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Dividing the Linux desktop
LWN.net Weekly Edition for June 13, 2013
A report from pgCon 2013
Little things that matter in language design
That's all quite sensible, but what's this "uc minus" thing that keeps showing up in charts
Getting a handle on caching
Posted May 15, 2008 21:47 UTC (Thu) by arjan (subscriber, #36785)
"UC minus" is basically "Uncached unless something else says otherwise".
So if PAT says "UC minus" and the MTRR says "Write Combining" the result is "Write combining".
However if PAT had said "strong UC" and the MTRR had said "Write combining", the result would
have been "Uncached"
Posted May 15, 2008 21:55 UTC (Thu) by arjan (subscriber, #36785)
(just to clarify; if PAT says "UC minus" and the MTRR says "Cached" then the outcome is still
"uncached"; so it's really "Uncached unless the MTRR says write combining")
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