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

From: Ingo Molnar
Date: Wed Mar 04 2015 - 18:35:55 EST

* Dave Chinner <david@xxxxxxxxxxxxx> wrote:

> > After going through the series again, I did not spot why there is
> > a difference. It's functionally similar and I would hate the
> > theory that this is somehow hardware related due to the use of
> > bits it takes action on.
> I doubt it's hardware related - I'm testing inside a VM, [...]

That might be significant, I doubt Mel considered KVM's interpretation
of pte details?


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