Page History

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Develop final charter and plan with the group and send to Chairs (tech-chairs@lists.riscv.org) for approval within 4 weeks
Fill in DoD Plan tab in checklist and send to chairs for approval of any deliverables that don't match the defaults along with any requested waivers
Freeze-time preliminary POC definition approved by IC
Fill in task group and specification status spreadsheet information including extension or extension group names, projected dates, DoD component effort sizing, DoD tasks your group needs resource help with,...
Develop Rationale document and send to chairs for approval
Notify TSC and Chairs when you complete this milestone and include any waivers and an updated DoD spreadsheet.
Plan: RISCV has prioritized RVA22. expect CLIC to possibly be ratified at similar times with RVM22 with other embedded extensions like Zfinx, new compressed, rv32e, p-extension. So CLIC still on roadmap but probably next gen RISC-V grouping. Continue working on issues and refining spec.
Hypervisor support? One simple option is CLIC doesn’t work with H? Both CLIC and AIA are evolving. CLIC problematic places: table read hardware vectoring. Otherwise no real complication. If systems have both AIA and CLIC, how would it work. Maybe don’t need to worry about it?
Impact of N-extension on CLIC? Update CLIC spec to not rely on N-extension but add commentary on if N-extension is ratified how it would work with CLIC.

Charter

Current Charter at https://github.com/riscv/groups/tree/main/Fast-Interrupts to be moved to https://github.com/riscv-admin-docs (possibly renamed)
Develop a low-latency, vectored, priority-based, preemptive interrupt scheme for interrupts directed to a single hart, compatible with the existing RISC-V standards. Provide both hardware specifications and software ABIs/APIs. Standardize compiler conventions for annotating interrupt handler functions.

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Latest Draft Fast Interrupt Specification (v0.9-draft-2021062220210706)
- reverted text describing more CLIC memory mapped privilege regions and added clarification text.
What's next:
- 31 29 outstanding issues to be addressed. (previously 3631).

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