.3 and the invention title "Method, Apparatus and Equipment for Realizing Message Signal Interruption", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of computer technology, in particular to methods, devices, electronic equipment, and storage devices for realizing message signal interruption; this application also relates to a serverless processing method for event processing, a serverless processing method using elastic expansion, and A serverless processing method for IoT data.

Background technique

In the development of cloud computing technology, especially cloud native technology, secure containers have gradually become the focus of everyone’s attention. Secure containers are usually implemented using secure sandboxes. These secure sandboxes meet the cloud-native container standards on the one hand, and on the other hand It provides users with a safe operating environment. At the same time, it is widely used in serverless scenarios due to its low resource occupation and fast startup speed.

Some security sandboxes support memory-mapped bus devices (that is, memory-mapped bus devices that follow the virtual transfer protocol, for example, mmio devices that follow the virtio protocol). Memory-mapped bus devices have the advantages of simple implementation and high data security, but When using memory-mapped bus devices, in many cases, due to the limitation of the virtual transport protocol, only traditional single interrupts are supported, and multiple interrupts are not supported, so the interrupt performance is low; in addition, due to the lack of multiple interrupt support, virtual machine access cannot be supported Of multi-queue devices.

Summary of the invention

The present application provides a method for realizing message signal interruption to solve the multi-queue problem of low interruption performance of existing virtual input and output devices and the inability to support virtual machine access.

This application provides a method for realizing message signal interruption, including:

During initialization, the virtual machine monitor allocates interrupt resources according to the number of queues of the memory-mapped bus device and initializes the interrupt resources; the number of queues is multiple;

Obtaining information about the message signal interrupt (msi) message configured by the client kernel for the memory mapped bus device;

The information of the configured message signal interruption message is provided to the hypervisor.

Optionally, the obtaining information about the message signal interrupt message configured by the client kernel for the memory mapped bus device includes:

Obtain the address information of the information of the message signal interruption message from a predefined address register; wherein the address register is used to store the address of the information of the message signal interruption message;

According to the obtained address information of the information of the message signal interrupt message, the information of the signal interrupt message configured by the client kernel for the memory mapped bus device is obtained.

Optionally, the provision of the configured message signal interruption message information to the virtual machine management program includes:

Saving the obtained information of the message signal interrupt message configured by the client kernel for the memory mapped bus device in a local cache;

Obtain the message signal interrupt enable identification information;

It is determined whether to enable the message signal interruption according to the message signal interruption enable identification information, and when the result of the determination is yes, the information of the message signal interruption message stored in the local cache is provided to the hypervisor.

Optionally, it also includes:

When the result of the judgment is no, return to the step of obtaining information about the message signal interrupt message configured by the client kernel for the memory mapped bus device.

This application also provides a method for realizing message signal interruption, including:

When the client kernel initializes the memory-mapped bus device, it allocates a corresponding message signal interrupt message and interrupt number to each queue according to the number of queues of the memory-mapped bus device; the number of queues is multiple;

Provide the information of the message signal interruption message configured for each queue to the virtual machine monitor;

Enable message signal interruption for the memory mapped bus device.

Optionally, the provision of information about the message signal interruption message configured for each queue to the virtual machine monitor includes:

Determine whether the message signal interruption message and the interrupt number are successfully allocated, and if so, provide the information of the message signal interruption message configured for each queue to the virtual machine monitor;

If not, perform a single interrupt configuration on the memory mapped bus device.

The address of the message signal interrupt message information configured for each queue is stored in a predefined address register for storing the address of the message signal interrupt message information, so that the virtual machine monitor can obtain the message from the address register Signal the address of the information of the signal interruption message and obtain the information of the message signal interruption message according to the address.

Optionally, it also includes:

Obtain the number of queues of the memory mapped bus device.

Optionally, the obtaining the number of queues of the memory mapped bus device includes:

Obtain the memory space written by the virtual machine monitor to store the number of queues of the memory mapped bus device through the virtual transfer protocol;

The virtual memory mapped input/output is read from the memory space through a virtual transfer protocol.

