MerlionOS has reached Ring 3 userspace — 139,905 lines of Rust across 380 modules with 45 POSIX syscalls. The OS now runs user programs in Ring 3 with full process isolation, ELF loading, and per-process page tables.
Version Focus Lines v1-v5 Boot, VGA, serial, GDT/IDT, PIT, keyboard, heap ~3K v6-v10 Multitasking, syscalls, IPC, VFS, ACPI, shell ~7K
Version Focus Lines v11-v15 RTC, framebuffer, PCI, networking (IPv4/UDP), SMP ~15K
Version Focus Lines v16-v20 Modules, virtio, FAT16, ELF, TCP/IP, HTTP ~30K v21-v26 Containers, AI shell, SSH, DNS, MQTT, WebSocket, scripts ~41K
Version Focus Lines v27 Permissions & Security — capabilities, seccomp, audit 42.5K v28 Logging & Audit — structured logs, rotation, remote syslog 43.6K v29 Performance Profiling — alloc tracker, syscall stats 44.2K v30 Stability Hardening — panic recovery, fuzzing framework 44.9K
Version Focus Lines v31-v35 HTTP middleware, SCP, DNS zones, MQTT broker (QoS), WebSocket rooms 46.4K
Version Focus Lines v36 Neural network inference (INT32, no floats) 47.5K v37 ML training — linear regression, decision tree, KNN 48.0K v38 Vector store — semantic search, cosine similarity 48.3K v39 AI workflow engine — task orchestration 48.5K v40 Self-evolution — code analysis, patch generation 48.5K
Version Focus Lines v41 GPU compute — software shaders, benchmarks 49.5K v42 Bluetooth — HCI, L2CAP, device pairing 50.0K v43 Distributed FS — Raft consensus, remote mount 50.5K v44 Real-time scheduling — EDF, Rate Monotonic 50.9K v45 Microkernel mode — service isolation, hot-restart 50.9K
Version Focus Lines v46 Audio engine — mixer, WAV, synthesis, MIDI 52.5K v47 Userspace — process manager, libc, /bin programs 54.0K v48 GUI toolkit — widgets, layout, dialogs, themes 55.5K v49 IPv6 + HTTPS — dual stack, reverse proxy, TLS 56.7K v50 Packages — registry, dependency resolution, build system 57.2K
Version Focus Lines v51 ext4 filesystem — extents, journaling, htree 58.0K v52 TCP congestion (Reno/Cubic/BBR) + WASI runtime 59.3K v53 Container networking — veth pairs, network bridge 60.1K v54 ELF dynamic linker + debug info parser 60.9K v55 Extended crypto — AES-128, RSA, X.509, ChaCha20 61.3K
Version Focus Lines v56 Comprehensive /proc filesystem (28 entries) 62.5K v57 /sys filesystem + device model 63.0K v58 tmpfs + enhanced pipes (named, bidirectional) 63.4K v59 POSIX ACLs — per-user/group access control 64.2K v60 Power management — P/C-states, thermal, battery 65.1K
Version Focus Lines v61-v65 WiFi, HDA audio, UEFI boot (Limine), vim, bash/zsh 72K v66-v70 cgroups, multi-user, service manager, extended tooling 78K v71-v73 aarch64 port (Raspberry Pi 3/4/5) — UART, GPIO, SD card 82K v74-v75 riscv64 port (SiFive/StarFive) — OpenSBI, PLIC, CLINT 84K v76-v77 loongarch64 port (Loongson 3A5000/6000) — UEFI, EIOINTC 85.9K
Milestone: 4-architecture support — x86_64, aarch64, riscv64, loongarch64 all boot in QEMU with shared kernel core and per-arch HAL layers. 253 modules, 85,928 lines of Rust.
Version Focus Lines v78-v82 USB keyboard, multiple NICs, SATA, framebuffer display, font rendering, USB mouse, touchpad, keyboard layouts, USB mass storage, NTFS read-only, auto-mount, ACPI S3 sleep/wake, real CPU frequency scaling, battery readout ~100K
Version Focus Lines v83-v87 Window compositor, desktop environment, GPU-accelerated terminal with Unicode, graphical file manager, network manager, unified system settings ~121K
Phase Focus N1 QUIC transport protocol N2 HTTP/3 over QUIC N3 gRPC framework N4 OSPF routing protocol N5 BGP routing protocol N6 iptables firewall and NAT N7 eBPF packet filtering N8 DPDK-style fast path N9 Network performance testing
Milestone: v87 — 330 modules, 121,157 lines of Rust. Window compositor, desktop environment, full networking stack with QUIC/HTTP/3, gRPC, OSPF/BGP, iptables/NAT, eBPF, and DPDK. 450+ shell commands.
Version Focus Lines v88-v92 HTML/CSS web browser, email client (SMTP/IMAP), music player, enhanced vim + debugger, network package manager ~125K
Version Focus Lines v93-v97 PAM authentication, per-user encryption, OCI container runtime, KVM virtualization (VT-x), NFS client, performance optimization ~129K
Version Focus Lines v98 LLM inference — INT4/INT8 quantized, in-kernel neural network ~130K v99 AI system administration — monitoring, diagnostics, auto-tuning ~131K v100 Self-hosting — Rust subset compiler, x86_64 assembler, ELF linker 132,670
Milestone: v100 — 360 modules, 132,670 lines of Rust. Self-hosting OS with Rust compiler, assembler, and linker. 480+ shell commands. 100 releases.
Focus Details Ring 3 execution User programs run in unprivileged Ring 3 with full process isolation POSIX syscalls 45 system calls: fork, exec, open, read, write, mmap, signal handling, and more ELF loader Load and execute standard ELF binaries in userspace Per-process page tables Each process gets isolated virtual address space Built-in programs 5 user programs including QFC blockchain miner GPU drivers AMD + Intel compute drivers, NVIDIA/Ascend/Cambricon detection
Milestone: U1 — 380 modules, 139,905 lines of Rust. Ring 3 userspace with 45 POSIX syscalls, ELF loader, 5 built-in user programs, and QFC blockchain miner running in userspace.
v10 7,000 lines — boots, shell, multitasking
v20 30,000 lines — networking, graphics, drivers
v30 44,900 lines — security, logging, profiling
v40 48,500 lines — AI platform, self-evolution
v50 57,200 lines — audio, GUI, IPv6, packages
v60 65,074 lines — full OS platform
v70 78,000 lines — multi-user, service manager
v77 85,928 lines — 4-architecture support
v82 ~100,000 lines — real hardware support
v87 121,157 lines — desktop environment, networking roadmap complete
v92 ~125,000 lines — application ecosystem
v97 ~129,000 lines — system maturity, containers, KVM
v100 132,670 lines — SELF-HOSTING! Rust compiler, assembler, linker
U1 139,905 lines — RING 3 USERSPACE! 45 syscalls, ELF loader, 5 user programs
MerlionOS has reached its v100 milestone and Ring 3 userspace. Future work may include:
Expanding userspace with more POSIX syscalls and user programs
Real hardware validation on more machines and all 4 architectures
Community contributions and ecosystem growth
Expanded self-hosting capabilities (more Rust language features)
LoongArch SMP support
System installer for bare-metal deployment
