Add the release notes for version 0.16.0
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Tate, Hongliang Tian
Tate, Hongliang Tian
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# Version 0.16.0 (2025-08-04)
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This release introduces initial support for the **LoongArch CPU architecture**, a major milestone for the project. Version 0.16.0 also significantly expands our Linux ABI compatibility with the addition of **nine new system calls** such as `memfd_create` and `pidfd_open`.
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Key enhancements include expanded functionality for **UNIX sockets (file descriptor passing and the `SOCK_SEQPACKET` socket type)**, partial support for **netlink sockets of the `NETLINK_KOBJECT_UEVENT` type**, the initial implementation of **CgroupFS**, and a major testing improvement with the integration of system call tests from the **Linux Test Project (LTP)**. We've also adopted **[Nix](https://nix.dev/manual/nix/2.28/introduction)** for building the initramfs, streamlining our cross-compilation and testing workflow.
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## Asterinas Kernel
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We have made the following key changes to the Asterinas kernel:
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* New system calls or features:
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* Memory:
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* [Add the `mremap` system call](https://github.com/asterinas/asterinas/pull/2162)
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* [Add the `msync` system call based on an inefficient implementation](https://github.com/asterinas/asterinas/pull/2154)
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* [Add the `memfd_create` system call](https://github.com/asterinas/asterinas/pull/2149)
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* Processes and IPC:
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* [Add the `pidfd_open` system call along with the `CLONE_PIDFD` flag](https://github.com/asterinas/asterinas/pull/2151)
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* File systems and I/O in general:
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* [Add the `close_range` system call](https://github.com/asterinas/asterinas/pull/2128)
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* [Add the `fadvise64` system call (dummy implementation)](https://github.com/asterinas/asterinas/pull/2125)
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* [Add the `ioprio_get` and `ioprio_set` system calls (dummy implementation)](https://github.com/asterinas/asterinas/pull/2126)
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* [Add the `epoll_pwait2` system call](https://github.com/asterinas/asterinas/pull/2123)
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* Enhanced system calls or features:
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* Processes:
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* [Add `FUTEX_WAKE_OP` support for the `futex` system call](https://github.com/asterinas/asterinas/pull/2146)
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* [Add `WSTOPPED` and `WCONTINUED` support to the `wait4` and `waitpid` system calls](https://github.com/asterinas/asterinas/pull/2166)
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* [Add more fields in `/proc/*/stat` and `/proc/*/status`](https://github.com/asterinas/asterinas/pull/2215)
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* File systems and I/O in general:
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* [Add a few more features for the `statx` system call](https://github.com/asterinas/asterinas/pull/2127)
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* [Fix partial writes and reads in writev and readv](https://github.com/asterinas/asterinas/pull/2230)
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* [Introduce `FsType` and `FsRegistry`](https://github.com/asterinas/asterinas/pull/2267)
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* Sockets and network:
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* [Enable UNIX sockets to send and receive file descriptors](https://github.com/asterinas/asterinas/pull/2176)
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* [Support `SO_PASSCRED` & `SCM_CREDENTIALS` & `SOCK_SEQPACKET` for UNIX sockets](https://github.com/asterinas/asterinas/pull/2268)
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* [Add `NETLINK_KOBJECT_UEVENT` support for netlink sockets (a partial implementation)](https://github.com/asterinas/asterinas/pull/2109)
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* [Support some missing socket options for UNIX stream sockets](https://github.com/asterinas/asterinas/pull/2192)
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* [Truncate netlink messages when the user-space buffer is full](https://github.com/asterinas/asterinas/pull/2155)
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* [Fix the networking address reusing behavior (`SO_REUSEADDR`)](https://github.com/asterinas/asterinas/pull/2277)
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* Security:
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* [Add basic cgroupfs implementation](https://github.com/asterinas/asterinas/pull/2121)
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* New device support:
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* [Add basic i8042 keyboard support](https://github.com/asterinas/asterinas/pull/2054)
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* Enhanced device support:
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* TTY
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* [Refactor the TTY abstraction to support multiple I/O devices correctly](https://github.com/asterinas/asterinas/pull/2108)
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* [Enhance the framebuffer console to support ANSI escape sequences](https://github.com/asterinas/asterinas/pull/2210)
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* Test infrastructure:
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* [Introduce the system call tests from LTP](https://github.com/asterinas/asterinas/pull/2053)
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* [Use Nix to build initramfs](https://github.com/asterinas/asterinas/pull/2101)
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## OSTD & OSDK
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We have made the following key changes to OSTD:
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* CPU architectures:
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* x86-64:
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* [Refactor floating-point context management in context switching and signal handling](https://github.com/asterinas/asterinas/pull/2219)
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* [Use iret instead of sysret if the context is not clean](https://github.com/asterinas/asterinas/pull/2271)
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* [Don't treat APIC IDs as CPU IDs](https://github.com/asterinas/asterinas/pull/2091)
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* [Fix some CPUID problems and add support for AMD CPUs](https://github.com/asterinas/asterinas/pull/2273)
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* RISC-V:
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* [Add RISC-V timer support](https://github.com/asterinas/asterinas/pull/2044)
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* [Parse device tree for RISC-V ISA extensions](https://github.com/asterinas/asterinas/pull/2113)
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* LoongArch:
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* [Add the initial LoongArch support](https://github.com/asterinas/asterinas/pull/2260)
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* CPU:
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* [Add support for dynamically-allocated CPU-local objects](https://github.com/asterinas/asterinas/pull/2036)
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* [Require `T: Send` for `CpuLocal<T, S>`](https://github.com/asterinas/asterinas/pull/2171)
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* Memory management:
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* [Adopt a two-phase locking scheme for page tables](https://github.com/asterinas/asterinas/pull/1948)
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* Trap handling:
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* [Create `IrqChip` abstraction](https://github.com/asterinas/asterinas/pull/2107)
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* Task and scheduling:
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* [Rewrite the Rust doc of OSTD's scheduling module](https://github.com/asterinas/asterinas/pull/2284)
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* [Fix the race between enabling IRQs and halting CPU](https://github.com/asterinas/asterinas/pull/2052)
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* Test infrastructure:
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* [Add CI to check documentation and publish API documentation to a self-host website](https://github.com/asterinas/asterinas/pull/2218)
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We have made the following key changes to OSDK:
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* [Add OSDK's code coverage feature](https://github.com/asterinas/asterinas/pull/2203)
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* [Support `cargo osdk test` for RISC-V](https://github.com/asterinas/asterinas/pull/2168)
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# Before 0.16.0
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Release notes were not kept for versions prior to 0.16.0.
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