From: Steve Capper <steve.capper@linaro.org>
Date: Thu, 25 Apr 2013 14:19:21 +0000 (+0100)
Subject: ARM64: mm: Raise MAX_ORDER for 64KB pages and THP.
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~40^2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d03bb1455f3a2804539ed27047fd3b073fdeb3e0;p=pandora-kernel.git

ARM64: mm: Raise MAX_ORDER for 64KB pages and THP.

The buddy allocator has a default MAX_ORDER of 11, which is too
low to allocate enough memory for 512MB Transparent HugePages if
our base page size is 64KB.

This patch introduces MAX_ZONE_ORDER and sets it to 14 when 64KB
pages are used in conjuction with THP, otherwise the default value
of 11 is used.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---

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