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Date: Thu, 07 Nov 2002 21:41:35 -0500 (EST)
From: John Baldwin <jhb@FreeBSD.org>
To: David Xu <davidxu@freebsd.org>
Subject: Re: cvs commit: src/sys/i386/i386 vm86.c
Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
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On 08-Nov-2002 David Xu wrote:
> 
> ----- Original Message ----- 
> From: "David Xu" <davidxu@FreeBSD.org>
> To: <cvs-committers@FreeBSD.org>; <cvs-all@FreeBSD.org>
> Sent: Friday, November 08, 2002 9:09 AM
> Subject: cvs commit: src/sys/i386/i386 vm86.c
> 
> 
>> davidxu     2002/11/07 17:09:16 PST
>> 
>>   Modified files:
>>     sys/i386/i386        vm86.c 
>>   Log:
>>   use critical_enter/exit to add a critical section around BIOS call,
>>   this unbreaks WITNESS.
>>   
>>   Pointed out by: jhb
>>   
>>   Revision  Changes    Path
>>   1.50      +9 -5      src/sys/i386/i386/vm86.c
> 
> I turned WITNESS all the time, but it hadn't reported any error message
> when spin lock was used.

Turn WITNESS_SKIPSPIN off if you are using spin locks.

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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