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Old 6th March 2012
J65nko J65nko is offline
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Default DragonFly BSD developer finds hardware bug in several AMD CPUs
From http://h-online.com/-1464680

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Matthew Dillon, founder and main developer of the DragonFly BSD project has uncovered a hardware bug in several AMD processors. Dillon received confirmation from AMD that a bug he had found in the CPU's fill_sons_in_loop code last year does indeed lead to segmentation faults under certain conditions.
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Old 6th March 2012
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Impressive work.
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Old 8th March 2012
J65nko J65nko is offline
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Some more information can be found at http://www.theregister.co.uk/2012/03...bug_dragonfly/
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Old 8th April 2012
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8April2012 OpenBSD current changes
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Implemented AMD workaround for 10h & 12h CPUs cpu(4/amd64) errata 721 "Processor May Incorrectly Update Stack Pointer".
Run amd64 identifycpu() on its own cpu.
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