This application also provides a device for realizing message signal interruption, including:

The interrupt resource allocation unit is used to allocate interrupt resources and initialize the interrupt resources according to the number of queues of the memory mapped bus device when the virtual machine monitor is initialized; the number of queues is multiple;

The message signal interrupt (msi) message information obtaining unit is used to obtain the message signal interrupt (msi) message information configured by the client kernel for the memory mapped bus device;

The information providing unit is configured to provide the configured message signal interrupt message information to the virtual machine management program.

This application also provides an electronic device, including:

Processor; and

The memory is used to store a program for implementing the method for interrupting a message signal. After the device is powered on and running the program for implementing the method for interrupting a message signal through the processor, the following steps are executed:

The present application also provides a storage device that stores a program for implementing a method for interrupting a message signal, and the program is run by a processor to perform the following steps:

This application also provides a serverless processing method for event processing, including:

Receive event information triggered by the user;

Calling a function to calculate and process the event information to obtain a processing result of the event information, wherein the function calculation is implemented by using at least one of the foregoing methods for interrupting a message signal;

The processing result is returned to the user.

This application also provides a serverless processing method using elastic capacity expansion, including:

Receive digital content information sent by users;

Calling function calculation to perform elastic expansion processing on the digital content information to obtain a mixed stream result of the digital content information, wherein the function calculation is implemented by using at least one of the foregoing methods for implementing message signal interruption;

Send the mixed streaming result to the end user.

This application also provides a serverless processing method for IoT data, including:

Receive IoT data sent by the device;

Calling a function to calculate and process the Internet of Things data to obtain a processing result of the Internet of Things data, wherein the function calculation is implemented by using at least one of the above methods for implementing message signal interruption;

The processing result is returned to the user.

Compared with the prior art, this application has the following advantages:

This application provides a method for realizing message signal interruption. The virtual machine monitor allocates interrupt resources according to the number of queues of memory-mapped bus devices, and obtains the message signal interrupt (msi) message information configured by the client kernel for the memory-mapped bus device. , And provide the configured message signal interrupt message information to the hypervisor for several steps, realize the message signal interrupt processing method of the memory-mapped bus device, improve the performance of the interrupt processing of the memory-mapped bus device, and solve the existing virtual Low interrupt performance of input and output devices and multi-queue problems that cannot support virtual machine access.

Description of the drawings

Fig. 1 is a flowchart of a method for realizing message signal interruption provided by the first embodiment of the present application.

FIG. 2 is a schematic diagram of an architecture provided by an embodiment of the present application.

Fig. 3 is a flow chart of providing information of the configured message signal interruption message to the virtual machine management program according to the first embodiment of the present application.

Fig. 4 is a flowchart of a method for realizing message signal interruption provided by the second embodiment of the present application.

FIG. 5 is an application scenario diagram of a serverless processing method for event processing provided by the ninth embodiment of the present application.

Fig. 6 is an application scenario diagram of a serverless processing method using elastic capacity expansion provided by the tenth embodiment of the present application.

FIG. 7 is an application scenario diagram of a serverless processing method for Internet of Things data provided by the eleventh embodiment of the present application.

Detailed ways

In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar popularizations without violating the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation disclosed below.

The first embodiment of the present application provides a method for realizing message signal interruption, and the execution subject is a virtual machine monitor. Description will be given below in conjunction with FIG. 1.

As shown in FIG. 1, in step S101, the virtual machine monitor allocates interrupt resources and initializes the interrupt resources according to the number of queues of the memory-mapped bus device during initialization; the number of queues is multiple.

The Message Signaled Interrupts (MSI, Message Signaled Interrupts) is an interruption method that relies on the device to write a small piece of interrupt description data into a specific address to notify the CPU of the interruption.

The virtual machine monitor (VMM, virtual machine monitor) is a system software that can maintain multiple efficient and isolated program environments. This environment allows users to directly access real hardware. The virtual machine monitor is mainly used to manage virtual machines. Machine resources.

The memory-mapped bus device (MMIO, Memory-mapped I/O) refers to a virtualized memory-mapped bus device, which can be simulated by a virtual machine monitor. For example, virtual network cards and virtual hard disks are memory-mapped bus devices. The memory-mapped bus device may include an mmio device that follows the virtio protocol, which is a transmission protocol created by virtualization, and is used interactively between a user virtual machine and a host (host).

The interrupt resource refers to the interrupt resource used to service the queue of the input/output device.

