[IA64] signal(ia64): add a signal stack overflow check
authorShi Weihua <shiwh@cn.fujitsu.com>
Tue, 19 Feb 2008 02:25:09 +0000 (10:25 +0800)
committerTony Luck <tony.luck@intel.com>
Tue, 4 Mar 2008 22:10:59 +0000 (14:10 -0800)
commitd7a6c68a2f991b18e61ebfe0251ab42c054d9a1d
tree8d4a949d0852656ed54e0610d6a316987117be71
parentbd3be240cb4e513c3d5e7d773ab9a8ce646befbd
[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>
arch/ia64/kernel/signal.c