lockup on SMP machine

[John Baldwin]

On Monday 27 June 2005 03:26 pm, Zahemszky Gábor wrote:
> John Baldwin wrote:
> > It may be bugs with your BIOS.  Does ACPI work ok if you do 'set
> > hint.apic.0.disabled=1' from the loader?  If so, does it still work ok if
> > you just do 'set kern.smp.disabled=1' from the loader?
>
> Hi!
>
> Thanks for yor answer.
>
>  From loader prompt:
>
> set hint.acpi.0.disabled=0
> set hint.apic.0.disabled=1
>
> works OK. By the way, it was only a quick boot, and a poweroff - before
> it, with acpi, I cannot poweroff. With acpi, an without apic, it works.
> But I had sysctl hw.ncpu = 1 :-(

Ok.

> set hint.acpi.0.disabled=0
> set hint.apic.0.disabled=0
> set kern.smp.disabled=1
>
> The same syptom as before, I cannot boot, I saw the second CPU, and it
> freezes.

Hmm, you shouldn't have seen a second CPU due to 'kern.smp.disabled'.  Can you 
build a kernel without SMP but with 'device apic' for now, and can you grab 
verbose dmesg's from both ACPI being enabled and ACPI being disabled so I can 
compare them?

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org