jailhouse到RISC-V移植支持

# jailhouse到RISC-V移植支持

- 项目名称
jailhouse到RISC-V移植支持

- 项目描述：
  （1）相关背景：openEuler embedded通过部署混合关键系统(MCS)，允许在单块硬件上同时运行多个操作系统，以实现多样化任务的资源隔离与调度。而为了确保多OS协同运作的安全性，必须确保OS间的资源隔离。openEuler embedded使用了由西门子主导的开源轻量级hypervisor——jailhouse来实现这一目标。
  （2）已有的工作：openEuler embedded在ARM/X86上已经实现了基于jailhouse部署混合系统，jailhouse本身也支持在ARM/x86的QEMU上运行，并且在RISC-V方面有一定的学术成果。
  （3）存在的不足：目前jailhouse主干和openEuler embedded使用的版本均缺少对RISC-V的支持，并且已有的RISC-V相关的研究成果对RISC-V新的中断架构AIA研究不足。
  （4）希望改进的点：
            - 补充对jailhouse的分析文档，包括对jailhouse的架构设计，jailhouse在RISC-V上的移植方案，以及基于RISC-V AIA支持jailhouse虚拟化中断直通的方案。
            - 为openEuler embedded使用的jailhouse添加RISC-V以及基于AIA的中断直通支持。
  （5）最终项目实现的目标：完成对jailhouse设计的全面分析以及jailhouse在RISC-V上的移植方案，在社区进行汇报和分享。并且基于移植方案在实现了AIA的RISC-V环境上使用jailhouse部署中断直通的openEuler embedded。
  
-   项目难度
进阶

-   技术领域标签：嵌入式虚拟化，混合关键系统
-   编程语言标签：C
-   项目产出要求：
    1. 完成对jailhouse设计的全面分析以及jailhouse在RISC-V上的移植和基于AIA的中断直通方案，并且在社区进行分享。
    2. 基于移植方案，在支持AIA的RISC-V环境上实现基于jailhouse和中断直通部署的openEuler embedded，并进行性能测试。

- 项目技术要求：
对虚拟化有基础了解，熟悉嵌入式和C编程

-   项目成果提交仓库：
https://gitee.com/openeuler/RISC-V

-   预估工时
8-12周

-   项目备注
    - Jailhouse GitHub repository: https://github.com/siemens/jailhouse
    - Related work on embedded virtualization:
        - https://arxiv.org/abs/1705.06932
        https://arxiv.org/abs/2208.02703
    - Repository of Bao, a static partitioning hypervisor similar to Jailhouse: https://github.com/bao-project/bao-hypervisor
-   项目导师名字&导师邮箱：
李金哲&jinzhe.oerv@isrc.iscas.ac.cn

- Project Name
Research on Jailhouse Support for RISC-V

- Project Description：
  （1）Background: openEuler embedded deploys Mixed Criticality Systems (MCS) to allow multiple operating systems to run on a single hardware platform, achieving resource isolation and scheduling for diverse tasks. To ensure the security of multi-OS collaboration, strict resource isolation between operating systems is necessary. openEuler embedded uses Jailhouse, an open-source lightweight hypervisor led by Siemens, to achieve this goal.
  （2）Existing Work: openEuler embedded has already implemented mixed systems based on Jailhouse on ARM and x86 architectures. Jailhouse itself supports running on ARM/x86 QEMU, and there are some academic achievements related to RISC-V.
  （3）Current Limitations: The main branch of Jailhouse and the version used by openEuler embedded currently lack support for RISC-V. Additionally, existing research on RISC-V, especially regarding the new RISC-V Advanced Interrupt Architecture (AIA), is insufficient.
  （4）Improvement Goals: 
        - supplement the analysis document for Jailhouse, including its architectural design, the porting solution of Jailhouse on RISC-V, and the virtualization interrupt passthrough solution for Jailhouse based on RISC-V AIA.
        - add RISC-V support and AIA-based interrupt passthrough support to the Jailhouse used in openEuler Embedded.
  （5）Final Project Goals: Completed a comprehensive analysis of the Jailhouse design and the porting solution of Jailhouse on RISC-V, and presented and shared the findings within the community. Additionally, deployed openEuler Embedded with interrupt passthrough using Jailhouse on a RISC-V environment that implements AIA.
  
-   Project Difficulty:
Basic

-   Technical Domain Labels: Embedded Virtualization, Mixed-Criticality Systems
-   Programming Language Labels: C
-   Project Deliverables:
    1. Completed a comprehensive analysis of the Jailhouse design, as well as the porting of Jailhouse to RISC-V and the interrupt passthrough solution based on AIA.
    2. Based on the porting solution, implemented openEuler Embedded with Jailhouse and interrupt passthrough on a RISC-V environment that supports AIA.

- Technical Requirements:
Basic understanding of virtualization.
Familiarity with embedded systems and C programming.

-   Project Submission Repository:
https://gitee.com/openeuler/RISC-V

-   Estimated Duration:
8-12 weeks

-   Additional Notes:
    - Jailhouse GitHub repository: https://github.com/siemens/jailhouse
    - Related work on jailhouse:
        - https://arxiv.org/abs/1705.06932
        - https://arxiv.org/abs/2208.02703
    - Repository of Bao, a static partitioning hypervisor similar to Jailhouse: https://github.com/bao-project/bao-hypervisor
-   Project Mentor Name & Email:
Li Jinzhe & jinzhe.oerv@isrc.iscas.ac.cn

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