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List:       freedesktop-xorg
Subject:    Re: EXA
From:       Lukas Hejtmanek <xhejtman () ics ! muni ! cz>
Date:       2007-08-07 12:49:40
Message-ID: 20070807124940.GG4070 () ics ! muni ! cz
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On Tue, Aug 07, 2007 at 02:32:28PM +0200, Roland Scheidegger wrote:
> If you write to some area with the chip and then you're going to
> (potentially) access the same area with direct cpu access, there is no way 
> around waiting for the gpu to finish. This is not chip specific.
> I can't see a reason though why you'd need to busy-wait.

Yes, that's exactly what I am asking. Whether chip support some kind of call
back (e.g. via IRQ) or busy-wait is just necessary. 

-- 
Lukáš Hejtmánek
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