Re: STI, HLT in acpi_cpu_idle_c1

From: Scott Long <scottl_at_freebsd.org>
Date: Fri, 25 Jun 2004 12:30:31 -0600
Gerrit Nagelhout wrote:

> Scott Long wrote:
> 
>>This likely means that you're no longer getting any interrupts at all.
>>Btw, is the aac driver running it MPSAFE or FAST mode?  I'm 
>>not sure if
>>changing it to MPSAFE mode will make a difference, and it 
>>certainly will
>>change the timings in our system.
>>
>>Scott
>>
> 
> 
> Looks like it's running in FAST mode.  What will change by running it in
> MPSAFE mode?

In FAST mode, the interrupt handler is directly dispatched when the
interrupt comes in.  In MPSAFE mode, it runs in an ithread.

Scott
Received on Fri Jun 25 2004 - 16:32:29 UTC

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