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Microsoft introduces drastic performance fix for Spectre variant

After fixes were introduced for several variants of the Spectre speculative execution exploit, performance took a nose dive. Microsoft and many other industry giants have been working to patch security flaws for over a year now, but most fixes have degraded performance. Borrowing ideas from Google, Microsoft has now pushed out “retpoline for Windows” to improve CPU performance.

Retpoline is a portmanteau of return and trampoline. Instead of guessing where a program will jump to next during its execution, an indirect method of determining where to go is implemented.

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