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THP broken on MIPS-32 [3.8]

To: Ralf Baechle <ralf@linux-mips.org>
Subject: THP broken on MIPS-32 [3.8]
From: Ben Hutchings <ben@decadent.org.uk>
Date: Sat, 02 Mar 2013 20:51:39 +0000
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, linux-mips@linux-mips.org
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You implemented transparent huge pages for MIPS:

commit 970d032fec3f9687446595ee2569fb70b858a69f
Author: Ralf Baechle <ralf@linux-mips.org>
Date:   Thu Oct 18 13:54:15 2012 +0200

    MIPS: Transparent Huge Pages support

but THP also changed in 3.8:

commit fc9fe822f7112db23e51e2be3b886f5d8f0afdb6
Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Date:   Wed Dec 12 13:50:51 2012 -0800

    thp: copy_huge_pmd(): copy huge zero page

This added the requirement for pfn_pmd(), which is only defined if
CONFIG_64BIT && !CONFIG_CPU_VR41XX.

Ben.

-- 
Ben Hutchings
Computers are not intelligent.  They only think they are.

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