April 2026 monthly summary for plos-clan/CoolPotOS focusing on stability and device management improvements. Delivered two critical updates with clear business value: 1) VMA ownership and memory management bug fix: corrected incomplete ownership in VMA name handling to prevent double-release, stabilizing VMA memory management and reducing risk of memory-related crashes. 2) Device number handling and TTY ioctl enhancements: introduced device number macros and refactored TTY ioctl implementations to support new cases and improve error handling, increasing reliability of device management and edge-case resilience.

March 2026 – CoolPotOS performance and stability review: Delivered cross-architecture boot and filesystem improvements, elevated multi-core reliability, and initiated a modular storage/driver stack to improve maintainability and performance. Key outcomes include broad boot support across LoongArch64 and RISCV64 with unified x86_64 AP entries, SquashFS rootfs integration with zstd and a SIMA boot workflow, and rootfs environment replacement for a more robust runtime. Storage and memory areas were modernized via an NVMe driver modularization and heap-to-stack transitions, complemented by memory usage optimizations and per-page reference counting. RISCV64 expansion of system calls, extended file attribute support, and strengthened VFS/pipe internals improved capability and reliability. Numerous bug fixes across DRM, procfs, TTY, and timing subsystems enhanced stability and security in multi-core scenarios. Business value: faster boots, broader hardware coverage, improved reliability, and easier long-term maintenance.

February 2026 (2026-02) — Focused on stabilizing the boot path, expanding system call surface, and hardening memory, concurrency, and scheduling in CoolPotOS. Key improvements include boot/rootfs behavior driven by kernel parameters, signal mechanism and related syscalls, and architecture-aware stability fixes that reduce runtime errors and enable smoother deployments. Also addressed critical edge cases in command line handling, dynamic linking reliability, and process management, contributing to improved system reliability and developer velocity.

January 2026 highlights for CoolPotOS: Delivered high-speed x86 memory operation paths (memset, memcmp, memmove) with a new bcmp kernel interface, introduced kernel KASAN memory sanitization, and advanced the ACPICA stack by replacing UACPI/NeoACPI with ACPICA. This included architecture-wide width consistency fixes on Loongarch64 and PCIe table mappings. Hardened core subsystems by addressing memory leaks and boundary issues in devtmpfs, procfs, and fork/VMA handling, while expanding hardware support with USB HID keyboard/mouse and initramfs rootfs integration. Added compile-time controls to gate KASAN overhead and introduced new syscalls/utilities (sys_kill, umask chmod). These changes collectively improve performance, stability, and cross-architecture portability, reducing production risk.

Month: 2025-12 — Monthly recap for plos-clan/CoolPotOS highlighting core kernel work across graphics, syscall, and reliability. Delivered DRM-based graphics subsystem, enhanced RV64 syscall infrastructure with procfs/CPU exposure, extended system call set (logging, chroot, setitimer), and critical FPU save/restore bug fixes. These contributions improve graphics performance, process isolation, observability, and multitasking stability, directly enabling advanced workloads and safer, more predictable system behavior.

November 2025 (2025-11) highlights: strengthened kernel security, multi-architecture readiness, and foundational data-path improvements. Delivered core feature work including block device IO path rewrite with stack protection and extended VFS (plus a new tty device under devtmpfs) and a temporary RRS scheduling tweak. Implemented security enhancements: kernel signature verification and lstat syscall support, and integrated the TinyCrypt crypto library with an increased kernel stack. Added Zstandard support for decompression and initramfs, enabling zstd-based images. Expanded filesystem and procfs capabilities with procfs/iso9660 support and dynamic procfs improvements for meminfo exposure. Advanced multi-arch readiness through modular build overhaul and RV64 integration, including partial RV64 code, boot protocol decoupling, and clang/elf-gcc readiness with libfdt. Also delivered a suite of stability fixes across VFS, memory safety, and architecture-specific code. Key business impact: improved security, faster secure-boot-enabled deployment, broader hardware support, and more robust, maintainable code with streamlined builds.