Allocating interrupt resources according to the number of queues of memory-mapped bus devices refers to allocating an interrupt resource for each queue of memory-mapped bus devices to support multi-interrupt processing of memory-mapped bus devices.

The virtual machine monitor allocates interrupt resources according to the number of queues of the memory-mapped bus device during initialization and initializes the interrupt resources, including: the virtual machine monitor creates a memory-mapped bus device during initialization; allocates interrupts according to the number of queues of the memory-mapped bus device Resources and initialize interrupt resources.

As shown in FIG. 1, in step S102, information about the message signal interrupt (msi) message configured by the client kernel for the memory mapped bus device is obtained.

The client kernel may refer to an operating system running on a virtual machine. For example, if Linux is running on a virtual machine, the guest kernel refers to the Linux operating system. The client kernel in Figure 2 is the guest kernel.

As an implementation manner, the obtaining information about the message signal interrupt message configured by the client kernel for the memory mapped bus device includes:

In order to realize the interaction between the client kernel and the virtual machine monitor, the address register used to store the address of the message signal interrupt message information can be predefined. When the client kernel stores the address of the msi message information in the address register, the virtual machine The monitor can obtain the address information of the configured signal interrupt message information from the address register, and then obtain the information of the signal interrupt message configured by the client kernel for the memory-mapped bus device according to the address information.

As shown in FIG. 1, in step S103, the information of the configured message signal interruption message is provided to the hypervisor.

For example, the hypervisor in FIG. 2 is KVM (Kernel-based Virtual Machine).

The information of the configured message signal interruption message is provided to the virtual machine management program, that is, the configuration process of the message signal interruption is completed.

During specific implementation, the virtual machine monitor may obtain information about a configured message signal interruption message each time, and may provide the configured message signal interruption message information to the hypervisor.

In order to improve efficiency, the virtual machine monitor may first store the information of the configured message signal interruption message in a local cache, and provide the information of multiple configured message signal interruption messages to the hypervisor.

The providing information of the configured message signal interruption message to the hypervisor includes:

Obtain the message signal interrupt enable identification information;

Judging whether to enable the message signal interruption according to the message signal interruption enable identification information, and when the result of the judgment is yes, provide the information of the message signal interruption message stored in the local cache to the hypervisor;

As shown in FIG. 3, it is a flow chart for providing the information of the configured message signal interruption message to the hypervisor of the virtual machine provided by the first embodiment of the application.

The second embodiment of the present application provides a method for realizing message signal interruption, the execution body of which is the client kernel, which will be described below with reference to FIG. 4.

As shown in FIG. 4, in step S401, when the client kernel initializes the memory-mapped bus device, it allocates a corresponding message signal interrupt message and interrupt number to each queue according to the number of queues of the memory-mapped bus device; The number of queues is multiple.

The client kernel may refer to an operating system running on a virtual machine. For example, if Linux is running on a virtual machine, the guest kernel refers to the Linux operating system.

As an implementation manner, the second embodiment of the present application may further include:

Get the number of queues of memory mapped bus devices.

The obtaining the number of queues of the memory mapped bus device includes:

As an implementation manner, before the step of assigning a corresponding message signal interrupt message and interrupt number to each queue according to the number of queues of the memory mapped bus device, the second embodiment of the present application may further include:

Access the processing framework used to process message signal interrupts in the client's kernel.

As shown in FIG. 4, in step S402, a message signal interrupt message is configured for each queue.

When the message signal interrupt message is configured for each queue, the message signal interrupt message can be configured according to the pre-defined msi register.

As shown in FIG. 4, in step S403, the information of the message signal interrupt message configured for each queue is provided to the virtual machine monitor.

The providing the information of the message signal interruption message configured for each queue to the virtual machine monitor includes:

As shown in FIG. 4, in step S404, the message signal interruption is enabled for the memory mapped bus device.

After the client kernel provides the information of the message signal interrupt message configured for each queue to the virtual machine monitor, the message signal interrupt can be enabled for the memory-mapped bus device.

Specifically, the message signal interruption can be enabled according to a predefined register format.

For example, the predefined #define VIRTIO_MMIO_MSI_CSR_ENABLE 0x8000

You can write 1 to VIRTIO_MMIO_MSI_CSR_ENABLE to enable message signal interruption.

