microsoft / microsoft/openvmm

openhcl_boot: implement GHCB based io ports to support com3 output

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enhancement tdx
Dominant language
Rust
Stars
1.9k
Forks
238
Avg merge
1d 15h
Merged PRs (30d)
100

Description

We should do this so you can get early logging output like TDX.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the openhcl_boot implementation and tracing how existing TDX early logging reaches COM3. Read the GHCB-related paths and any I/O-port handling already present. Done means GHCB-based I/O ports support early COM3 output for OpenHCL, matching the issue’s logging goal.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
operating-systems
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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