About

This work item:

• Aims to add the riscv64gc-unknown-linux-gnu Rust Language target triplet to the Rust Language github CI runner infrastructure.

• Aims to use the same target platform and target root file-system assets as used in LR_07_001.

• Aims to use an experimental branch in the upstream CI runner infrastructure. This is expected to be the case until Tier-1 attainment.

Upon successful implementation, the riscv64gc-unknown-linux-gnu Rust Language target triplet will automatically get tested upon every commit to the Rust Language github repository's main branch. This essentially paves the way for Tier-1 attainment.

Updates

• Here's the PR tracking the CI loop enablement.

• While exploring options, a remote test variant was chosen. This limits testing to "target" support, and skips "host tools" support.

• This is because using Rust's normal testing infrastructure (Docker), the test suite required for a "Tier 1 with Host Tools" test is significantly over 6 hours, even on quite powerful hardware.

• The Dockerfile tested is located here.

• According to the Target Tier policy, such long test times alone are enough to disqualify a target from reaching Tier 1.

• In the interim, we are pursuing "Tier 1 (without host tools)".

• This will ensure that the target tests (aka the functionality of artefacts produced by the x86_64 platform to be executed on the riscv64gc platform) would pass, without requiring the tools to be passing.

• Alongside that work, we are pursuing successful (and fast) full host test suite runs in partnership with Scaleway.