From: David Daney <ddaney@caviumnetworks.com>
Date: Thu, 28 May 2009 00:47:44 +0000 (-0700)
Subject: MIPS: TLB support for hugetlbfs.
X-Git-Tag: v2.6.31-rc1~291^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd062c847a8cea2821347d7e18165dfa658f7dce;p=pandora-kernel.git

MIPS: TLB support for hugetlbfs.

The TLB handlers need to check for huge pages and give them special
handling.  Huge pages consist of two contiguous sub-pages of physical
memory.

* Loading entrylo0 and entrylo1 need to be handled specially.

* The page mask must be set for huge pages and then restored after
  writing the TLB entries.

* The PTE for huge pages resides in the PMD, we halt traversal of the
  tables there.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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