weichen81/unikraft

Unikraft for Arm

Unikraft - "Unikernel Crafting"

Unikraft is an automated system for building specialized OSes and unikernels tailored to the needs of specific applications. It is based around the concept of small, modular libraries, each providing a part of the functionality commonly found in an operating system (e.g., memory allocation, scheduling, filesystem support, network stack, etc.).

In addition, Unikraft has the concept of external libraries. These are what we commonly understand as standard libraries such as libc or openssl, and help to enhance the functionality of Unikraft and the range of applications it is able to support.

Unikraft supports multiple target platforms (e.g., Xen, KVM and Linux userspace for development purposes), so that it is possible to build multiple images, one for each platform, for a single application without requiring the application developer to do any additional, platform-specific work.

The configuration and build process are driven by a menu system inspired by Linux's kConfig system, making it easy to choose different libraries and configure them. This simplifies the process of trying out different configurations in order to extract the best possible performance out of a particular application.

In all, Unikraft is able to build specialized OSes and unikernels targeted at specific applications without requiring the time-consuming, expert work that is required today to build such images.

For more information information about Unikraft, including user and developer guides, please refer to the docs/guides directory.

Further resources

• Sources at Xenbits
• Project Wiki
• Unikraft Team
• Mailing List Archive
• Mailing List Subscription
• Research Project at NEC Labs Europe

unikraft's Issues

hello world can't run on arm64 hardware

I get a trap when I try to boot the vm:

[    0.000000] ERR:  [libkvmplat] traps.c @ 67   : Unikraft: EL1 sync trap caught
[    0.000000] ERR:  [libkvmplat] traps.c @ 38   : Unikraft: Dump registers:
[    0.000000] ERR:  [libkvmplat] traps.c @ 39   : 	 SP       : 0x0000000040024f80
[    0.000000] ERR:  [libkvmplat] traps.c @ 40   : 	 ESR_EL1  : 0x0000000096000061
[    0.000000] ERR:  [libkvmplat] traps.c @ 41   : 	 ELR_EL1  : 0x0000000040011038
[    0.000000] ERR:  [libkvmplat] traps.c @ 42   : 	 LR (x30) : 0x0000000040011000
[    0.000000] ERR:  [libkvmplat] traps.c @ 43   : 	 PSTATE   : 0x00000000200003c5
[    0.000000] ERR:  [libkvmplat] traps.c @ 44   : 	 FAR_EL1  : 0x000000000900000b
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x00 ~ x03: 0x0000000009000000 0x0000000000000060 0x0000000000000101 0x0000000000000003
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x04 ~ x07: 0x0000000000000067 0x0000000000000067 0x0000000000001618 0x0000000000000003
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x08 ~ x11: 0x0000000040000000 0x0000000040024eac 0x00000000000015fc 0x000000000000159c
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x12 ~ x15: 0x0000000000000000 0x0000000040000000 0x000000004001f000 0x0000000000000000
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x16 ~ x19: 0x0000000000000000 0x0000000000000000 0x0000000000000000 0x000000004001e000
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x20 ~ x23: 0x0000000040000000 0x0000000000000000 0x0000000000000000 0x0000000000000000
[    0.000000] ERR:  [libkvmplat] traps.c @ 50   : 	 x24 ~ x27: 0x0000000000000000 0x0000000000000000 0x0000000040025000 0x000000004001f000
[    0.000000] ERR:  [libkvmplat] traps.c @ 53   : 	 x28 ~ x29: 0x0000000000000000 0x0000000040024f80
[    0.000000] CRIT: [libkvmplat] traps.c @ 71   : EXIT
Unikraft halted

The command I use is

qemu-system-aarch64 -M virt -cpu host -smp 1 -enable-kvm -nographic -kernel helloworld_kvm-arm64

The hardware I'm using is hikey 960 with open embedded rocko image. The qemu is built from openembedded-core.