Re: [RFC] 4-level page table directories.

Have we all agreed by now that the performance hit is relatively minor
(unmeasurable for most cases due to it being less than the noise of the
samples) from 4-level page tables?  Do I need to do any more performance
measurements?

> measured 221 clocks with 3-level page table, versus 298 clocks with

This looks like approx the amount of stall you would see from a cacheline
fill.  Is this value the average of a large number of samples a single
sample.

Thanks,
Robin
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