missing interrupts?

[Ping Mai]

Thanks John.
tried it but didn't help.

--- On Fri, 8/8/08, John Baldwin <jhb at freebsd.org> wrote:

> From: John Baldwin <jhb at freebsd.org>
> Subject: Re: missing interrupts?
> To: freebsd-acpi at freebsd.org
> Cc: "ping" <pingmai at yahoo.com>, freebsd-drivers at freebsd.org, freebsd-hackers at freebsd.org
> Date: Friday, August 8, 2008, 1:10 PM
> On Friday 08 August 2008 02:16:20 pm ping wrote:
> > this is an interrupt handler that's attached to
> irq 31 on ioapic1 on a 6.1R 
> kernel, type INTR_TYPE_NET|INTR_MPSAFE.  seems that
> it's missing interrupts.  
> watching the KTR trace, it was running along fine, then it
> just stopped.  
> intr handler stopped getting run.  but the interrupt
> register on chip was 
> high.  is this a case of lost interrupts? or hardware
> problem?
> 
> There is one possible race in the I/O APIC code someone
> pointed me at 
> recently.  You can try expanding the scope of the icu_lock
> to cover all of 
> ioapic_program_intpin() to see if it fixes your issue 
> (sys/<arch>/<arch>/io_apic.c)
> 
> -- 
> John Baldwin