From owner-freebsd-current  Wed Jan 31 23:53:25 2001
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Date: Thu, 1 Feb 2001 13:53:00 +0600 (NOVT)
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From: nnd@mail.nsk.ru
To: current@FreeBSD.ORG
Subject: Re: cvs commit: src/sys/dev/acpica/Osd OsdSynch.c
In-Reply-To: <200101310947.f0V9lie06043@mass.dis.org>
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In article <200101310947.f0V9lie06043@mass.dis.org> you wrote:
>> msmith      2001/01/31 01:35:50 PST
>> 
>>   Modified files:
>>     sys/dev/acpica/Osd   OsdSynch.c 
>>   Log:
>>   Add some debugging.
>>   
>>   Turn off semaphores.  Nobody else implements them, and there is lots of
>>   AML out there which does totally absurd things with them, meaning that
>>   if we try to do the right thing we are guaranteed to fail.
> 
> Anyone that was having problems with ACPI hanging on their systems should 
> try again; I'm pretty sure that a lot of our problems were stemming from 
> deadlocks caused by us being the only OS to actually *implement* 
> synchronisation primitives for ACPI...

	My -current on ABIT's BP6 dual Celerons hungs before this
commit and normally boots after it. 

	N.Dudorov 


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