Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

Summary

Enables CONFIG_LWTUNNEL_BPF (Lightweight Tunnel BPF) support in the kernel. This allows attaching eBPF programs to routing entries (via encap bpf) so routes can execute BPF-based encapsulation/forwarding actions without requiring a dedicated tunnel netdevice. No behavior changes unless encap bpf routes are configured.

Enable SCHED_CORE to support core scheduling, allowing the scheduler to restrict which tasks may co-run on sibling hyperthreads for improved SMT isolation and side-channel risk reduction.

Change Log

• Enable LWTUNNEL_BPF and SCHED_CORE

Does this affect the toolchain?

YES

Associated issues

Deliverable 60731579
Deliverable 56815298
Deliverable 56763828
#8224

Test Methodology

• Pipeline build id: xxxx