From d7a6c68a2f991b18e61ebfe0251ab42c054d9a1d Mon Sep 17 00:00:00 2001
From: Shi Weihua <shiwh@cn.fujitsu.com>
Date: Tue, 19 Feb 2008 10:25:09 +0800
Subject: [PATCH] [IA64] signal(ia64): add a signal stack overflow check

The similar check has been added to x86_32(i386) in commit
id 83bd01024b1fdfc41d9b758e5669e80fca72df66.
So we add this check to ia64 and improve it a liitle bit in that
we need to check for stack overflow only when the signal is on stack.

Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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