| Date | Mon, 9 Jun 2014 15:41:12 +0100 (BST) | From | "Maciej W. Rozycki" <> | Subject | Re: [Patch V4 11/42] x86, ioapic: kill unused global variable timer_through_8259 |
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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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