Silicon reviews, MCU tutorials, OpenWrt guides and ecosystem analysis — written for engineers evaluating RISC-V for production.
100 articles · updated October 24, 2026
Linux 7.3 shipped on 2026-10-18 with a large RISC-V pull: Smcdeleg/Smcntrpmf/Sscsrind/Ssccfg counter delegation, Ssqosid QoS tagging context switch, flush-by-ASID plus Svinval in update_mmu_cache_range, and new support for Canaan K230, Milk-V Duo S (SG2000), SpacemiT K3 I2S/SPI/USB and StarFive JHB100.
Anup Patel's KVM/riscv 7.4 pull adds KVM_PRE_FAULT_MEMORY, exposes Zicclsm/Ziccamoa/Ziccif/Za64rs to guests, and moves IMSIC wakeup to a raw spinlock.
At the 2026 RISC-V Summit China in Shenzhen, SpacemiT and the Xiangshan team launched the V100 server CPU: 46 cores (6 Kunminghu V2R2 + 40 X100), 8-channel DDR5-4800, 52 lanes PCIe 5.0, and full compliance with the RISC-V server specification family. Full spec walkthrough.
Linux Plumbers Conference 2026 measured an auto-vectorized RISC-V Linux kernel: +15.1% LZ4 compression on one target but -7.5% on K3, and a 0.1% geometric mean across K3 system benchmarks. A close reading of the data.
Ubuntu 26.10 adds the first official riscv64 desktop ISO, with SpacemiT K3 Pico-ITX as a supported board. How to install it, run it under QEMU, and what still works.
SpacemiT's Linux 7.4 devicetree pull adds K3 CPU scaling, CTF2301 thermal and fan control, USB, rfkill and ACLINT fixes, plus EEPROM MAC for K1 boards.
A Qualcomm RFC posted on Oct 2 2026 adds a 406-line RISC-V SBI watchdog driver to Linux: SBI 3.0 gating, a 60 s default timeout, and pretimeout notifications delivered as an IMSIC platform MSI.
A v6 14-patch series posted Oct 1 2026 adds gtrace, an architecture-neutral hardware trace framework with the ratified RISC-V E-trace as its first backend: component graph, perf AUX integration, encoder and RAM-sink drivers, plus a QEMU model for testing.
Andrew Jones posted v6 of a 16-patch series adding IMSIC MSI remapping to the RISC-V IOMMU driver, enabling IOMMU_DMA and VFIO PCIe device assignment on 64-bit RISC-V — with two documented limitations.
Roman 'Hedin' Storozhenko posted v2 of a Linux RISC-V patch that adds riscv_tlb:riscv_tlb_flush_path to observe whether the kernel handles TLB invalidation locally, via SBI RFENCE, or through a cross-CPU call.
KVM works on the SpacemiT K3 under Ubuntu 26.10 mainline 7.3.0 — a Debian 13 guest boots with zvk* vector crypto at 2.37 GB/s AES-GCM. A Fedora wiki covers native KVM on the Com260. All three BSDs fail on rdcycle because the K3 firmware leaves mcounteren.CY and IR clear.
Inochi Amaoto submits v7 of the upstream Linux patch series that adds PCIe Root Complex support for the SpacemiT K3 — a Synopsys DesignWare PCIe controller plus IMSIC, multiple PHYs, and shared K1/K3 driver logic.
Xen now boots on the SpacemiT K3 — the only RISC-V board shipping both APLIC/IMSIC and the ratified H-extension. The two-step story from a pre-ratification P550 to a spec-compliant RVA23 board, from the Xen Summit 2026 talk.
The opensolvers team taught OpenBLAS a new RISCV64_ZVL1024B target and ran HPL on the SpacemiT K3's 8 A100 AI cores (VLEN=1024). Results: A100 HPL goes from 15 to 35.9 GFLOP/s, and an equal 8+8 X100+A100 mix reaches 57.5 GFLOP/s — beating the X100-only baseline of 53.2. Full benchmark tables, the /proc/set_ai_thread affinity mechanism, and the VLEN-migration SIGSEGV pitfall, annotated.