So far, the introduction of the first embodiment and the second embodiment of the present application is completed. Through the method of the embodiment of the present application, the message signal interrupt processing method of the memory-mapped bus device is realized, and the performance of the interrupt processing of the memory-mapped bus device is improved. It solves the problem of low interrupt performance of existing virtual input and output devices and the inability to support multiple queues of virtual machine access.

Corresponding to the method for implementing message signal interruption provided by the first embodiment of the present application, the third embodiment of the present application also provides a device for implementing message signal interruption.

The device for realizing message signal interruption includes:

Optionally, the information obtaining unit of the message signal interrupt (msi) message is specifically used for:

Optionally, the information providing unit is specifically configured to:

Obtain the message signal interrupt enable identification information;

It should be noted that, for the detailed description of the device provided in the third embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, which will not be repeated here.

Corresponding to the method for realizing message signal interruption provided by the first embodiment of the present application, the fourth embodiment of the present application also provides an electronic device.

The electronic equipment includes:

Processor; and

Obtain the message signal interrupt enable identification information;

Optionally, the electronic device further executes the following steps:

It should be noted that, for a detailed description of the electronic device provided in the fourth embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, and details are not repeated here.

Corresponding to the method for realizing message signal interruption provided by the first embodiment of this application, the fifth embodiment of this application also provides a storage device that stores a program for realizing the message signal interruption method, and the program is processed When the device is running, perform the following steps:

It should be noted that, for a detailed description of the storage device provided in the fifth embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, and details are not repeated here.

Corresponding to the method for implementing message signal interruption provided by the second embodiment of the present application, the sixth embodiment of the present application also provides a device for implementing message signal interruption. The device includes:

The interrupt message distribution unit is used for when the client kernel initializes the memory-mapped bus device, allocates a corresponding message signal interrupt message and interrupt number to each queue according to the number of queues of the memory-mapped bus device; the number of queues is Multiple

The interrupt message configuration unit is used to configure the message signal interrupt message for each queue;

The configuration information providing unit is used to provide the information of the message signal interruption message configured for each queue to the virtual machine monitor;

The message signal interruption unit is used to enable message signal interruption for the memory mapped bus device.

Optionally, the configuration information providing unit is specifically used for:

Optionally, the device further includes:

The queue quantity obtaining unit is used to obtain the queue quantity of the memory mapped bus device.

Optionally, the queue quantity obtaining unit is specifically configured to:

It should be noted that, for a detailed description of the device provided in the sixth embodiment of the present application, reference may be made to the related description of the second embodiment of the present application, which is not repeated here.

Corresponding to the method for realizing message signal interruption provided by the second embodiment of the present application, the seventh embodiment of the present application also provides an electronic device, including:

Processor; and

Configure the message signal interrupt message for each queue;

Enable message signal interruption for the memory mapped bus device.

Optionally, the electronic device further executes the following steps:

Obtain the number of queues of the memory mapped bus device.

It should be noted that, for the detailed description of the electronic device provided in the seventh embodiment of the present application, reference may be made to the related description of the second embodiment of the present application, which will not be repeated here.

Corresponding to the method for implementing message signal interruption provided by the second embodiment of the present application, the eighth embodiment of the present application also provides a storage device that stores a program for implementing the method for message signal interruption, and the program is processed When the device is running, perform the following steps:

Configure the message signal interrupt message for each queue;

Enable message signal interruption for the memory mapped bus device.

It should be noted that, for the detailed description of the storage device provided in the eighth embodiment of the present application, reference may be made to the related description of the second embodiment of the present application, which will not be repeated here.

The ninth embodiment of the present application provides a serverless processing method for event processing, including:

Receive event information triggered by the user;

Calling a function to calculate and process the event information to obtain a processing result of the event information, wherein the function calculation is implemented using the methods provided in the first embodiment and the second embodiment;

The processing result is returned to the user.

The detailed description will be given below in conjunction with FIG. 5. In Figure 5, after the user uploads various files including pictures, videos, and texts to OSS (Object Storage) through mobile terminals, Web applications, or PC tools, the PutObject event of OSS can be used to trigger function calculations to upload files. To process.

