radeon, apertures & memory mapping

[Jon Smirl]

On Mon, 14 Mar 2005 08:49:13 +1100, Benjamin Herrenschmidt
<benh at kernel.crashing.org> wrote:
> > If you are doing fallback calculations in a 6MB buffer that is 1,500
> > pages. Accessing all of this effectively flushes the data cache. Once
> > you are done with it you probably don't want those pages in the cache
> > anyway.
> 
> I wouldn't count on it flushing anything

I meant flushes out everything except the 1,500 pages you just
accessed. Since you don't want those pages any more a total cache
flush shouldn't make a difference, you don't want any of these pages
in the cache anyway.

> 
> Ben.
> 
> 


-- 
Jon Smirl
jonsmirl at gmail.com