Changelog — AeroOS

26R1 (2026-09)

First official Release.

Added

• ✅ RISC-V 64-bit QEMU virt full boot
• ✅ OpenSBI FW_DYNAMIC firmware integration
• ✅ NS16550 UART console
• ✅ Physical page allocator + kmalloc/kfree
• ✅ Timer interrupt (CLINT)
• ✅ Preemptive round-robin scheduler
• ✅ 30-register context frame
• ✅ U-mode tasks + ecall syscall dispatch
• ✅ Aero-language U-mode program support

Known Limitations

• No SMP (single hart)
• No filesystem
• No PMP protection (all memory accessible)
• sys_fork doesn't copy address space
• 4 syscalls only (write/yield/exit/fork)