RISE TSC Meeting Notes

Jul 24, 2025

Deep Dive Simulator Emulator- Daniel Barboza

• Completed projects:

  • SE_01_017 - QEMU ACPI SPCR Support for RISC-V

  • SE_01_021 - QEMU RVA23 profile support

  • SE_01_023 - QEMU RISC-V IOMMU Enhancements

    • Available in QEMU 10.0 (released April 2025)

  • SE_02_004 (RP005 - RVV Performance Enhancements)

    • Link to last report 

    • Available in QEMU 10.1 (ETA August 2025)

• Items under review in the QEMU mailing list:

  • SE_01_003 - WorldGuard support

  • SE_01_004 - IOPMP support

  • SE_01_005 - PCIe passthru on x86 hosts

  • SE_01_018 - ACPI PPTT support for RISC-V

• SE_01_022 - RISC-V Server SoC Reference Board

  • Dependency on not yet implemented 'sdext' extension

• Not yet sent for review

  • SE_01_029 - P Extension support

  • E-trace items (SE_01_024, SE_01_025, SE_01_026, SE_01_027)

  • SE_01_028 - ACPI support for IOMMU

System Libraries Deep Dive

• Overview

  • SL_00_006 mbedTLS by Rick Chen (Andes)

  • SL_01_008  libjpeg-turbo by Filip Wasil (Samsung)

  • SL_00_006 DPDK by SunYuechi (ISCAS)

SL_00_006 : mbedTLS

• Both RV64 and RV32 Scalar Crypto work is done

  • People are welcomed to review at its RISE repo.

SL_01_008 : libjpeg-turbo

• Thanks for Filip from Samsung, there is an ongoing MR in RISE GitLab repo. 

• https://gitlab.com/riseproject/libjpeg-turbo/-/merge_requests/2

SL_00_006 DPDK

• Sun YueChi from ISCAS’s ongoing work is overlapping with our RFP’s goal around 60~80%.

• The list of ongoing RTE optimization is pretty much the same. (Red, crossed-out ones).

Motion : Withdraw this RFP and let ISCAS take over.

Jul 17, 2025

Deep Dive Distro Integration - Brian Harrington

• Linux Releases of Note

  • Ubuntu 25.04 (RVA20)

  • Red Hat Enterprise Linux 10 (RVA20)

  • Fedora 42 (RVA20)

  • openSUSE Tumbleweed (RVA20)

• Debian Trixie (RVA20) was (unofficially) to be released in June, (this is critical to subsequent work on Kubernetes)

  • Currently in “hard freeze” stage, 

  • https://release.debian.org/trixie/freeze_policy.html

• Upcoming release details

  • Ubuntu 25.10 (RVA23)

Deep Dive Deep Dive Compilers and Toolchains - Petr Penzin

“Mid year” update.

Complete:

• CT_00_051 -- Zicond with if-conversion improvements

• CT_00_049 -- New instruction fusions

• CT_00_047 -- Improve Scalar code generation for cactuBSSN

• CT_00_050 -- Improve x264 vectorization

• CT_00_026 -- Vectorize lbm benchmark from spec2017

• CT_00_022 -- Vectorize bwaves from spec2017

• CT_00_058 -- Exploit .vx and .vf vector forms

• CT_01_018 - Fixed length vector calling convention (LLVM)

Deep Dive Deep Dive Compilers and Toolchains - Petr Penzin

“Mid year” update.

WIP updates:

• CT_01_015 - OpenMP

• CT_01_008 - Autovectorization -- Improvements (LLVM)

• CT_01_012 - Improve shrink-wrapping (LLVM)

Dropped:

• CT_00_014 -- Improve performance of NAB benchmark in spec2017

Jun 26, 2025

Kernel and Virtualization Working Group Deepdive
Linux-6.16 MW updates - I

• Linux-6.16-rc1 was released on 8th June 2025

• Noteworthy stuff merged for Linux-6.16:

  • Linux RISC-V

    • Improved ftrace support

      • Atomic Code patching

      • Avoid stop_machine so that ftrace with preemption enabled

    • SBI v3.0 support starting to land

      • FWFT in kernel, KVM support targeted for next release.

