From: David S. Miller <davem@sunset.davemloft.net>
Date: Sat, 4 Feb 2006 08:10:01 +0000 (-0800)
Subject: [SPARC64]: Refine register window trap handling.
X-Git-Tag: v2.6.17-rc1~1184^2~201
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=314ef6859750b6539eac48d78059bb7986f29cb1;p=pandora-kernel.git

[SPARC64]: Refine register window trap handling.

When saving and restoing trap state, do the window spill/fill
handling inline so that we never trap deeper than 2 trap levels.
This is important for chips like Niagara.

The window fixup code is massively simplified, and many more
improvements are now possible.

Signed-off-by: David S. Miller <davem@davemloft.net>
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