October 2025 performance summary for plos-clan/CoolPotOS. This month focused on modularizing the platform binding, expanding cross-architecture support, strengthening core kernel capabilities, and modernizing the build and kernel module infrastructure to accelerate future delivery and reliability. Key features delivered include platform binding decoupling with added network modules, initial riscv64 architecture support, and core improvements such as chroot syscall and process CWD using VFS handles. We also laid the foundation for long-term performance and scalability with CopyOnWriteArrayList for kernel structures, and initiated muqss scheduling groundwork. Build system modernization with CMake and a project structure refactor underpins maintainability and onboarding, complemented by a new kernel module loader interface and symbol export hardening. In parallel, high-impact bug fixes improved device mounting reliability and path handling across sys_mount, and corrected architecture-specific import and USB-related issues. The month closed with a more robust, multi-architecture platform ready for broader hardware support and faster feature delivery.

September 2025 (2025-09) performance-focused and stability-driven iteration for plos-clan/CoolPotOS. Highlights include major kernel, storage, and networking improvements delivering stronger hardware compatibility, reliability, and performance. Key features were delivered with a focus on stability, memory safety, and scalable design, while notable bugs were resolved to reduce system downtime and risk in production deployments.

In August 2025, the team delivered a suite of platform-level improvements across CoolPotOS and related components, prioritizing reliability, hardware compatibility, and performance while laying the groundwork for future EEVDF porting. Notable work spanned scheduler migration, input handling, virtualization/IO reliability, and kernel-module tooling, with documentation enhancements to improve maintainability. Key initiatives included system-wide EEVDF scheduling groundwork and sched_clock timing adjustments; PS/2 scan code translation to remove OS-terminal dependencies and reduce macro warnings; TTY foreground process group support with an assembly-optimized memcpy and related mount/VFS improvements; IOAPIC base address fixes alongside new system calls for cp_meminfo/cp_cpuinfo; and a multicore initialization fix to stabilize EEVDF porting on multi-core systems. The month also covered kernel/module tooling and CI improvements, rootfs isolation and extfs/module work, as well as targeted bug fixes that improved stability and correctness across file I/O, process management, and virtualization scenarios. Additionally, documentation improvements addressed Inline Assembly in C for MdrOS and typo corrections in project overviews, contributing to higher-quality developer experience and onboarding.

July 2025 performance highlights: Delivered foundational kernel/storage enhancements across CoolPotOS and the MdrOS tutorial ecosystem, focusing on reliability, performance, and readiness for fatfs-root operation. Key features delivered include an AHCI driver rewrite with a new vdisk IO path, a kernel version bump with updated documentation, and a FATFS-enabled block devices stack with partition table parsing and bootloader fixes, enabling FATFS-based roots and improved bootstrapping. Critical stability work addressed fork/process management, waitpid handling, and memory safety (fatfs/ISO9660) with multiple bug fixes and system-call/IO enhancements (copy_file_range, pread/pwrite, remap, getuid). Additional improvements targeted VFS/pipe performance, large-page support, idle scheduling, and per-CPU task placement to boost multicore throughput. The combined work results in faster boot/load times, broader hardware compatibility, safer filesystem code, and reduced maintenance overhead through stronger correctness guarantees.

