This patch replaces the idiom:

	func (args..., long stack) {
		struct pt_regs *regs = (struct pt_regs *) &stack;

with the more commonly used:

	func (args..., struct pt_regs regs) {

The latter didn't used to work with the very earliest kernels and
compilers (anybody remember egcs?) but gcc-3.3 and probably even
gcc-2.96 don't have a problem with it anymore.

The change also makes sparse happier, since it doesn't like it when
you access memory past the end of the declared size of that variable.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>