From: Will Deacon <will.deacon@arm.com>
Date: Fri, 14 Nov 2014 17:16:49 +0000 (+0000)
Subject: iommu: introduce generic page table allocation framework
X-Git-Tag: fixes-v4.0-rc1~123^2~3^2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fdb1d7be7c4d452e9735aeb2b60ae8a2fcf0a514;p=pandora-kernel.git

iommu: introduce generic page table allocation framework

This patch introduces a generic framework for allocating page tables for
an IOMMU. There are a number of reasons we want to do this:

  - It avoids duplication of complex table management code in IOMMU
    drivers that use the same page table format

  - It removes any coupling with the CPU table format (and even the
    architecture!)

  - It defines an API for IOMMU TLB maintenance

Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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