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https://github.com/kkimj/domainprocessisolation-aarch64

EFFICIENT DOMAIN-LEVEL PROCESS ISOLATION ON AARCH64​, Customized Linux Kernel
https://github.com/kkimj/domainprocessisolation-aarch64

aarch64 arm-ds armv8 fvp linux-kernel process-isolation

Last synced: about 2 months ago
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EFFICIENT DOMAIN-LEVEL PROCESS ISOLATION ON AARCH64​, Customized Linux Kernel

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README 

        
# Efficent_Process_Isolation_Domain_Level_AArch64

EFFICIENT DOMAIN-LEVEL PROCESS ISOLATION ON AARCH64​



## Getting Started

### Prerequisites



#### Dependencies

```

$ sudo apt-get install libxml2-dev genext2fs android-tools-adb tree python-dev gcc-multilib python bridge-utils python-numpy sshpass python-wand libxml2-utils libfreetype6-dev python-pip g++-multilib screen python-wrapt python-nose libncurses5:i386 cython gperf libstdc++6:i386 acpica-tools python-matplotlib android-tools-fastboot python-mako trace-cmd libc6:i386 kernelshark



$ sudo apt-get install chrpath gawk texinfo libssl-dev diffstat wget git-core unzip gcc-multilib \

 build-essential socat cpio python python3 python3-pip python3-pexpect xz-utils debianutils \

 iputils-ping python3-git python3-jinja2 libegl1-mesa libsdl1.2-dev pylint3 xterm git-lfs openssl \

 curl libncurses-dev libz-dev python-pip repo



$ sudo -H pip2 install --upgrade pip

$ pip2 install pandas pyserial trappy

$ pip2 install devlib jupyter nose

$ pip2 install IPython bart-py

$ pip2 install IPython bart-py devlib jupyter nose pandas pyserial trappy

```



#### [Arm DS](https://developer.arm.com/tools-and-software/embedded/arm-development-studio)



***



### Installation



#### [FVP, Fixed Virtual Platforms](https://developer.arm.com/tools-and-software/simulation-models/fixed-virtual-platforms)



```

$ repo init -u https://git.linaro.org/landing-teams/working/arm/arm-reference-platforms-manifest.git -m fvp-yocto.xml -b refs/tags/BASEFVP-2020.08.06

$ repo sync -j 4

```



```

$ git clone https://github.com/KKimj/DomainProcessIsolation-AArch64/



$ cd DomainProcessIsolation-AArch64

$ cd arm-reference-platforms

$ sudo python3 5518.armplat_1901.py

```



```

## Verified on Ubuntu 16.04 LTS, 18.04 LTS

## Model: FVP_Base_AEMv8A_revC version 11.8



$ cd arm-reference-platforms



$ python3 5518.armplat_1901.py

-> Answer 2 2 1 1 1 1 2 2 2 1



## Please select a platform:

 1) Development boards

 2) Fixed Virtual Platforms (FVPs)

> 2



## Please select a platform:

 1) System Guidance

 2) Armv8 architecture

> 2



## Please select a platform:

 1) Armv8-A Base Platform      -- 11.3.30+ (Rev C)

 2) Armv8-A Foundation Model   -- 11.3.30+

> 1



## Please select a platform:

 1) Armv8-A Base Platform with 64-bit software stack

 2) Armv8-A Base Platform with legacy 32-bit software stack

> 1



## Please specify whether you want to:

 1) Build from source

 2) Use prebuilt configuration

> 1



## Please select an environment:

 1) Linux kernel & userspace filesystem

 2) Firmware & test suites

> 1



## Please select your kernel:

 1) Linaro/ArmLT Android Common Kernel

 2) Linaro/ArmLT Latest Stable Kernel

> 2



## Please select your filesystem:

 1) BusyBox

 2) OpenEmbedded

> 2



## Please select your filesystem:

 1) OpenEmbedded LAMP

 2) OpenEmbedded Minimal

> 2



## Your chosen configuration is shown below:

    +---------------+----------------------------------------------------------+

    | Workspace     | /home/tosois01/linaro/19.01_9p/                          |

    | Platform      | Armv8-A Base Platform with 64-bit software stack         |

    | Type          | Build from source                                        |

    | Configuration | Linaro/ArmLT Latest Stable Kernel + OpenEmbedded Minimal |

    +---------------+----------------------------------------------------------+



The following software components are included:

    +-----------------------------------+-------------------------+

    | Trusted Firmware-A                | 2.0 commit dbc8d9496e   |

    | OP-TEE OS                         | 3.0 commit 94ee4938f7   |

    | OP-TEE Client                     | 3.0 commit 09b69afa5e   |

    | Linaro/ArmLT Latest Stable Kernel | 4.19 commit e97e8d868a  |

    | OpenEmbedded Minimal              | 15.09 4.9_20150912-729  |

    +-----------------------------------+-------------------------+



## Proceed with this configuration?:

 1) Yes

 2) No

> 1



$ ./patch_9p.sh

patching file linux/arch/arm64/boot/dts/arm/fvp-base.dtsi

patching file linux/linaro/configs/linaro-base.conf

patching file model-scripts/run_model.sh

patching file linux/linaro/configs/vexpress64.conf

patching file u-boot/include/configs/vexpress_aemv8a.h



$ ./build-scripts/build-all.sh all



# edit run.FVP_Base_AEMv8A_revC_118.sh



$ ./run.FVP_Base_AEMv8A_revC_118.sh



################################################################################



root@genericarmv8:~# dmesg | grep 9p

[    2.213610] 9p: Installing v9fs 9p2000 file system support

[    3.119498] 9pnet: Installing 9P2000 support



root@genericarmv8:~# mount -t 9p -o trans=virtio,version=9p2000.L FM /mnt



root@genericarmv8:~# ls -l /mnt/

total 8

drwxrwxrwx    2 root     root          4096 Jul 12 12:28 test



## Access directory must have permission 777 (rwxrwxrwx) so that GuestOS can write



root@genericarmv8:~# echo AAA > /mnt/test/a

root@genericarmv8:~# cat /mnt/test/a

AAA



## echo BBB > /mnt/test/a on HostOS



root@genericarmv8:~# cat /mnt/test/a

BBB

