From c757e8528a304214d0a9be2e99011b94bf374d37 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Wed, 30 Jul 2014 11:33:25 +0100
Subject: [PATCH] iommu/arm-smmu: use page shift instead of page size to avoid
 division

Arbitrary integer division is not available in all ARM CPUs, so the GCC
may spit out calls to helper functions which are not implemented in
the kernel.

This patch avoids these problems in the SMMU driver by using page shift
instead of page size, so that divisions by the page size (as required
by the vSMMU code) can be expressed as a simple right shift.

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