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by mhh__ 1546 days ago
Big citation needed there.

Spectre mitigations shouldn't effect quite a lot of programs because there's nothing to mitigate within the same address space.
1 comments
chomp 1546 days ago
https://www.phoronix.com/scan.php?page=article&item=spectre-...

Worst case I see is approximately 33% performance penalty in aggregate for Xeon parts, with much worse performance in specific scenarios. Comparing the original Bulldozer benchmarks, this does close the gap like GP suggested.

Also, refresh your memory on how the mitigations work because there’s definitely an impact for most programs.

link
mhh__ 1546 days ago
Ok yes I was too black and white, but still a lot of programs should be OK. You need to harden web browsers differently to (say) a calculator.

Also bulldozer is almost definitely vulnerable to spectre.

link