Spectre mitigation guts Linux 4.20 performance

Posted by bob on Nov 26, 2018 2:12 PM EDT
naked security; By John E. Dunn 		Mail this story
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One of Intel’s fixes for the Spectre variant 2 chip flaw (CVE- 2017-5715) appears to have taken a big bite out of the performance of the latest Linux kernel. The mitigation in question is the Single Thread Indirect Branch Predictors (STIBP), one of three that Intel proposed not long after details of the Meltdown and Spectre flaws were made public in January.

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