From: Chris Zankel <chris@zankel.net>
Date: Wed, 22 Aug 2007 17:14:51 +0000 (-0700)
Subject: [XTENSA] Add support for cache-aliasing
X-Git-Tag: v2.6.23-rc7~43^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6656920b0b50beacb6cb64cf55273cbb686e436e;p=pandora-kernel.git

[XTENSA] Add support for cache-aliasing

Add support for processors that have cache-aliasing issues, such as
the Stretch S5000 processor. Cache-aliasing means that the size of
the cache (for one way) is larger than the page size, thus, a page
can end up in several places in cache depending on the virtual to
physical translation. The method used here is to map a user page
temporarily through the auto-refill way 0 and of of the DTLB.
We probably will want to revisit this issue and use a better
approach with kmap/kunmap.

Signed-off-by: Chris Zankel <chris@zankel.net>
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