On Tue, Aug 06, 2013 at 01:54:17PM +0200, Gerd Hoffmann wrote: > Hi, > > > And what are the rules that govern device exclusion from -nodefaults > > list? Why -nodefaults does not create empty machine? > > "qemu -nodefaults" should give you just cpu + northbridge + southbridge. > On modern machine this is everything that most will ever have.
> "qemu" should give you a usable virtual machine, so qemu adds some > optional devices which are (or used to be) standard in a pc: floppy, > cdrom, serial port, parallel port, vga card, nic. > > Sometimes things are a bit odd for historical reasons: > > USB controllers are only present in case you ask for them via '-usb' or > add them via '-device', even though they are part of the southbridge. > > vmport is there unconditionally. And I'd rather make that one > configurable instead of adding more hard-coded devices. > There are more, as I already said hotplug device (I am to lazy to search for more, so I always bring this one). -- Gleb.