From: Catalin Marinas <catalin.marinas@arm.com>
Date: Mon, 21 Jul 2014 14:54:50 +0000 (+0100)
Subject: arm64: Add support for 48-bit VA space with 64KB page configuration
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~183^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=383c2799113b00a5f12c820ff0fd3dfca9e5be89;p=pandora-kernel.git

arm64: Add support for 48-bit VA space with 64KB page configuration

This patch allows support for 3 levels of page tables with 64KB page
configuration allowing 48-bit VA space. The pgd is no longer a full
PAGE_SIZE (PTRS_PER_PGD is 64) and (swapper|idmap)_pg_dir are not fully
populated (pgd_alloc falls back to kzalloc).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Jungseok Lee <jungseoklee85@gmail.com>
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