RE: Cache coherency and snooping

From: Rik van Riel (riel@conectiva.com.br)
Date: Tue Aug 13 2002 - 20:38:19 EST

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On Tue, 13 Aug 2002, Imran Badr wrote:

> Please advise if following sequence of operations are going to help:
>
> alloc memory
> reserve the page
> flush every cache
> call ioremap_nocache

Won't work around hardware limitations. If the hardware
cannot turn off caching, all you could do is flush the
page to ram before every explicit IO request...

regards,

Rik

-- Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/ http://distro.conectiva.com/

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