From: Gerald Schaefer <geraldsc@de.ibm.com>
Date: Mon, 4 Dec 2006 14:40:45 +0000 (+0100)
Subject: [S390] Add dynamic size check for usercopy functions.
X-Git-Tag: v2.6.20-rc1~34^2~40^2~15^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=59f35d53fde3987d071ea1c9bf1c9ba29fcb69fe;p=pandora-kernel.git

[S390] Add dynamic size check for usercopy functions.

Use a wrapper for copy_to/from_user to chose the best usercopy method.
The mvcos instruction is better for sizes greater than 256 bytes, if
mvcos is not available a page table walk is better for sizes greater
than 1024 bytes. Also removed the redundant copy_to/from_user_std_small
functions.

Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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