From: Kim Phillips <kim.phillips@linaro.org>
Date: Thu, 26 Jun 2014 00:45:51 +0000 (+0100)
Subject: ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~130^2~11^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b88657674d39fc2127d62d0de9ca142e166443c8;p=pandora-kernel.git

ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping

A userspace process can map device MMIO memory via VFIO or /dev/mem,
e.g., for platform device passthrough support in QEMU.

During early development, we found the PAGE_S2 memory type being used
for MMIO mappings.  This patch corrects that by using the more strongly
ordered memory type for device MMIO mappings: PAGE_S2_DEVICE.

Signed-off-by: Kim Phillips <kim.phillips@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---

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