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[SPARC64]: Refine register window trap handling.
authorDavid S. Miller <davem@sunset.davemloft.net>
Sat, 4 Feb 2006 08:10:01 +0000 (00:10 -0800)
committerDavid S. Miller <davem@sunset.davemloft.net>
Mon, 20 Mar 2006 09:11:36 +0000 (01:11 -0800)
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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