x86: Remove useless unwinder backlink from irq regs saving
authorFrederic Weisbecker <fweisbec@gmail.com>
Sat, 2 Jul 2011 13:03:44 +0000 (15:03 +0200)
committerFrederic Weisbecker <fweisbec@gmail.com>
Sat, 2 Jul 2011 16:06:21 +0000 (18:06 +0200)
commit48ffee7d9e6df51b4957bed64115b7beed671374
tree657683cd028ed2e34aabfcc33ad2c0e2d04952ae
parent3b99a3ef55b292180473a221f3d6bc24455f0632
x86: Remove useless unwinder backlink from irq regs saving

The unwinder backlink in interrupt entry is very useless.
It's actually not part of the stack frame chain and thus is
never used.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jan Beulich <JBeulich@novell.com>
arch/x86/kernel/entry_64.S