```



#### Installation Screen, It takes very very long time

![It takes very very long time](screenshots/screenshot4.PNG?raw=true "Title")



## Examples



![Alt text](screenshots/screenshot1.PNG?raw=true "Title")



![Alt text](screenshots/screenshot2.PNG?raw=true "Title")



```c

// exec.c

int do_execve(struct filename *filename,

	const char __user *const __user *__argv,

	const char __user *const __user *__envp)

{

	volatile unsigned int spsr = 0;

	struct user_arg_ptr argv = { .ptr.native = __argv };

	struct user_arg_ptr envp = { .ptr.native = __envp };

/*

...

*/

	if(filename->name[2] =='t' && filename->name[3] == 'm' && filename->name[4] == 'p')

	{

		

		asm volatile (

			"ldr %[spsr], [sp, #0x1C8]\n\t"

			"orr %[spsr], %[spsr], 0x00000004\n\t"

			"str %[spsr], [sp, #0x1C8]\n\t"

			: [spsr]"=r" (spsr)

			: 

			:

		);

	}

/*

...

*/

}

```



![Alt text](screenshots/screenshot3.PNG?raw=true "Title")



## References

- How to Install & Setup FVP

  - https://community.arm.com/developer/tools-software/oss-platforms/f/dev-platforms-forum/44264/how-to-enable-share-folders-between-fvp-and-host-linux

  - ~~https://git.linaro.org/landing-teams/working/arm/arm-reference-platforms.git/about/docs/basefvp/user-guide.rst~~

- git repository, Arm Reference Platforms

  - https://git.linaro.org/landing-teams/working/arm/arm-reference-platforms.git/ 

- How to setup Arm DS for Debugging

  - https://community.arm.com/developer/tools-software/tools/b/tools-software-ides-blog/posts/debugging-the-armv8-a-linux-kernel-with-ds-5 

  - https://community.arm.com/developer/tools-software/oss-platforms/f/dev-platforms-forum/48420/warning-dts3-nal2-fvp-linux-kernel-debug

- Linux Kernel code

  - https://elixir.bootlin.com/linux/v4.20.17/source/arch/arm64/kernel/process.c

- _do_fork()

  - http://egloos.zum.com/rousalome/v/9989596  

- Tread info

  - http://egloos.zum.com/rousalome/v/10012047

- PSTATE Register

  - https://sonseungha.tistory.com/464 

- Blog about AArch64

  - [https://gongpd.tistory.com/category/하드웨어 스케치북](https://gongpd.tistory.com/category/%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4%20%EC%8A%A4%EC%BC%80%EC%B9%98%EB%B6%81)

- [My Blog](https://blog.naver.com/PostList.nhn?blogId=ziun99&from=postList&categoryNo=88)