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Date: Wed, 25 Nov 2009 23:21:18 +0100
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] debugcon: support for debugging consoles
	(e.g.	Bochs port 0xe9)
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To: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: qemu-devel@nongnu.org, "H. Peter Anvin" <hpa@zytor.com>

On 11/25/09 19:01, H. Peter Anvin wrote:
> Gerd Hoffmann wrote:
>>
>> You can stick it into a config file[1] like this:
>>
>> [chardev "debuglog"]
>> backend = "file"
>> path = "/path/to/debug.log"
>>
>> [device]
>> driver = "isa-debugcon"
>> chardev = "debuglog"
>>
>> Then use "qemu -readconfig $file".
>>
>
> Great... at least in my opinion, one of the things that makes Qemu so
> much easier to use than Bochs is that one has a comprehensive (and
> comprehensable) command line and don't have to set up a configuration
> file for every trivial little thing. It's a good thing for long-living
> virtualization instances, but I would be sad if the command line will
> end up being neglected.

You can happily mixup things as you like.  Use pure command line.  Use 
pure config file (well, at least is that the plan, it doesn't fully work 
yet).  Mix cmd line switches and config file.  Reading multiple config 
files works just fine too, so you can split your vm config into multiple 
parts and enable/disable parts by reading/not reading the file in 
question ...

cheers,
   Gerd