operating-systems

Operating Systems

linux

windows

mac

Misc

ARM

Jazelle DBX (direct bytecode execution) is an extension that allows some ARM processors to execute Java bytecode in hardware as a third execution state alongside the existing ARM and Thumb modes (16bit instructions)

RISC V

RISC V J
- Instructions intended to accelerate common JIT’d instruction sequences

Hurd

debian/arch/guix variants
- ia32 and x86₆₄ (GNU Binutils 2.40+ and GCC 13+)
- userspace kernel drivers using netbsd rumpkernel

freebsd

pkg for package manager
/etc/rc.conf for services
- zfs_enable="YES"
zfs by default
support for linux emulation
- macos compat fork

illumos

https://news.illumos.am/feed/

smartos
- modern Illumos(OpenSolaris)
- uses zones for control like vms and containers
  - native zones
  - linux emulation
  - kvm/qemu
  - bhyve from freebsd
- uses netbsds pkg
- in memory operating system
OpenIndiana
OmniOs
Tribblix
illumos-gate
- forks for ARM
  - https://github.com/richlowe/illumos-gate
  - supported hardware https://github.com/n-hys/illumos-gate/wiki
- fork for sparc
  - https://github.com/klausz65/illumos-gate
- used by oxide/joyent/etc for kernel, networking and userspace