tree 7991b0f3910dafb58e1ef92044153e5383b01850
parent e7fcdb79ecaa01e2eba06e3fb64e10455bdb5aa7
author Catalin Marinas <catalin.marinas@arm.com> 1142029607 +0000
committer Russell King <rmk+kernel@arm.linux.org.uk> 1142029607 +0000

[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>