June 2025 monthly summary for the development team (Projects: plos-clan/CoolPotOS and Mdr-C-Tutorial/C). - Key features delivered: - Scheduler and threading enhancements: added suspend mechanism, futex-based synchronization, and initial futex syscall; scheduler policy optimizations with initialization safety and kernel numbering updates. - Memory and VM improvements: introduced virtual allocation to reduce mmap usage, fixed futex opcode handling, lazy allocation enhancements with TTY refresh bug fix, and enabling mprotect syscall across cores. - System call and dynamic linker readiness: added gettid system call with a new tid allocation mechanism; preliminary fork/execve system calls; dynamic linker groundwork; expanded stat/fstat and HOME env support; mkdir and sigsuspend additions; lseek; urandom device and user stack expansion to 1MB. - IO/TTY/VFS enhancements: implemented ioctl interface for the stdio virtual mount device; extended TTY IOCTL types and polling; VFS rename/delete support; mmap-to-vfs_map integration with framebuffer support; initial dynamic linking support for applications. - SMP stability and critical bug fixes: removed scheduler spinlock to prevent CPU entering low-power states; resolved lazy allocator deadlock; fixed fork-related crashes and syscall behavior; addressed nanosleep calculation and related kernel numbering issues; cpuid SMP init bug fix using lapic_id. - Documentation and developer resources: OS development FAQ and Precautions added to help new contributors and reduce common pitfalls. - Major bugs fixed: - Scheduler: removed self-spinlock to improve system stability. - Memory: resolved lazy allocator deadlock and related paging issues; fixed mmap-related problems. - Syscalls and dynamic linking: fixed ioctl operation mappings; corrected fork/execve behaviors; fixed dynamic linker crashes due to unaligned stacks; addressed phdr-related linker issues. - SMP/CPU: corrected cpuid retrieval for SMP, switched to lapic_id; stabilized boot-time and runtime CPU identification. - Overall impact and accomplishments: - Built a more robust foundation for multi-tasking, memory management, and dynamic linking with broader toolchain support. These changes reduce risk of stalls, crashes, and memory leaks, while enabling advanced features such as dynamic linking and improved VFS/TTY capabilities. - Demonstrated strong cross-repo collaboration and alignment on kernel scheduling, memory virtualization, and system call surfaces that deliver business value through more reliable OS development and easier maintenance. - Technologies/skills demonstrated: - Low-level kernel development (scheduling, futex, TLB/page tables, fork/execve), concurrency control and deadlock avoidance, memory virtualization and mmap optimizations, cross-core system call enablement, and dynamic linker integration. - Deep debugging and stability work across SMP, IO, VFS, and frame buffer interfaces; strong focus on developer ergonomics and documentation.

May 2025 (2025-05) monthly summary for plos-clan/CoolPotOS. Focused on stabilizing core kernel runtime, expanding IO and system call surface, and improving developer productivity. Delivered substantial memory management improvements, keyboard input reliability, and broader VFS/syscall capabilities that directly enhance performance, reliability, and user experience.

April 2025 的工作聚焦在提升 CoolPotOS 的稳定性、可观测性以及底层基础设施，为后续功能迭代打下坚实基础。关键交付覆盖面广，从内核稳定性、内存/并发管理到引导加载器与驱动生态均有显著提升，直接提升系统可用性、运维可观测性和扩展能力。

March 2025 Monthly Summary: Kernel, driver, and system-level improvements across CoolPotOS and MdrOS delivered notable gains in multi-core scalability, hardware compatibility, and build robustness. The period focused on enabling fair multi-core scheduling, stabilizing core kernel subsystems, expanding memory management, and preparing cross-architecture support for future releases.

February 2025 monthly summary for plos-clan/CoolPotOS: Delivered foundational kernel subsystems and IO improvements, enabling reliable multi-core operation, improved storage IO via VFS/NVMe, and a migration of build tooling, while fixing critical input and interrupt bugs. These workstreams increase system stability, performance, and maintainability, underpinning planned features in storage, virtualization, and userland tooling.

January 2025 monthly summary: Delivered core kernel readiness and developer tooling improvements across two repositories, focusing on hardware initialization, power management, build stability, CI coverage, and enhanced multitasking capabilities. The work established a robust foundation for a functional kernel, improved energy efficiency, and accelerated development cycles through safer builds and broader CI coverage. Documentation enhancements improved clarity for architecture branches and contributed to a smoother onboarding experience.

December 2024 monthly summary for plos-clan/CoolPotOS: Delivered substantial kernel/build system consolidation, expanded platform capabilities, and hardened core subsystems to improve reliability and maintainability. Key initiative was migrating the MdrOS kernel into CoolPotOS and introducing a centralized xmake.lua build configuration, reducing fragmentation and enabling streamlined builds. Audio subsystem was extended with Intel HD Audio driver support and MP3 playback for basic audio output. System tooling and boot/terminal modernization were advanced through the new f3system utility, improved terminal visuals, and an updated boot configuration referencing the new kernel path. Core stability and memory management were enhanced via ELF loading stability improvements with new ELF utilities and dynamic linking headers, along with memory freeing refinements. Boot/runtime reliability was strengthened with RAM checks in the bootloader, basic threading support, and implemented reboot functionality, coupled with a targeted memory leak fix in process cleanup. Collectively, these efforts improve system resilience, visibility, and developer productivity, providing a stronger foundation for future features and performance improvements.