Downstream fork with support for Hygon CPUs (HygonGenuine)

[wei-w-wang]

Hi everyone,

Following up on a recent PR review and discussion with the maintainers (#5905), I wanted to share a downstream fork of Firecracker that adds support for Hygon processors:
https://gitee.com/hygon-cloud/firecracker-hygon

Moving forward, the Hygon engineering team plans to validate this fork by running the functional integration suite (tests/integration_tests/functional/).

Feedback, testing, and questions from the community are always welcome!

Thanks!

[wei-w-wang]

We have rebased the downstream patches onto Firecracker v1.18.0 and pushed a new branch: firecracker-1.18.0-dev-hygon-basic-support

Validation status:

• Added patches to support the functional integration test suite (tests/integration_tests/functional/).
• Executed the test suite on Hygon hardware (Gen 4H); the vast majority of functional test cases are now passing.

Anyone experimenting with Hygon platforms is welcome to pull the new branch and test it out. If you hit any unexpected failures or edge cases during testing, feel free to share feedback or open issues on our downstream repo.