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From: Hans Petter Selasky <hselasky@c2i.net>
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Cc: Adrian Chadd <adrian@freebsd.org>
Subject: Re: newbus IO ordering semantics - moving forward
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On Thursday 27 October 2011 22:49:12 Adrian Chadd wrote:
> I have no idea. Which architectures would benefit?

Often PIO is rare with high performance devices. Usually data is moved using 
DMA.

--HPS