Beijing ESWIN Computing (奕斯伟计算) passed the HKEX main board listing hearing on Sep 21, 2026, positioning it to become the first publicly listed RISC-V-architecture chip company. Full financial trajectory from the prospectus coverage: revenue ¥17.52亿 → ¥20.25亿 → ¥24.31亿 (2023–2025), Q1 2026 ¥4.94亿 (+18.4% YoY), compute products jumping from ¥375K to 45% of quarterly revenue in three years, and the risk register behind the 'RISC-V first stock' label.
Canonical's Jon Taylor maps the post-RVA23 RISC-V ISA landscape: Zicfilp/Zicfiss control-flow integrity with shadow stacks and landing pads, the three matrix-extension routes (VME, IME, AME) and their OS context-switch costs, runtime discovery via sys_riscv_hwprobe(), and the RVA23.1 development options that matter for distros — Ssdbltrap, Sscfg, Ssctr. Annotated with official spec links.
The Ovis AI camera module runs a CVITEK CV1842H-P: Arm A53 at 1.1 GHz plus a RISC-V C906 at 800 MHz, 1.5 TOPS INT8 NPU and 1080p AI-ISP.
Khronos published OpenCL 3.1.2 on 18 Sep 2026 finalising command buffers; PoCL 7.2 (4 Sep) claims OpenCL 3.0 conformance on RISC-V CPUs.
CVE-2026-92518: a RISC-V BPF tailcall bug under CONFIG_CFI_CLANG corrupts kernel stack. CVSS 7.8, fixed in 6.18.52 / 7.2.6 / 7.3-rc1.
RISC-V Linux patch v8 (20 Sep 2026) adds Zic64b to cpufeature/hwprobe and an rva23u64 base behaviour, with DT entries for SpacemiT K1, K3 and SG2044.
Suzhou Ruixin's Gaoguang D35 is a mass-produced RISC-V dataflow physical-AI chip: fully self-developed RISC-V CPU core, dedicated LPU dataflow processing unit, 128 GB on-chip VRAM, Chiplet advanced packaging, >90% compute utilization claimed, and an ISCA 2026 best-paper nomination. We annotate the architecture, the memory-wall problem it targets, and the five application scenarios.
A technical annotation of SpacemiT's official K3 preview paper (dated 2026-01-29): the homogeneous-fusion paradigm, X100 RVA23 core microarchitecture (OpenC910 lineage, TAGE, 17-cycle L2 hit), A100 1024-bit vector + IME 1.0/2.0 matrix extensions, Linux SMP scheduling with AI-partitioned cores, and every published benchmark table — SPEC CINT2006 22.88, −5.48% under KVM, GHASH 46.6x, 3.28x memory bandwidth.
EVAS Intelligence's 64-node RISC-V AI supernode — Epoch chips on E200-L liquid-cooled OAM modules in an orthogonal backplane-free fabric — is now deployed in an operator data center in Shijiazhuang, backed by a new ~RMB 2B round at a ~RMB 15B valuation. Verified facts, vendor claims labeled.
Andes AX66 RVA23 application core validated pre-silicon: quad-core cluster on AMD Versal VP1902 FPGA in S2C Prodigy S8-100, booting Linux KVM with two VMs and running TinyStories 42M LLMs before tape-out. Full spec tables and what the demo proves.
Quad-core Andes AX66 (RVA23, 13-stage, 8-wide OoO) on one AMD Versal VP1902 FPGA at 60 MHz boots Linux KVM and runs two TinyStories 42M LLMs at once.
Axelera Europa AIPU ships: 629 TOPS at 45 W, 16 RISC-V vector cores, 128 MB L2, now validated in Dell XE5 and Supermicro 111AD servers.
deepin 25 adds an RVA23 overlay repo (GCC 15/16, Binutils 2.46, Glibc 2.42, LLVM 21/22) for offline 30B LLM inference on the SpacemiT K3.
Infineon says next-gen automotive MCUs go all-in on RISC-V, replacing the split Arm TRAVEO T2G and TriCore AURIX line-up. Ecosystem status, gaps.
RISC-V PQC extension v0.1 enters internal review (11-25 Sep 2026): what vkeccak.vi does, what is in the repo, and why embedded teams should watch.
Alibaba MNN on SpacemiT K3 RISC-V: end-to-end LLM inference optimization using IME2 matrix extension, asymmetric W4B64 quantization, TCM double-buffer pipelining. Benchmarks, build flags and source code references.
