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OpenBSD disables Intel’s hyper-threading
OpenBSD has disabled Intel’s hyper-threading technology, citing security concerns.
As detailed in this post, OpenBSD maintainer Mark Kettenis wrote that “SMT (Simultanious Multi Threading) implementations typically share TLBs and L1 caches between threads.” --The Register, 20 June 2018 http://www.theregister.co.uk/2018/06...yperthreading/
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When you see a good move, look for a better one. --Lasker |
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Say hello to PortSmash (CVE-2018-5407), the new side-channel attack on HTT:
https://www.zdnet.com/article/intel-...vulnerability/ Quote:
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It's interesting to mention what Colin Percival pointed out on the topic back in 2005 already: Hyper-Threading Considered Harmful
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