From: Richard Purdie <rpurdie@rpsys.net>
Date: Sat, 30 Dec 2006 15:08:50 +0000 (+0100)
Subject: [ARM] 4078/1: Fix ARM copypage cache coherency problems
X-Git-Tag: v2.6.20-rc4~94^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c9d3df5e88ad7db23f5b22f4341c39722a904a4;p=pandora-kernel.git

[ARM] 4078/1: Fix ARM copypage cache coherency problems

If PG_dcache_dirty is set for a page, we need to flush the source page
before performing any copypage operation using a different virtual address.

This fixes the copypage implementations for XScale, StrongARM and ARMv6.

This patch fixes segmentation faults seen in the dynamic linker under
the usage patterns in glibc 2.4/2.5.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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