In this and next release, I'm working on improving APIs and internal designs by introducing many breaking changes.

• Reorganized system calls into: exec, ipc, listen, map, print, and kdebug.
• Removed kernel heap for separation of mechanism and policy. Task data structures are now statically allocated in the kernel's .data section, and page table structures are now allocated from the userland (through kpage parameter in map system call).
• Started implementing Rust support. Currently, there's only a "Hello World" sample app. I'll add Rust APIs once the C API gets stabilized (hopefully September).
• shell: Add log command to print the kernel log.
• Many bug fixes and other improvements.

How to Try

Download the attached iso file and run it on QEMU with the following options. This build runs a web server at localhost:1234.

qemu-system-x86_64 \
    -serial mon:stdio -cpu IvyBridge,rdtscp \
    -netdev user,id=net0,hostfwd=tcp:127.0.0.1:1234-:80 \
    -device e1000,netdev=net0,mac=52:54:00:12:34:56 \
    -cdrom resea.iso