    • HWPROBE support for: Zabha, Vendor extensions (SiFive)

    • ISA extension support: Svinval, Zicbop, Vendor extension (SiFive)

      • Svinval improves the flush performance by ~2x (64 entries)

    • Misaligned access support improvement

Linux-6.16 MW updates - II

• KVM RISC-V

  • Kselftest improvements

  • vcpu reset improvements

• RISC-V SoC

  • Sophog SG2044/2042

    • Syscon driver, DT 

  • SpacemiT

    • DT changes (GPIO, clock)

  • T-HEAD

    • TH1520 SoC clock

  • SiFive Eswin EIC7700 SoC

    • Cache controller driver

  • Starfive

    • Enabling the usb3 port on the framework laptop mainboard

2025: Project updates

• 2025: Recent projects ready for upstreaming

  • LK_01_008 - ACPI RISC-V IOMMU table (RIMT) support

  • LK_01_046 - RPMI Clock driver using SBI MPXY

  • LK_01_053 - System MSI driver using RPMI/SBI MPXY

  • LK_01_009  - Supervisor Software Events (SSE)

  • LK_01_053 - control-flow integrity (CFI) for usermode

• 2025: Recently upstreamed projects

  • LK_01_044 - Firmware Feature support

• 2025: Development status (06-26-2025, wiki)

• TBD - 1 (11.11%), ONGOING - 5 (55.55%), COMPLETED - 3 (33.33%), TOTAL - 9

• 2025: Upstreaming status (06-26-2025, wiki)

• TBD - 4 (44.44%), ONGOING - 5 (55.55%), COMPLETED - 0 (0%), TOTAL - 9

RVA23 profile: Discovery updates

• HWPROBE additions in Linux-6.16

  • Zabha, SiFive (Xsfqmaccdod, Xsfqmaccqoq, Xsfvfnrclipxfqf,Xsfvfwmaccqqq)

• KVM ONE_REG additions in Linux-6.16

• No updates

• Kernel HWPROBE (06-26-2025, wiki)

  • TBD - 2 (3.1%), NA - 40 (42.55%), COMPLETED - 52 (54.25%), TOTAL - 94

• KVM ONE_REG (06-26-2025, wiki)

  • TBD - 23 (24.47%), NA - 13 (13.83%), COMPLETED - 58 (61.70%), TOTAL - 94

Language Runtimes Working Group Deep Dive

Deep Dive Language Runtimes (1) - Mark Ryan

• RISE is actively contributing to Golang, OpenJDK, wheel_builder and V8

• Meetings

  • Monthly RISE Golang and OpenJDK meetings

  • Fortnightly wheel_builder meetings

  • Kick off V8 meeting

• Blogs by RISE members

  • Easy Installation of Binary Python Packages on riscv64 Devices

  • Advancing Go on RISC-V: Progress Through the RISE Project

• Talks by RISE members and contractors

  • Towards seamless Python package installation on riscv64 (FOSDEM Feb 2025)

  • Challenge Accepted: Python Packaging Infrastructure for the RISCV64 Ecosystem (RISC-V Summit Europe May 2025)

  • Golang on RISC-V: The Status and The Future Pengcheng Wang (RISC-V Summit China July 2025)

  • V8 for RISC-V  One-Year Progress : What’s New Yahan Lu (RISC-V Summit China July 2025)

Deep Dive Language Runtimes (2) - Mark Ryan

• Golang

  • Code freeze May 2025

  • Go 1.25 expected August 2025 (plugins,hwprobe,V support in assembler, bitmanip optimisations)

• Python (RISE’s wheel_builder project)

  • 61 binary packages now available including all torch and vllm CPU dependencies (apart from numba)

