Re: Crash with fs corruption on 2.4.23-rc1 + CONFIG_ACPI_PROCESSOR

[Stelian Pop <stelian.pop-A5NNTvo2L0pl57MIdRCFDg@public.gmane.org>]

On Sat, Nov 15, 2003 at 07:50:20AM +0100, Ducrot Bruno wrote:

> I think the trouble come from C3, just need to check some values.  If you
> can, it may be usefull that you disable C3, with something like that:
> 
> +		acpi_fadt.plvl3_lat = 1234;

And the patch works, your assumption was correct. 

Now, C3 seem to be reported as supported, 2.6 (correctly) doesn't
promote to it, but 2.4 does. I can't find an obvious reason by reading
the processor.c code (almost identical between 2.4/2.6...)

The only 'strange' thing I see in /proc/acpi/processor/CPU0/power
(different wrt the 2.6 data I posted earlier) is the 'bus mastering 
activity' field:
	active state:            C2
	default state:           C1
	bus master activity:     00000000
	states:
	    C1:                  promotion[C2] demotion[--] latency[000] usage[00000340]
	   *C2:                  promotion[--] demotion[C1] latency[003] usage[00034161]
	    C3:                  <not supported>

Any ideas ?

Stelian.
-- 
Stelian Pop <stelian.pop-A5NNTvo2L0pl57MIdRCFDg@public.gmane.org>
Alcove - http://www.alcove.com


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