From: Vineet Gupta <vgupta@synopsys.com>
Date: Sun, 19 May 2013 08:36:44 +0000 (+0530)
Subject: ARC: Use enough bits for determining page's cache color
X-Git-Tag: v3.10-rc3~10^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=006dfb3c9c44192f06093d65b3a876fa5ad1319a;p=pandora-kernel.git

ARC: Use enough bits for determining page's cache color

The current code uses 2 bits for determining page's dcache color, thus
sorting pages into 4 bins, whereas the aliasing dcache really has 2 bins
(8k page, 64k dcache - 4 way-set-assoc).
This can cause extraneous flushes - e.g. color 0 and 2.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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