[regression v4.0-rc1] mm: IPIs from TLB flushes causing significant performance degradation.

[Matt]

Hi Dave,


is the following thread and patch related to your problem,

I just happened to stumble upon it a few days ago:

https://lkml.org/lkml/2014/12/17/280 ,
http://marc.info/?l=linux-kernel&m=141876582909898&w=2
Re: post-3.18 performance regression in TLB flushing code

Linus already posted a fix to the problem, however I can't seem to
find the matching commit in his tree (searching for "TLC regression"
or "TLB cache").


Kind Regards

Matt
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