On Thu, Mar 02, 2000 at 12:56:30PM -0800, Lyle Coder wrote:
> Im sorry, what I actually meant was....
> So on an MP system, does Linux use the LOCAL APIC or the 8254 as
> the actual timer tick source... ie... which device actually
> generates the timer ticks (IRQ0)? And what vector does it
> generate?
I see this in arch/i386/kernel/i8259.c
/*
* every pentium local APIC has two 'local interrupts', with a
* soft-definable vector attached to both interrupts, one of
* which is a timer interrupt, the other one is error counter
* overflow. Linux uses the local APIC timer interrupt to get
* a much simpler SMP time architecture:
*/
-cw
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