8.1-RELEASE - fatal trap 12 during install

[Andriy Gapon]

[ping]

on 18/10/2010 09:44 Andriy Gapon said the following:
> on 16/10/2010 16:40 Jacob Lambert said the following:
>> On Saturday, October 16, 2010, Andriy Gapon <avg at icyb.net.ua> wrote:
>>> [restored CC]
>>>
>>> on 16/10/2010 03:37 Jacob Lambert said the following:
>>>> On Friday, October 15, 2010, Andriy Gapon <avg at icyb.net.ua> wrote:
>>>>> on 15/10/2010 22:20 Jacob Lambert said the following:
>>>>>> Hello everyone,
>>>>>>
>>>>>>  I've got a shiny new Supermicro H8QG6-F w/ 4x Opteron 6168 12 core
>>>>>> CPUs and 128GB of DDR3 1333 ECC RAM onto which I've been trying to
>>>>>
>>>>> Do I read it correct that that's 48 logical CPUs total?
>>>>>
>>>> Yup, 48.  :)
>>>
>>> http://article.gmane.org/gmane.os.freebsd.current/128099
>>>
>>> In addition to that cpumask_t is only 32-bit even on amd64 and it's used all
>>> over the place, so currently you won't have any luck with > 32 CPUs.
>>> :-(
>> Thanks for the link!
>> BTW, I've got a box for testing if anybody wants to tackle >32 CPUs. :)
> 
> I've just followed up to that post with a patch.
> It should allow you to boot without panics, although not more than 32 CPUs will
> actually be used.
> Could you please test the patch and post your results in _that_ thread?
> Thanks!
> 
>>> You might want to try booting with ACPI enabled and only one socket populated.
>> Already tried that and I get the same error as if it's fully populated.
> 
> That's probably because the LAPICs are still marked as enabled and we check
> whether a CPU is enabled after UMA initialization.
> 


-- 
Andriy Gapon