Date: Mon, 7 Nov 2005 15:15:24 -0800
From: Chris Wright <chrisw@osdl.org>
To: "Moore, Robert" <robert.moore@intel.com>
Cc: tzachar@cs.bgu.ac.il, linux-kernel@vger.kernel.org,
       acpi-devel@lists.sourceforge.net
Subject: Re: [ACPI] ACPI and PRREMPT bug
Message-ID: <20051107231524.GW7991@shell0.pdx.osdl.net>
References: <971FCB6690CD0E4898387DBF7552B90E0356B628@orsmsx403.amr.corp.intel.com>
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* Moore, Robert (robert.moore@intel.com) wrote:
> You might try setting this flag (in acglobal.h) to TRUE:
> 
> /*
>  * Automatically serialize ALL control methods? Default is FALSE,
> meaning
>  * to use the Serialized/NotSerialized method flags on a per method
> basis.
>  * Only change this if the ASL code is poorly written and cannot handle
>  * reentrancy even though methods are marked "NotSerialized".
>  */
> ACPI_EXTERN UINT8       ACPI_INIT_GLOBAL (AcpiGbl_AllMethodsSerialized,
> FALSE);

I've chatted with another person having this issue.  Booting with
acpi_serialize (which sets that flag to true) does seem to fix the
problem.  I'm guessing thread_count gets decremented twice for one
increment, causing it to underflow wrapping to -1.

thanks,
-chris
-
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