Messages in this thread | | | From | "Luck, Tony" <> | Date | Fri, 27 Aug 2010 14:11:55 -0700 | Subject | RE: Serious problem with ticket spinlocks on ia64 |
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> One more idea. The wrap-around case is the only one when the high word is > modified. This is in fact the only case when the fetchadd.acq competes with > the st2.rel about the actual contents of that location. I don't know if it > matters...
I pondered that for a while - but I have difficulty believing that fetchadd looks at which bits changed and only writes back the bytes that did.
-Tony
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