The typical scenario using Figure 5 includes that when a user uploads a video file to OSS, a function calculation is triggered to obtain and transmit the object's Meta information to the core algorithm library. The core algorithm library pushes the corresponding video file to the CDN source station according to the algorithm. The processing of specific video hot loading. In another scenario, after the video file is uploaded to the OSS, the function calculation is also triggered to perform multi-transcoding rate processing simultaneously, and the processed video file is stored in the OSS to complete light-weight data processing.

The function calculation in FIG. 5 uses the method provided in the first embodiment of the present application and is implemented by serverless computing.

The tenth embodiment of the present application provides a serverless processing method using elastic capacity expansion, including:

Receive digital content information sent by users;

Calling function calculation to perform elastic expansion processing on the digital content information to obtain a mixed flow result of the digital content information, wherein the function calculation is implemented using the methods provided in the first embodiment and the second embodiment;

Send the mixed streaming result to the end user. The detailed description will be given below in conjunction with FIG. 6. In Figure 6, the client in the live broadcast room sends the audio and video collections of the anchor and the Lianmai audience to the function calculation to make the mixed streaming service. The function calculation collects the data and submits it to the mixed streaming service for synthesis, and pushes the composite screen video stream to the CDN , The terminal audience pulls the live stream in real time, and can see the mixed stream composite picture in real time.

In the video live broadcast application scenario, there is a scene where multiple people connect to the microphone. The host can connect to multiple jobs at the same time, connect multiple viewers or friends, and synthesize the images into one scene to provide more The audience watching the live broadcast.

The function calculation in FIG. 6 uses the method provided in the first embodiment of the present application and is implemented by serverless computing.

Function computing is used as a real-time audio and video forwarding cluster connected by MIC audiences and anchors. When the amount of concurrency comes, function computing automatically expands multiple execution environments to process real-time data streams; when the business peak period has passed, it will moderately reduce resource usage .

The eleventh embodiment of the present application provides a serverless processing method for IoT data, including:

Receive IoT data sent by the device;

Calling a function to calculate and process the Internet of Things data to obtain a processing result of the Internet of Things data, where the function calculation is implemented using the methods provided in the first embodiment and the second embodiment of the present application;

The processing result is returned to the user.

A detailed description will be given below in conjunction with FIG. 7. In Figure 7 can be divided into 2 parts:

Web application: Simulate a process of social content update and data processing. Web users forward the request to the function calculation through the API gateway for processing. The function calculation updates the processed content to the database and updates the index. Another function calculates the index. The updated search engine provides external customers for retrieval and completes the entire closed-loop data processing.

Smart devices: Push the device status to the function calculation process through the IoT (Internet of Things) gateway, and the function calculation pushes the message through the mobile push service through the API interface to the mobile terminal for status confirmation and management.

The function calculation in FIG. 7 uses the methods provided in the first embodiment and the second embodiment of this application, and is implemented by serverless computing.

Although this application is disclosed as above in preferred embodiments, it is not intended to limit the application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the application. Therefore, this application The scope of protection shall be subject to the scope defined by the claims of this application.

In a typical configuration, the computing device includes one or more processors (CPUs), memory-mapped input/output interfaces, network interfaces, and memory.

The memory may include non-permanent memory in a computer readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.

Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include non-transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

Claims

A method for realizing message signal interruption, which is characterized in that it includes:

During initialization, the virtual machine monitor allocates interrupt resources according to the number of queues of the memory-mapped bus device and initializes the interrupt resources; the number of queues is multiple;

Obtaining information about the message signal interrupt (msi) message configured by the client kernel for the memory mapped bus device;

The information of the configured message signal interruption message is provided to the hypervisor.
The method according to claim 1, wherein the obtaining information about the message signal interrupt message configured by the client kernel for the memory mapped bus device comprises:

Obtain the address information of the information of the message signal interruption message from a predefined address register; wherein the address register is used to store the address of the information of the message signal interruption message;

According to the obtained address information of the information of the message signal interrupt message, the information of the signal interrupt message configured by the client kernel for the memory mapped bus device is obtained.
The method according to claim 1, wherein the providing information of the configured message signal interruption message to a hypervisor comprises:

Saving the obtained information of the message signal interrupt message configured by the client kernel for the memory mapped bus device in a local cache;

Obtain the message signal interrupt enable identification information;

