Re: [PATCH] I/O APIC: AEOI timer acknowledgement clean-ups

[Ingo Molnar <mingo@elte.hu>]

* Maciej W. Rozycki <macro@linux-mips.org> wrote:

> The code that used to be in do_slow_gettimeoffset() that relied on the 
> IRR bit of the master 8259A PIC for IRQ0 to check the state of the 
> output timer 0 of the PIT is no longer there.  As a result, there is 
> no need to use the POLL command to acknowledge the timer interrupt in 
> the "8259A Virtual Wire", except for the NMI watchdog when the 
> i82489DX APIC is used (this is because this particular APIC treats 
> NMIs as level-triggered and keeping the input asserted would keep 
> motherboard NMI sources held off for too long).  Remove the unneeded 
> bits and adjust comments accordingly.

applied to latest -tip, thanks Maciej!

>  It seems to work for me with the NMI watchdog routed through the I/O 
> APIC.  The next step should move the bits from timer_interrupt() to 
> nmi_watchdog_tick() where they now belong, but let's check nothing 
> breaks for people first.

ok.

	Ingo