[PATCHv2 06/11] arm64: entry: move el1 irq/nmi logic to C

[He Ying]

Hi Mark,


I have faced a performance regression for handling IPIs since this commit.

I caculate the cycles from the entry of el1_irq to the entry of 
gic_handle_irq.

 From my test, this commit may overhead an average of 200 cycles. Do you

have any ideas about this? Looking forward to your reply.


Thanks.