Shanghai Cuisi raised a nine-figure RMB angel round after a 28nm RISC-V out-of-order tape-out built on its agentic EDA flow. Next: 6nm.
The RV9000 RISC-V + DSA heterogeneous SoC completed tape-out and bring-up: 4 or 8 general cores plus up to 16 SDPA accelerators, NoC interconnect.
JetKVM Mini swaps a Rockchip Linux SoC for an ESP32-P4X RISC-V MCU: 400 MHz dual-core, 32 MB PSRAM, 1080p30 capture, from $39 in October.
OpenSBI patch v4 adds SpacemiT K3 support: eight X100 and eight A100 harts, 256-bit vs 1024-bit VLEN, booted to a Linux 7.3-rc1 shell.
SiFive and AMD demonstrated AMD ROCm 10.0 running on the BigSky SF-2U870 datacenter development platform at AI Infra Summit 2026: 32 P870-D RISC-V cores as head node, AMD Radeon AI PRO R9700 GPUs driving inference offload, running the Gemma4-E2B LLM. Full hardware spec tables, the ROCm demo stack, and how it compares with NVIDIA's CUDA port.
SiFive and AMD demoed ROCm 10.0 on the 32-core P870-D BigSky SF-2U870 RISC-V server, running Gemma4-E2B with Radeon AI PRO R9700 offload.
Infineon's Hot Chips 2026 automotive RISC-V architecture talk: zonal E/E architecture transition, MCU island + MPU island heterogeneous zone controllers, RVI AUTO-SIG profiles (RV32E+I+M+U baseline), RVM virtualization for mixed criticality, and the three-architecture AURIX portfolio (TriCore + Arm + RISC-V).
Aheesa's RISC-V broadband SoC VIHAAN-I goes from first-pass silicon to an Optilink packaging MoU, targeting commercial deployment in early 2027.
Voyager 1.8 replaces GNU newlib with LLVM 20 on Axelera's RISC-V toolchain: wheel drops ~200 MiB to ~20 MiB, up to ~10% faster small-model inference.
EU CRA Article 14 reporting obligations live Sept 11 2026. 24-hour vulnerability reporting clock, ENISA Single Reporting Platform, €15M / 2.5% global turnover penalty tier, SBOM and CE marking by Dec 11 2027. Scope across all RISC-V MCU, SoC and IoT products shipping into the EU.
Fedora's RISC-V group reports GCC ICEs on SpacemiT K1/K3 boards linked to new glibc vector optimisations, while the F45 rebuild stays on track.
DAMO XuanTie's edge AI solution pairs a RISC-V scheduling core with a 512/1024/4096-bit Titan vector engine, 66 vector instructions and 177 operators.
Nuclei Technology files for BSE IPO. Global first RISC-V CPU IP certified to ISO 26262 ASIL-D. NA900 automotive IP, UX1030H RVA23 high-performance core, 300+ customers, 87% gross margin, 4.85B cash.
A snapshot of Rust's RISC-V platform support as of September 2026: which targets are stable, which is new, and why the Tier 1 RFC is still open. Practical build instructions and toolchain notes for production Rust on RISC-V hardware.
RISC-V server silicon moves from lab to production racks. Deep dive into BlueChip LX500, SpacemiT K3, and StarFive JH-B100 — the three chips that target the data center.
Allwinner's F101 SoC — one 1.008 GHz T-Head C907 RISC-V core, 8–16MB SiP PSRAM — runs mainline Linux 7.2 and Zephyr on a 51×21 mm Pico-sized board.
TU/e's EU-funded CONVOLVE project taped out Chimera: RISC-V cores plus memory-centric and neuromorphic accelerators, validated on fabricated silicon.
Mouser stocks Espressif's ESP32-P4X-EYE: a camera-shaped kit on the dual-core 400 MHz RISC-V ESP32-P4 with up to 32MB PSRAM and H.264.
Hangzhou NanoCore closed a ¥1B C1 round for 3D-CIM AI inference silicon combining DRAM near-memory, SRAM CIM and RISC-V. TOPS and node undisclosed.
Nuvoton's NPCR1 OpenTitan RISC-V secure MCU is simulatable in Antmicro's Renode, targeting FIPS 140-3 Level 1 and Common Criteria PP0084.
