From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Wed, 4 Jul 2007 20:16:33 +0000 (+0100)
Subject: [ARM] Fix non-page aligned boot time mappings
X-Git-Tag: v2.6.22~22^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b9c7b4d07fd8981193a2c4ecb650566f42d1219;p=pandora-kernel.git

[ARM] Fix non-page aligned boot time mappings

AT91SAM9260 stopped booting with the recent changes to MM
initialisation - it was asking for a non-aligned virtual address
which caused loops to be non-terminal.  Fix this by rounding
virtual addresses down, but remember to include the offset in
the length, and round the length up to the following page.

This means that asking for a mapping of 4K starting at 2K into
a page maps two pages as one would expect.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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