From: Catalin Marinas <catalin.marinas@arm.com>
Date: Fri, 10 Mar 2006 22:26:47 +0000 (+0000)
Subject: [ARM] 3356/1: Workaround for the ARM1136 I-cache invalidation problem
X-Git-Tag: v2.6.16~57^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=141fa40cff90881ac4d81f6afa27bc283fe7acca;p=pandora-kernel.git

[ARM] 3356/1: Workaround for the ARM1136 I-cache invalidation problem

Patch from Catalin Marinas

ARM1136 erratum 371025 (category 2) specifies that, under rare
conditions, an invalidate I-cache by MVA (line or range) operation can
fail to invalidate a cache line. The recommended workaround is to
either invalidate the entire I-cache or invalidate the range by
set/way rather than MVA.

Note that for a 16K cache size, invalidating a 4K page by set/way is
equivalent to invalidating the entire I-cache.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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