• OpenJDK 25

  • Release planned for September 2025

  • Improved intrinsic and extension Support for Zfa, Zfh, Zfhmin, Zicond, Zvkn

  • Improved peephole optimizations, string comparison, bitwise operations

  • Improved tests and bug fixes + code cleanup and refactoring

• V8

  • Support rv32 and rv64

  • Has some support for bitmanip and vector

  • Tests pass

  • 2nd tier port, no native builders, issues running some benchmarks

Firmware WG Deep Dive

• Current List of all firmware projects and latest status

• 2025 Project Status update

  • EDK2_00_15 - StandaloneMmPkg RPMI MM support

    • Significant updates after initial POC from Intel.

    • Newly proposed req-fwd interface implementation is WIP. There is a POC WIP.

  • SBI_00_02 - Firmware-first RAS handling Support

    • Most of the implementation is in place. Upstreaming should start soon

    • Edk2: https://github.com/ventanamicro/edk2/commits/dev-upstream/ OpenSBI: https://github.com/ventanamicro/opensbi/tree/dev-upstream Qemu: https://github.com/ventanamicro/qemu/tree/dev-upstream Linux: https://github.com/ventanamicro/linux/tree/dev-upstream  

  • EDK2_00_18 - RISC-V QEMU Server Reference Platform: Moved to RISE simulation team

  • EDK2_00_10 - UefiPayloadPkg For RISC-V

    • Upstreaming complete and UPL now supports RISC-V!

• Opens/Challenges

  • Many proposed projects right now. Need to find more contributors. Can we open it for outside open source community (like students)

  • Find third party vendors who are willing to take up projects like IOMMU 

Jun 19, 2025

Deep Dive System Libraries- Ruinland Chuan-Tzu Tsai 

• On-going tasks:

  • RFP : DPDK

    • Current discussion bottleneck : RTE functions might have duplicated work in the wild. (OSPP event Gitee)

  • SL_01_008 libjpeg-turbo 

    • Dispute with upstream. Currently Nathan created a RISE gitlab repo to host code. Filip has sent out the MR for review.

  • SL_00_006 mbes-tls : Scalar Crypto optimization for AES part is completed. Will move on to other functions.

  • SL_01_003 FFMpeg  : Almost done, currently under validation.

May 29, 2025

Security Software WG Deep-Dive: Robin Randhawa

Timeline of Events (or the story thus far)

• This is a relatively new Working Group

  • Justification for the WG first pitched to the RISE TSC in June 2024

  • Generally unanimous support

  • Working Group created in August 2024

  • First WG Kick-off meeting in September 2024

  • Monthly meets since then

• The story arc that has evolved since the WG’s inception

  • Initially: “Security is broad: What is it that we want to do ?”

  • Then: “Let’s look at all the security specific RVIA specs that are frozen/ratified”

  • Then: “Let’s focus on security for embedded first! No! Datacenter/enterprise first!”

  • Then: “Let’s find a common feature subset between embedded and the rest”

  • Then: “Let’s focus on embedded first but choose work that enables the rest too”

  • Finally: “Here’s a break-down of the work we need to do first, let’s talk”

Security Software WG Deep-Dive

Next Steps

• Complete OP-TEE/OpenSBI work definitions

  • Get reviews done by key stakeholders (Firmware/SecSW WGs)

  • Post review - translate to RISE WG work packages

  • Nominate work package owners

  • Produce RFPs for suitable work to rope in contractors

• Bring in focus beyond embedded

  • Undergo a similar consensus driven work identification exercise

    • Areas

      • CoVE enablement

        • Qemu, OpenSBI, CoVE RDSM

  • Build work package definitions, get them reviewed

  • Nominate owners, produce RFPs

What has worked well

• Good, gradual convergence of opinions towards common goals

• Good cross WG collaboration!

