Hart Trace Interface Fast Track
This document outlines the plan to ratify a RISC-V Specification, establishing a solid foundation and clear expectations for the entire specification development lifecycle. The timeline set here will serve as a reference to monitor progress and ensure milestones are met. Investing in a well-prepared plan promotes effective communication, enhances collaboration, and streamlines the process.
About
Specification Name: Hart Trace Interface
Task Group: HTI Fast-track
Task Group Charter: Extract chapter 4 from the Enhanced Trace for RISC-V standard into a separate standalone specification. No normative changes will be made to the text.
Background
The Efficient Trace for RISC-V standard (E-Trace) includes the definition of an interface for communicating information between a hart and a Trace Encoder external to the hart. However, there is nothing in this interface that is specific to E-Trace, and indeed there are references to this chapter in the N-Trace spec, and it is equally applicable to any other future trace encoding solutions.
Overview
Stakeholders Identification
DTPM SIG
References: Active Groups and Specifications Under Development
Design Considerations
N/A
Proof-of-Concept and Tests
N/A
Software Ecosystem Impacts
N/A
Freeze Checklists
Select one of the options below (ISA or NON-ISA) and complete the table with the required information.
I don’t believe any of the non ISA freeze checklist options are appropriate here as there are no normative changes.
Key Milestones
To define you plan milestone dates, please use the RISC-V Spec Plan Editor.
Milestone | Date |
|---|---|
Plan Approval | Jun 11, 2025 |
Internal Review Start | Sep 8, 2025 |
ARC Review Freeze Request | Nov 5, 2025 |
Freeze | Jan 9, 2026 |
Public Review Start | Jan 10, 2026 |
TSC Ratification Approval | Mar 10, 2026 |
BoD Ratification Approval | Mar 26, 2026 |
Additional Notes
@Rafael Sene updated the milestones date to reflect the Ratification Approval date.
RISC-V International