Re: STI, HLT in acpi_cpu_idle_c1

From: John Baldwin <jhb_at_FreeBSD.org>
Date: Wed, 30 Jun 2004 13:28:08 -0400
On Wednesday 30 June 2004 11:04 am, Gerrit Nagelhout wrote:
> John Baldwin wrote:
> > As per an errata that Brian pointed out, try using this patch
> > perhaps.  You
> > can leave your isr_problem one in and hopefully the counter
> > will stay at zero
> > if it works.  It adds some dummy reads of the local APIC to
> > EOI's for IPIs.
>
> This patch doesn't seem to help any.  My isr problem detection code
> still found a problem 10 times in about 17 hours of stress testing.
> I know that the HACK I added to make the system work is probably
> incorrect, but what kind of side effects would you expect to see from
> just calling EOI, and possibly not handling the interrupt?

I think it does handle the interrupt, but that the EOI is somehow lost or 
ignored,or that somehow we don't send an EOI in some edge case.

-- 
John Baldwin <jhb_at_FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org
Received on Wed Jun 30 2004 - 16:19:49 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:37:59 UTC