no SMP without ACPI? (amd64)

[Kris Kennaway]

Chad Leigh -- Shire.Net LLC wrote:
> Hi
> 
> I have a 6.2R system (amd64) with the latest patch level.
> 
> The motherboard is a Tyan S5197 i3110 based board with a Core 2 Quad 2.4 
> ghz processor.  There is 4GB of memory and an Areca ARC-1231ML raid card.
> 
> The problem is that I have to boot without ACPI or the system will 
> randomly reboot itself when doing something. It will sit idle for ages 
> but if I do a system build (make buildworld for example), it usually 
> will not make it through without rebooting.  If I boot without ACPI 
> support (#2 in the boot loader), then the system is fine, I can do a 
> billion builds without incident, except that I only get 1 CPU.  (Yes, 
> the kernel has SMP option built in).
> 
> I would really like to run with all 4 cores but cannot run with ACPI at 
> the moment due to instability.
> 
> Any suggestions?  Any way to get "old-style" SMP detection working (ie, 
> without ACPI)?

Maybe not, I think ACPI is required by the amd64 spec.

Note that this may well be hardware related: without acpi you are only 
using one CPU, etc, so if one of the others is bad it will only fail 
when you have ACPI enabled -- even if ACPI itself is not to blame.

Kris