L4 (Realtime)

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L4 Sites:

SourceForge: L4Ka Microkernel The L4Ka microkernel is an L4 compatible kernel running on many platforms: ARM; MIPS; 68k, PPC; x86. A port of Linux atop an L4Ka microkernel exists. http://sourceforge.net/projects/l4ka/ L4Ka Project L4-based microkernel systems, for embedded systems to huge servers. L4: a tiny, fast, second generation microkernel using hierarchical external pagers and guarded page tables. Goals: create, prove, establish new methodology for systems that helps manage g http://l4ka.org/ L3-L4 Microkernel Family Lean, with fast, message-based, synchronous IPC, simply-used external paging mechanisms, security mechanism based on secure domains: tasks, clans, chiefs. Kernels try to implement only a minimal set of abstractions on which OSs can be built flexibly. L3 h http://os.inf.tu-dresden.de/L4/ Perseus A secure platform for applications that use digital signatures. Based on L4 and Linux. Research project at University of Saarbruecken, Germany. http://www.perseusos.org/ L4 Microkernel L4/MIPS: stable L4 for MIPS R4x00 processor, may be fastest kernel for this architecture. L4/Alpha: begun at Technical University of Dresden, SMP version released. Linux ports: L4/MIPS, L4/Alpha underway. http://www.cse.unsw.EDU.AU/~disy/L4/ The Hurd on L4 Porting the Hurd to the L4 microkernel. News, plans, pointers to mailing lists and websites. http://www.nongnu.org/l4hurd/ Fiasco Preemptible, realtime, 2nd-generation microkernel, fast, maintainable, readable, supports hard priorities, uses non-blocking synchronization for kernel objects to guarantee priority inheritance, ensure runnable high-priority processes never block waiting http://os.inf.tu-dresden.de/fiasco/ SawMill: A Highly-Configurable Operating System Goal: address the complexity of building and maintaining a variety of custom OSs. As embedded and personal systems grow more common, the need to make OSs customized to many device and application needs rises. At IBM T.J. Watson Research Center. http://www.research.ibm.com/sawmill/

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