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Date: Thu, 15 Nov 2007 23:32:39 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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To: John Baldwin <jhb@freebsd.org>
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Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org
Subject: Re: cvs commit: src/sys/amd64/amd64 db_trace.c exception.S machdep.c
 trap.c
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John Baldwin wrote:
> On Thursday 15 November 2007 05:00:57 pm John Baldwin wrote:
>> jhb         2007-11-15 22:00:57 UTC
>>
>>   FreeBSD src repository
>>
>>   Modified files:
>>     sys/amd64/amd64      db_trace.c exception.S machdep.c trap.c 
>>   Log:
>>   Add support for cross double fault frames in stack traces:
>>   - Populate the register values for the trapframe put on the stack by the
>>     double fault handler.
>>   - Teach DDB's trace routine to treat a double fault like other trap 
> frames.
>>   
>>   MFC after:      3 days
> 
> As an aside, because amd64 uses much saner stack frames than i386, kgdb will 
> trace across a double fault just fine w/o any further patches if the kernel 
> has this fix.
> 

Nice.

Kris