From: David Gibson <david@gibson.dropbear.id.au>
Date: Thu, 24 Nov 2005 03:16:15 +0000 (+1100)
Subject: [PATCH] powerpc: Make hugepage mappings respect hint addresses
X-Git-Tag: v2.6.16-rc1~666^2~110
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=456752f7505ef8f580ffd157558e661da2767d99;p=pandora-kernel.git

[PATCH] powerpc: Make hugepage mappings respect hint addresses

Currently, the powerpc version of hugetlb_get_unmapped_area() entirely
ignores the hint address.  The only way to get a hugepage mapping at a
specified address is with MAP_FIXED, in which case there's no way
(short of parsing /proc/self/maps) for userspace to tell if it will
clobber an existing mapping.  This is inconvenient, so the patch below
makes hugepage mappings use the given hint address if possible.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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