Providing a Linux API on the Scalable K42 Kernel
K42 is an open-source research kernel targeted for 64bit cache-coherent multiprocessor systems. It was designed to scale up to multiprocessor systems containing hundreds or thousands of processors and to scale down to perform well on 2- to 4-way multiprocessors. K42’s goal was to re-design the core of an operating system, but not an entire application environment. We wanted to use a commonly available interface with a large established code base. Because Linux is open source and widely available, we chose to support its application environment by supporting the Linux API and ABI. There were some interesting complications as well as advantages that arose from K42’s structure because our implementation of the Linux application environment was done primarily in user space, had to interface with K42’s object-oriented technology, and used fine-grained locking. [via]
http://researchweb.watson.ibm.com/K42/papers/...
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