MilvusVisor v1.5.0

[PG-MANA]

Changes from version 1.4.1

• Update Rust Edition to 2024
  • Refactor by following cargo clippy
• uefi/pxe: Add the error information
• hypervisor_bootloader/console: Add lifetime
  • Avoid using MaybeUninit
• hypervisor_kernel/emulation: Add EmulationError
  • Throw error reasons to the exception handler
• hypervisor_bootloader: Fix set_up_el1
  • Move the register initializations after setting HCR_EL2
• hypervisor_kernel: Fix multi core initialization
• build_system: Change build system to cargo xtask from ./builder.rs
  • You can build MilvusVisor via cargo xtask build
  • bootloader and kernel can define features independently now
    • xtask parses Cargo.toml and filter the features

Waiting Issues

• Rust Edition 2024
• Stabilize naked_functions
  • If you want to build this branch before stabilizing this feature, please add #![features(naked_functions)] to src/hypervisor_kernel/src/main.rs

[fukai-t]

@fukai-t fukai-t deleted a comment from garasubo Mar 4, 2025

@garasubo and I talked about the next release, and we confirmed that the comment is unnecessary. So I have deleted the comment.

By the way, I should add the description more about the procedure of next release because the situation of this release is special.

[PG-MANA]

naked_functions will be stabilized at Rust 1.88.
Now, MilvusVisor 1.5.0 is ready to merge.

Note

Rust 1.88 will be released 2025/06/26, therefore MilvusVisor 1.5.0 still needs nightly compiler(today ~ 2025/05/15), or beta compiler(2025/05/16 ~ 2025/06/26)

[fukai-t]

@PG-MANA I want to confirm about the scheduled build tests. Is the following correct?

Build test with latest nightly version of Rust

The last two build tests on main branch failed because the naked_functions is stabilized in the latest nightly version of rust. This is expected results.

• https://github.com/RIKEN-RCCS/MilvusVisor/actions/runs/14567348438
• https://github.com/RIKEN-RCCS/MilvusVisor/actions/runs/14586769937

After merging this PR, the scheduled build test will success.

Build test with stable version of Rust

Currently, the build test failed with stable version of Rust because the stabilized naked_function has not been included in the stable version yet. The stable version of Rust including naked_function will be released on 2025/06/26 (27 or 28 in Japan?)
Until this release, the monthly build test will fail. It is also expected.

• https://github.com/RIKEN-RCCS/MilvusVisor/actions/runs/14585110603/job/40909161473?pr=15

[fukai-t]

@PG-MANA Thank you for the response.
I will track the monthly build test by stable release of rust 1.88 on #17.

Other changes looks good to me. So I will merge this PR into main branch.

[PG-MANA]

I want to confirm about the scheduled build tests. Is the following correct?
Build test with latest nightly version of Rust

Yes, the nightly build CI will success after the merge.
Note: The reason failing is not stabilizing naked_functions, but the change of the attribute style.

Build test with stable version of Rust

Yes, it is expected.
The best way is to wait the merge until the release, but it takes a long time.