STI, HLT in acpi_cpu_idle_c1

Gerrit Nagelhout gnagelhout at
Wed Jun 30 08:04:45 PDT 2004

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?


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