Waveshare's ESP32-C5 Pico puts Espressif's 240 MHz RISC-V Wi-Fi 6 + 802.15.4 SoC on a Pico board. Specs, variants, pricing and toolchain.
SemiFive starts mass production of HyperAccel's Bertha LLM inference chip on Samsung 4nm. Die area, schedule, contract terms, and the unconfirmed ISA.
RISC-V International's Board of Directors approved the SJTU IPADS-led SPMP extension on Aug 31, 2026 — the first ISA extension defined end-to-end by a Chinese team in RISC-V's 11-year history. Deep dive on Supervisor Physical Memory Protection: motivation, encoding, hardware model, deployment on XiangShan and Nuclei.
Andes used ChipAgents' agentic AI on a RISC-V LSU customization and a BIU verification flow. The reported numbers, and the caveats.
SemiWiki's 2025 design IP tally: $9.45B market, CPU IP 43% share, royalties up 16.1% versus licensing up 10.7%. Where RISC-V's opening sits.
Zhongke Haoxin closed a Series B for its Haawking HX2000 RISC-V DSP line. Verified facts, segment context, and the specs still missing.
IME, VME and AME are RISC-V's three matrix tracks. What each does, where they stand, and the VME freeze and ratification dates for 2026.
YiXing Intelligence closed a ¥1.5B Series B led by Beijing state funds to mass-produce the Epoch RISC-V cloud AI chip. Verified facts and open gaps.
CPython now officially supports RISC-V as a PEP 11 Tier 3 platform. RISE Project provides buildbots, PyTorch wheels land on riscv64. Technical deep dive on what Tier 3 means, the roadmap to Tier 2, and the ecosystem gap.
Two automotive RISC-V control-chip specs move in parallel: Quintauris RT-Europa and a China SAE standard covering lockstep, ASIL-D and HSM.
ESWIN's EIC7700 board powered the HICOOL 2026 RISC-V+AI final. Here are the verified SoC specs — and why two different TOPS figures are circulating.
SpacemiT August 2026 upstream report: K3 display, UFS and PCIe patches in review, Triton merged into FlagTree, glibc 2.44 and GDB 17.2.
SpacemiT K1 achieves ~80ms/token int4 LLM inference with ONNX Runtime by leveraging the X60 core's IME matrix extension. Technical deep dive on MatMulNBits, quantization, and performance tuning.
Lingxu Smart P100 is China's first server-class dynamic SMT4 RISC-V CPU core, engineered for the agentic-AI era. Deep dive into SMT1->SMT4 dynamic switching, 20-stage OoO pipeline, 8-decode/10-issue, TAGE branch prediction, SPEC CPU2006, hardware RAS auto-recovery, test chip tape-out Aug 2026.
Axelera AI's Europa pairs eight 2nd-gen AI PUs with 16 RISC-V vector cores: 629 TOPS at 45 W, 128 MB L2 SRAM, on Samsung Foundry FinFET.
DeepComputing's DC-ROMA RISC-V Mainboard III enters production on SpacemiT K3 with 60 TOPS, claiming the first RVA23 laptop mainboard.
Micro Magic's MagicV 64-bit RISC-V cores claim 5 GHz and 13,000 CoreMarks, 200 mW per core, with Linux, Zephyr and FreeRTOS support.
openKylin 3.0 moves to Linux 7.0 with GCC 15, glibc 2.42 and LLVM 22, adds RVA23, and reports 2-5x FP32, up to 36.5x FP16 RVV gains.
Qualcomm's Q-2390 and IQ-2390 pair a quad-core Kryo CPU and Adreno 704 GPU with a real-time RISC-V MCU, running Linux, Android and Zephyr.
Deep dive into the XCENA MX1 computational-memory device: 3,072 RISC-V cores, Samsung 4nm, 2TB DDR5, CXL 3.2, vector search and near-data processing. Hot Chips 2026 analysis.
GigaDevice GD32VW553 is a Nuclei N307 32-bit RISC-V wireless MCU with integrated 2.4 GHz Wi-Fi 6 (802.11ax OFDMA + MU-MIMO) and Bluetooth LE 5.2 radio, 4 MB Flash, 320 KB SRAM, hardware AES/DES/Hash/PKCAU/TRNG, Matter-over-Wi-Fi certified. QFN32/QFN40, -40 to 105 °C.
