From: David Woodhouse <David.Woodhouse@intel.com>
Date: Fri, 26 Jun 2009 18:10:36 +0000 (+0100)
Subject: intel-iommu: Clean up identity mapping code, remove CONFIG_DMAR_GFX_WA
X-Git-Tag: v2.6.31-rc2~12^2~35
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c7ab48d2acaf959e4d59c3f55d12fdb7ca9afd7c;p=pandora-kernel.git

intel-iommu: Clean up identity mapping code, remove CONFIG_DMAR_GFX_WA

There's no need for the GFX workaround now we have 'iommu=pt' for the
cases where people really care about performance. There's no need to
have a special case for just one type of device.

This also speeds up the iommu=pt path and reduces memory usage by
setting up the si_domain _once_ and then using it for all devices,
rather than giving each device its own private page tables.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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