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Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command lin


From: Alex Williamson
Subject: Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax
Date: Mon, 18 Jan 2016 09:32:21 -0700

On Mon, 2016-01-18 at 16:00 +0000, Peter Maydell wrote:
> On 18 January 2016 at 15:55, Alex Williamson <address@hidden
> com> wrote:
> > On Mon, 2016-01-18 at 15:54 +0100, Eric Auger wrote:
> > > On 01/18/2016 03:14 PM, Peter Maydell wrote:
> > > > ...but presumably the x86 folks have been here before us
> > > > and know how this should work :-)
> > 
> > No, we haven't.  vfio-pci devices are opaque on x86, we don't
> > know or care that they're NICs or HBAs or GPUs or whatever.
> >  If you don't want the default NIC, turn it off with -net none.
> >  Don't want graphics, -nographics.  Default QEMU devices may be
> > useful for the commandline, but do they really matter in
> > practical use?
> 
> "User is expected to use -net none" is a fine answer to "how
> this should work"...
> 
> (I was thrown off track because http://wiki.qemu.org/Documentation/Ne
> tworking
> doesn't document '-net none', and also -net is the legacy
> syntax -- is there a -netdev equivalent?)

My guess would be that -netdev is often used in conjunction with
-nodefaults and therefore it becomes unnecessary to explicitly disable
it.  Thanks,

Alex



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