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Friday, July 8, 2011

Linux : Testing SMP Kernel Modules with UML

So you have just written, tested, debugged, and delivered a kernel module to your satisfied customer, who then distributed it to end users. Unfortunately, angry and frantic reports of system lockups, filesystem corruption, and other atrocities soon fill your mailbox. A little detective work quickly reveals that problems manifest themselves only on SMP systems. Perhaps it never even occurred to you that your module would be used on a multiprocessor box, so your testbeds all have single CPUs.

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