From: Will Deacon <will.deacon@arm.com>
Date: Tue, 5 Nov 2013 15:59:53 +0000 (+0000)
Subject: iommu: add IOMMU_EXEC flag for safely allowing XN mappings
X-Git-Tag: v3.14-rc1~50^2~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca13bb3d4e54f5c30089e55d5b8f4bb80c8f05e2;p=pandora-kernel.git

iommu: add IOMMU_EXEC flag for safely allowing XN mappings

Whilst most IOMMU mappings should probably be non-executable, there
may be cases (HSA?) where executable mappings are required.

This patch introduces a new mapping flag, IOMMU_EXEC, to indicate that
the mapping should be mapped as executable.

Signed-off-by: Will Deacon <will.deacon@arm.com>
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