2025

October

• 
  

• ​Oct 3, 2025The vote on the Advanced Core-Local Interrupt Controller Spec concluded with 4 of 5 ballots cast; the majority threshold was not met (1 Approve, 3 Object), so the spec was not approved and will return to the authors and Privileged IC Chairs for revision.

• ​Oct 2, 2025TSC has started voting on the Crypto SIG Charter via OpaVote, running through October 16, 2025.

• ​Oct 2, 2025TSC has approved the Load-Acquire/Store-Release (Zalasr) Fast Track Extension (18–0–0), clearing it for submission to the Board for final ratification in October.

• ​Oct 1, 2025David Harris (Harvey Mudd College) was elected Chair and Adnan Hamid (Breker Verification Systems) Vice-Chair in the first CSC Test Plan Work Group elections.

September

• ​Sep 30, 2025 ARC Meeting Minutes for ​Sep 23, 2025 published. The ARC approved the Svukte extension, provided clarification guidance to the RPMI authors, engaged with the CHERI TG ahead of next month’s in-person meeting, initiated review of the Ziccid specification in consultation with the JITed and Dynamic Languages SIG, and continues steady review of the Supervisor Domains spec toward its next iteration.

• ​Sep 28, 2025 Support for the Zicfilp extension has been added to the Sail model.

• ​Sep 26, 2025 Week in Review: mailing lists this week included discussion on the Integrated Matrix Extension “Option G” figure generator (clarifications on “L (elements/VR)” and LMUL/widening) in tech-integrated-matrix-extension; an internal review/PR for the Hart-to-Trace Interface (RHTI) in sig-debug-trace-perf-mon and soc-infra; a proposed charter revision in sig-documentation; a BLIS retreat notice in sig-ml-ai-apps (cc: sig-hpc); a Summit NA flyer share in tech-ops-meeting; and membership updates in tech-vme.

• ​Sep 25, 2025 Vector Digital Signal Processing TG was approved by the BoD.

• ​Sep 24, 2025 ARC Meeting Minutes for ​Sep 16, 2025 published. Reviews continued on Supervisor Domains and the SPMP draft, Zvzip was deferred to 9/23, and ARC provided feedback to the Scalar Efficiency SIG on potential Fast Track candidates.

• ​Sep 24, 2025RISC-V Technical Session | Microarchitecture-Aware Custom RISC-V Instruction Design will be held on ​Oct 9, 2025. Register here.

• ​Sep 23, 2025Internal Review started for PMP-based Memory Types Fast Track Extension. It ends on ​Oct 8, 2025.

• ​Sep 23, 2025The PMP-based Memory Types Fast Track Extension completed its Development milestone.

• ​Sep 23, 2025The RQSC Table Specification completed its Development Complete milestone.

• ​Sep 22, 2025Call for Candidates for Automotive SIG started. It will end on ​Oct 6, 2025.

• ​Sep 22, 2025Concluding today, the AME Task Group approved (17–1, with 1 abstention) the proposed package of instructions, covering memory load/store, element-wise operations, and matrix-matrix multiplication, after a one-week OpaVote ballot, confirming broad support for advancing the Attached Matrix Extension (AME).

• ​Sep 19, 2025Call for Candidates for Instrumentation Trace started. It will end on ​Oct 3, 2025.

• ​Sep 19, 2025 Developer Board Program application forms added for Milk-V Megrez (limited availability), ESWIN EBC77, Banana Pi F3, Orange Pi RV2.

• ​Sep 19, 2025 Development Board Minutes for ​Sep 18, 2025Published. Watching Milk-V Titan launch for October 15th, expecting a board to be present at NA Summit Developer Zone. Reviews of BSD, Arch Linux, Gentoo, and Fedora-V Force.

• ​Sep 19, 2025 CSC Week in Review: discussions spanned TPWG charter finalization and governance on csc, certification test-plan mechanics on csc-test-plan (ECALL → JAL handlers, continue-on-failure, golden-model outputs), plus requirements and coordination updates on csc-requirements and csc-leads.

• ​Sep 19, 2025 Week in Review: mailing lists this week included discussions on VME accumulator counts, mtime writability and platform terminology, CHERI profile handling in governance, persistence flush extensions in Datacenter SIG, performance-events taxonomy and sampling, AI/ML scope in AME, tooling and DCO checks in Documentation/UnifiedDB, Server SoC agenda and planning, and matrixes for compliance and coverage.

• ​Sep 19, 2025 RVM Profile TG started its Call for Participation. It will end on ​Oct 3, 2025.

• ​Sep 17, 2025 ARC Minutes for ​Sep 9, 2025Published. Reviews continued on Smmpt and Supervisor Domains, ARC began assessing a new CHERI draft ahead of in-person discussions at the North American Summit, and feedback was provided on the improved Zvzip draft.

• ​Sep 16, 2025 ARC Minutes for ​Sep 2, 2025 Published. Supervisor Domains, IOPMP, and SPMP reviews continued this week, with ARC feedback focusing on reducing optionality in the IOPMP spec and suggesting some content be moved to a white paper.

• ​Sep 15, 2025CLIC has received Technical Committee approval, confirming specification development is complete. It now proceeds to Governing Committee approval. Once approved, the specification moves into stabilization.

• ​Sep 15, 2025Server Platform Specification is now Stable and moves into working on Freeze. Approval details available at ​RVS-4160: [Stabilization] - Technical Project Specification Stabilization Approval (required)Approved .

• ​Sep 12, 2025RISC-V Technical Session | TYRCA: A RISC-V Tightly-Coupled Accelerator For Code-Based Cryptography. Video available on YouTube.

