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Testing SMP Kernel Modules with UML (O'Reillynet)

Here's an article on the O'Reilly Network on how to test kernel modules in a multiprocessing environment - even if you do not have an SMP system. "Fortunately there is now a method of simulating a SMP system with a single CPU Linux system. Fantastically, it requires no financial investment. The tool is Jeff Dike's User Mode Linux (UML)."
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