From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Tue, 25 Jun 2013 18:33:44 +0000 (+0200)
Subject: m68k/sun3: Dynamically allocate the table to track IOMMU use
X-Git-Tag: v3.14-rc1~183^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b3e8de9b3e9c0ffd5cb1600e6075bede4272868;p=pandora-kernel.git

m68k/sun3: Dynamically allocate the table to track IOMMU use

As Sun 3 kernels cannot be multi-platform due to the different Sun 3 MMU
type, it made sense to statically allocate the table to track IOMMU use.

However, Sun 3x kernels can be multi-platform. Furthermore, Sun 3x uses
a larger table than Sun 3 (8192 bytes instead of 512 bytes).

Hence switch to dynamic allocation of this table using the bootmem
allocator to avoid wasting 8192 bytes when not running on a Sun 3x.
As this allocator returns zeroed memory, there's no need to explicitly
initialize the table to zeroes.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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