Patch for "device_attach: estX attach returned 6" on half of the cores

[Eygene Ryabinkin]

Robert,

Mon, May 04, 2009 at 01:42:18AM -0500, Robert Noland wrote:
> Without this patch, cpu0 does attach correctly.

On the Intel MB?  If yes and you'll be able to to some debugging,
please, try the attached patch and send the output of 'dmesg',
'sysctl dev.cpu', 'sysctl dev.cpufreq' and 'sysctl dev.est'.

> > One could check if the patch will help by examining the output of
> > 'apicdump -d' and looking for the Alias () directives for the Processor
> > objects.  Here's what I have for my laptop:
> > -----
> >     Scope (_PR)
> >     {
> >         Processor (P001, 0x01, 0x00000810, 0x06) {}
> >         Alias (P001, CPU1)
> >     }
> > 
> >     Scope (_PR)
> >     {
> >         Processor (P002, 0x02, 0x00000810, 0x06) {}
> >         Alias (P002, CPU2)
> >     }
> > -----
> > So in this case we essentially have 4 Processor objects under _PR,
> > but only two objects are real ones and only they should be attached.
> > 
> > For the completeness, could you, please, show the output of 'acpidump
> > -dt 2>&1' for both of your machines?
> 
> Attached.  The Asus does appear to use aliases as you described.

Then you should have est attached to cpu0/cpu2 and rejected on
cpu1/cpu3, aren't you?  The output of 'sysctl dev.cpu', 'sysctl dev.est'
and 'sysctl dev.cpufreq' will be also helpful.  Will you be able to try
my original patch on the Asus system?

Thanks!
-- 
Eygene
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