From: Sergey Dyasly <dserrg@gmail.com>
Date: Tue, 24 Sep 2013 15:38:00 +0000 (+0100)
Subject: ARM: 7840/1: LPAE: don't reject mapping /dev/mem above 4GB
X-Git-Tag: v3.13-rc1~103^2~2^2~23
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3159f372354e8e1f5dee714663d705dd2c7e0759;p=pandora-kernel.git

ARM: 7840/1: LPAE: don't reject mapping /dev/mem above 4GB

With LPAE enabled, physical address space is larger than 4GB. Allow mapping any
part of it via /dev/mem by using PHYS_MASK to determine valid range.

PHYS_MASK covers 40 bits with LPAE enabled and 32 bits otherwise.

Reported-by: Vassili Karpov <av1474@comtv.ru>
Signed-off-by: Sergey Dyasly <dserrg@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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