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SubjectPCI bus mastering question
Hello dear list readers,

I've been googling on the topic for a couple of minutes and I got some question.
If PCI bus mastering means the device gets the control over the bus and does all
device voodoo is it possible to achieve the same effects without using
To be more specific: if the device wrote some - let's say register for
example - to a
memory location, would the result be identical if a kernel read the
same register from a device and stored it somewhere in memory? Or does
mastering trigger some special
stuff in a device so it acts different?

kind regards
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