It is determined whether to enable the message signal interruption according to the message signal interruption enable identification information, and when the result of the determination is yes, the information of the message signal interruption message stored in the local cache is provided to the hypervisor.
The method according to claim 3, further comprising:

When the result of the judgment is no, return to the step of obtaining information about the message signal interrupt message configured by the client kernel for the memory mapped bus device.
A method for realizing message signal interruption, which is characterized in that it includes:

When the client kernel initializes the memory-mapped bus device, it allocates a corresponding message signal interrupt message and interrupt number to each queue according to the number of queues of the memory-mapped bus device; the number of queues is multiple;

Configure the message signal interrupt message for each queue;

Provide the information of the message signal interruption message configured for each queue to the virtual machine monitor;

Enable message signal interruption for the memory mapped bus device.
The method according to claim 5, wherein the providing information of the message signal interrupt message configured for each queue to the virtual machine monitor comprises:

Determine whether the message signal interruption message and the interrupt number are successfully allocated, and if so, provide the information of the message signal interruption message configured for each queue to the virtual machine monitor;

If not, perform a single interrupt configuration on the memory mapped bus device.
The method according to claim 5 or 6, wherein the providing information of the message signal interruption message configured for each queue to the virtual machine monitor comprises:

The address of the message signal interrupt message information configured for each queue is stored in a predefined address register for storing the address of the message signal interrupt message information, so that the virtual machine monitor can obtain the message from the address register Signal the address of the information of the signal interruption message and obtain the information of the message signal interruption message according to the address.
The method according to claim 5, further comprising:

Obtain the number of queues of the memory mapped bus device.
The method according to claim 8, wherein the obtaining the number of queues of the memory mapped bus device comprises:

Obtain the memory space written by the virtual machine monitor to store the number of queues of the memory mapped bus device through the virtual transfer protocol;

The virtual memory mapped input/output is read from the memory space through a virtual transfer protocol.
A device for realizing message signal interruption, which is characterized in that it comprises:

The interrupt resource allocation unit is used to allocate interrupt resources and initialize the interrupt resources according to the number of queues of the memory mapped bus device when the virtual machine monitor is initialized; the number of queues is multiple;

The message signal interrupt (msi) message information obtaining unit is used to obtain the message signal interrupt (msi) message information configured by the client kernel for the memory mapped bus device;

The information providing unit is configured to provide the configured message signal interrupt message information to the virtual machine management program.
An electronic device, characterized in that it comprises:

Processor; and

The memory is used to store a program for implementing the method for interrupting a message signal. After the device is powered on and running the program for implementing the method for interrupting a message signal through the processor, the following steps are executed:

During initialization, the virtual machine monitor allocates interrupt resources according to the number of queues of the memory-mapped bus device and initializes the interrupt resources; the number of queues is multiple;

Obtaining information about the message signal interrupt (msi) message configured by the client kernel for the memory mapped bus device;

The information of the configured message signal interruption message is provided to the hypervisor.
A storage device, characterized in that:

A program for implementing a method for message signal interruption is stored, and the program is run by the processor to perform the following steps:

During initialization, the virtual machine monitor allocates interrupt resources according to the number of queues of the memory-mapped bus device and initializes the interrupt resources; the number of queues is multiple;

Obtaining information about the message signal interrupt (msi) message configured by the client kernel for the memory mapped bus device;

The information of the configured message signal interruption message is provided to the hypervisor.
A serverless processing method for event processing, which is characterized in that it includes:

Receive event information triggered by the user;

Calling a function to calculate and process the event information to obtain a processing result of the event information, wherein the function calculation is implemented by using at least one of claims 1-9;

The processing result is returned to the user.
A serverless processing method utilizing elastic expansion, which is characterized in that it includes:

Receive digital content information sent by users;

Calling function calculation to perform elastic expansion processing on the digital content information to obtain a mixed flow result of the digital content information, wherein the function calculation is implemented by using at least one of claims 1-9;

Send the mixed streaming result to the end user.
A serverless processing method for Internet of Things data, which is characterized in that it includes:

Receive IoT data sent by the device;

Calling a function to calculate and process the Internet of Things data to obtain a processing result of the Internet of Things data, wherein the function calculation is implemented by using at least one of claims 1-9;

The processing result is returned to the user.