  • Credits

    • Anup Patel (VentanaMicro)

    • Sunil VL (VentanaMicro)

    • Tim Ouyang (AndesTech)

    • Alvin Chang (AndesTech)

    • Ravi Sahita (Rivos)

    • Peter Lin (SiFive)

What has not worked well

• Everyone is busy!

  • Hard to get timely responses generally speaking

  • Need to constantly push and prod folks…

• More mailing list interactions needed

  • General tendency to leave discussions until WG monthly meets

  • Will try hard to change this!

• More enthusiasm needed!

  • Not enough folks attending monthly WG meets

  • Security is a generally dry topic, yes, but it is super important!!!

RISE Developer Infrastructure Update

Developer Infrastructure WG Introduction

• Charter

  • The Developer Infrastructure WG focuses on software and services to support open-source RISC-V developers - both RISE members and the broader open-source community.

• Co-chairs

  • Barna Ibrahim (Rivos)

  • Paul Walmsley (SiFive)

• TSC Chair Contact

  • Nathan Egge (Google)

Developer Infrastructure WG Vision

• Three mutually-supporting projects

  • RISE Build Farm (Active)

  • RISE Board Farm (Active)

  • RISE Developer Tooling (Active)

• Goal

  • Provide robust development infrastructure and tools to RISC-V developers

RISE Build Farm: Introduction

• Objective

  • Cross-build and test (in simulation) RISC-V ports of key open source software

• Running in Hetzner Cloud

• Björn Töpel (Rivos) coordinating

• Brian “Redbeard” Harrington (Red Hat): co-admin

• Status

  • Eight active projects 

    • ~22 active large VM instances on Hetzner Cloud

    • Mostly acting as Github Runner performing cross-compilation/qemu-system-riscv{32,64} tests

Build Farm: Value

• Thousands of builds, and millions of tests per month on key, foundational RISC-V open source projects

  • GCC, LLVM, Linux kernel, GLIBC, Python

• > 150 toolchain bugs found via our fuzzer instances

Build Farm: 2025Q2 Status (1 of 2)

• Eight existing projects running

  • RISE GCC pre-commit CI (Patrick O'Neill, Edwin Lu)

  • RISE GCC post-commit CI (Patrick O'Neill, Edwin Lu)

  • RISE GCC fuzzer CI (Patrick O'Neill, Edwin Lu)

  • RISE GCC microcontroller CI (Patrick O'Neill, Edwin Lu)

  • RISE GLIBC pre-commit CI (Patrick O'Neill, Edwin Lu)

  • RISE LLVM fuzzer CI (Patrick O'Neill, Edwin Lu)

  • RISE Linux Kernel CI (Björn Töpel)

  • RISE Python Wheels (Mark Ryan)

Build Farm: 2025Q2 Status (2 of 2)

• Hetzner-based servers running smoothly

• New server utilization dashboard added

  • Thanks to Brian “Redbeard” Harrington / Red Hat

  • Indicates server CPU utilization over time

  • We have some potential scope to improve efficiency

    • Will be reviewing this in the WG over the rest of 2025Q2 and 2025Q3

RISE Board Farm: Overview

• Objectives

  • Provide a range of Linux-capable RISC-V boards to run functionality and performance tests on CI-generated code

  • Investigate feasibility of providing developer access to boards

• Now that the build farm is stable, much of our focus has shifted to board farm planning

RISE Board Farm: Status

• Significant planning work has been done in 2025Q2

  • We have a high level proposal that has been discussed with the WG and that has been previously presented to the board

    • More Board Farm Proposal Details

    • Board Farm Policy Considerations

  • Prepared a draft budget request for the 2025 stub year, and presented to the budget committee

    • However, since RISE practices dynamic budget allocation, and the project is not yet ready for formal approval, no actions were taken by the committee

RISE Board Farm: Call to Action

• Looking for more interest and engagement from RISE board members

  • We set up a WG meeting for questions from the board, but needs more participation

    • Thanks to the board member who did attend!

• Looking for help from RISE board members