ACPI panic on unplugging the power cord.

[Jung-uk Kim]

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On 2013-01-24 04:41:08 -0500, Andriy Gapon wrote:
> on 24/01/2013 02:54 Jung-uk Kim said the following:
>> 
>> Can you please try the attached patch?  It is also available from
>> here:
>> 
>> http://people.freebsd.org/~jkim/utcache.diff
> 
> Jung-uk,
> 
> I think that I have a much better patch for all potential ACPI
> object cache problems :-) 
> http://people.freebsd.org/~avg/acpi-uma-cache.diff
> 
> What do you think?

We have to fix this bug because local cache is always used for
userland applications, e.g., iasl.

BTW, I tried something like that long ago.  In fact, the first attempt
goes all the way back to this patch (warning: it's naive, broken, and
overly complicated):

http://people.freebsd.org/~jkim/acpica/OsdCache.diff

I have more up-to-date and correct patch to use UMA but I'm still not
100% convinced whether we want to do it or not.  When utcache.c works,
it works fairly well, actually. :-)

Jung-uk Kim
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