• ​Sep 12, 2025 Week in Review: mailing lists this week included RHTI fast-track proposals, trace state handling, and spec versioning, fast-track requests for new addressing modes, and CSC requirements, test plan activities, RVCP operational definitions, and leadership coordination.

• ​Sep 10, 2025 TSC approved the Proposal of Work for the Vector Digital Sign TG. BoD approval is scheduled for ​Sep 25, 2025.

• ​Sep 9, 2025 TSC elections concluded. ​@Greg Favor​ elected Chair and ​@Philipp Tomsich​ elected Vice-Chair.

• ​Sep 9, 2025Event Trace TG elections concluded. ​@Bruce Ableidinger​ elected Chair and ​@Boris Shulman​ elected Vice-Chair.

• ​Sep 8, 2025 Spec Plan Editor update. Start From, Task Dependency and Three-Point Estimates added.

• ​Sep 8, 2025Public Review Period ended for Load-Acquire/Store-Release (Zalasr).

• ​Sep 5, 2025 Week in Review: mailing lists this week included discussions on VME accumulator counts, mtime writability and platform terminology, CHERI profile handling in governance, persistence flush extensions in Datacenter SIG, performance-events taxonomy and sampling, AI/ML scope in AME, tooling & DCO checks in Documentation/UnifiedDB, and Server SoC agenda/planning.

• ​Sep 5, 2025 All Disclosures are updated.

• ​Sep 4, 2025TSC Gap Analyses Published.

• ​Sep 3, 2025RISC-V Technical Session | Tensor Program Optimization for the RISC-V Vector Extension. Video available on YouTube.

• ​Sep 3, 2025The RVA23.1 and RVB23.1 profiles were admitted to follow the fast track process. Both are now under Planning.

• ​Sep 3, 2025 ARC Meeting Minutes for 2025-08-26 Published. The ARC clarified that MPTE/MTE bit updates in the tcontrol CSR by the Snrnmi extension are invisible to M-mode debugging (to be noted non-normatively in the spec), approved fast-track RVA23.1/RVB23.1 with Ssctr guidance, continued SPMP and Supervisor Domains reviews, and recommended CTR/Svadu as optional and Zkr as mandatory in the draft Server Platform spec.

• ​Sep 3, 2025Internal Review period for RISC-V Internal Review: Zvfbfa and Zvfofp8min, Zvldot and Zvbo, and Ziccid ended without any feedback. Specifications move to Freeze.

• ​Sep 3, 2025libiopmp v0.1.0 was released under the IOPMP TG GitHub repo, an extensible driver supporting the latest IOPMP spec v0.8, multiple models/configurations, and reference programs for easy testing and feedback.

• ​Sep 3, 2025 The Smpmpmt Fast Track extension has been approved for the Ratification Plan milestone.

• ​Sep 3, 2025 The Integer Vector Absolute Difference Extension has been approved for the Ratification Plan milestone. 

• ​Sep 2, 2025 IOPMP Specification update: alignment on simplifying the IOPMP spec by keeping a streamlined core in the standard while moving complex options and guidance into application notes, with ​@Channing Tang​ and ​@Paul Ku​ leading the review and ARC engaged for iterative feedback.

• ​Sep 1, 2025 Next RISC-V Technical Session published: TYRCA: A RISC-V Tightly-Coupled Accelerator For Code-Based Cryptography. ​Sep 11, 2025, 7 a.m Pacific Time.

• ​Sep 1, 2025 Call for Participants, Voters and Observers for Long Instruction TG ended.

• ​Sep 1, 2025 psABI elections concluded: ​@Kito Cheng​ elected Chair and ​@Jessica Clarke​ elected Vice-Chair.

• ​Sep 1, 2025 Sail Development Highlights

  • Support for the RV32E and RV64E base ISAs has been added.

  • Support for the Zihintntl and Zihintpause extensions has been added.

• ​Sep 1, 2025 Call for Participation for the Instrumentation Trace started.

August

• ​Aug 29, 2025Attached Matrix Extension TG have defined the date for its extra meetings, it will on 10PM GMT+8, Sept 3 (Wednesday) | 7AM PDT, Sept 3 (Wednesday). It will show up at ​RISC-V Technical Meetings. Reach out to ​@Siqi Zhao​ if need be.

• ​Aug 28, 2025ARC Meeting Minutes Published. The ARC continued reviews on CHERI, Supervisor Domains, SPMP, and IOPMP, clarified questions on Zihintitl/Zca and menvcfg behavior, and admitted Zvzip as a fast-track extension candidate.

• ​Aug 28, 2025 ​@Ken Dockser​ reported that the the Governance Committee clarified the meeting attendance conundrum:

  • All scheduled meetings count (unless cancelled ahead of time), even if quorum isn’t reached.

    • If you attend, you get credit.

    • If you don’t attend, it counts against you.

• ​Aug 28, 2025 PTE Reserved-for-Software Bits 60-59 Fast Track ISA,
  PTE Reserved-for-Software Bits 60-59 Fast Track IOMMU and
  Boot and Runtime Services (BRS) were Ratified by the Board of Directors
  

• ​Aug 28, 2025 RVM TG and Instrumentation Trace TG were approved by the Board of Directors.

• ​Aug 27, 2025 Crypto SIG elections concluded: ​@Markku-Juhani Saarinen​ elected Chair, ​@Nicolas Brunie​ elected Vice-Chair.

• ​Aug 26, 2025 Meeting Disclosures in Chinese are now available here.

• ​Aug 26, 2025 RISC-V Tech Journal was created.