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Philipp Oppermann
2019-03-14 12:58:10 +01:00
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blog/content/second-edition/posts/07-double-faults/index.md
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path = "double-fault-exceptions"
date = 2018-06-18
template = "second-edition/page.html"
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This post explores the double fault exception in detail, which occurs when the CPU fails to invoke an exception handler. By handling this exception we avoid fatal _triple faults_ that cause a system reset. To prevent triple faults in all cases we also set up an _Interrupt Stack Table_ to catch double faults on a separate kernel stack.