[PATCH] x86-64: don't use set_irq_regs()
We don't need to setup _irq_regs in smp_xxx_interrupt (except apic timer). These handlers run with irqs disabled and do not call functions which need "struct pt_regs". Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
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