GigaDevice CCRC4XXX automotive AI MCU pairs CRV6 RISC-V cores with native post-quantum crypto (PQC), on-chip NPU, and Evita-Full HSM. Full spec deep-dive plus China's first RISC-V vehicle-control-chip standard from the Suzhou Automotive Summit.
Zhongda Tech's SpacemiT K3-based industrial edge AI module delivers 60 TOPS in a Mini COM-E form factor. 8 X100 cores, 8 A100 AI cores, 30B LLM inference, -40 to 70°C, all-domestic supply chain.
SiFive BigSky SF-2U870 is the world's first enterprise-grade rackable 2U RISC-V server. Deep dive into P870-D cores, DDR5-5600, PCIe Gen5, NVMe, and CUDA/NVLink Fusion support.
WCH's CH32X035 is the first QingKe RV32IMAC MCU with integrated USB 2.0 + USB PD + Type-C PHY, PIOC programmable I/O controller, dual OPA, triple CMP, 12-bit ADC and 65 KB Flash — collapsing any external PD trigger chip.
Andes RVBuilder brings RISC-V toolchain management, debugging and MCP-based AI assistance into Visual Studio Code. Cross-platform for Windows and Linux.
Technical deep dive into Timesintelli PT153S, a fully-domesticated RISC-V (RV32IMAC) USB 3.2 Gen1 to Gigabit Ethernet controller chip that shipped over 1M units in three months.
Technical deep dive into HPMicro HPM53M1, a 480MHz RISC-V MCU with integrated 150V motor drivers, 4x CAN-FD, and 2MSPS ADC designed for robot joint servo control.
Technical overview of SpacemiT K3 Pico-ITX, a 2.5-inch Pico-ITX plus SBC built around the 60 TOPS RVA23 K3 AI CPU with 10GbE, NVMe, and dual M.2 expansion.
Technical deep dive into SpacemiT K3, the world's first RVA23 mass-production RISC-V AI CPU: X100 cores, A100 AI engines, 60 TOPS, and four claimed world-first features.
Deep dive into the myCobot 280 RISC-V, the world's first 6-axis collaborative robot arm powered by the SpacemiT K1 RISC-V AI CPU with full-stack open-source design.
Deep dive into XiangShan Kunming Lake open-source RISC-V processor and the Ruyi native operating system for RISC-V.
Deep dive into the 金刚GC3 chip by 中科通量: 12 RISC-V cores, 200 TOPS INT8, 128GB LPDDR5 ECC unified memory, dataflow architecture designed for video generation and understanding.
Canonical outlines Ubuntu's enterprise RISC-V strategy at Hot Chips 2026: RVA23 baseline, 95% package parity, native builders, Kubernetes/MicroCloud porting, and RISE Project collaboration.
Deep dive into Epic Semi Contrail AIX: 32 server-class RISC-V scalar cores + 16 integrated AI cores, up to 75 TOPS (INT8), RVA23, RVV 1.0 + VME, DDR5-6400, PCIe Gen5, CXL 2.0, hypervisor + AIA 1.0. Built for the Agentic AI Era.
GlobalFoundries-owned MIPS unveils three workload-native RISC-V platforms for physical AI: Acies for edge inference, Actus for real-time control, Aegis for safety-critical systems. Software-first design with class-leading tokens-per-watt.
At Hot Chips 2026, NVIDIA laid out concrete requirements for RISC-V host CPUs to join its CUDA and NVLink Fusion stacks. RVA23, Boot & Runtime Services, ACPI 6.6, PCIe coherence, and peer-to-peer are mandatory. SiFive named as first RISC-V NVLink Fusion CPU partner.
Suzhou Ruixin launches High-Beam D35, the world's first mass-produced RISC-V dataflow architecture physical AI chip. 128 GB memory, self-developed RISC-V CPU core recognized by Intel, ISCA 2026 best paper nominee. Technical deep dive on dataflow computing, physical AI applications, and ecosystem strategy.
Reading about RISC-V is one thing — shipping it is another. MeToclaw builds production-ready industrial and IoT hardware; BESTOM provides custom ODM design and volume manufacturing.