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Date: Tue, 8 Dec 2009 11:39:43 -0500 (EST)
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] Re: [FOR 0.12 PATCH v3 10/21] default devices: add
	global cmd line option.
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To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel@nongnu.org

> > Here is my thinking: if you used -writeconfig, your machine description
> > is (at least in theory) entirely included in the config file including
> > (again in theory) the default devices.
> 
> The default devices are *not* included by in the file created by 
> -writeconfig.

Yes, that's why I wrote "at least in theory".  It doesn't now but that
would be a bug, because it makes -nodefaults another legacy option that
has to be remembered and passed again upon -readconfig.

> Devices created via -readconfig are treated like devices created via 
> [device] sections in the config file.  So it doesn't matter whenever you 
> configure your isa-serial device via command line or config file, in any 
> case it will make qemu not create the default serial port.

I was thinking about the case when you don't want at all a particular
default device.

Paolo