On Mon, 9 Jun 2014, Jiang Liu wrote:
> index d4aba16e6bbf..94a56c233e87 100644
> --- a/arch/x86/kernel/apic/io_apic.c
> +++ b/arch/x86/kernel/apic/io_apic.c
> @@ -2638,8 +2638,6 @@ static int __init disable_timer_pin_setup(char *arg)
> }
> early_param("disable_timer_pin_1", disable_timer_pin_setup);
>
> -int timer_through_8259 __initdata;
> -
> /*
> * This code may look a bit paranoid, but it's supposed to cooperate with
> * a wide range of boards and BIOS bugs. Fortunately only the timer IRQ
> @@ -2744,7 +2742,6 @@ static inline void __init check_timer(void)
> legacy_pic->unmask(0);
> if (timer_irq_works()) {
> apic_printk(APIC_QUIET, KERN_INFO "....... works.\n");
> - timer_through_8259 = 1;
> goto out;
> }
> /*
So how does the new NMI watchdog handle systems that use this '8259A
Virtual Wire' mode, pretty common on pre-P6 computers?
Maciej
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