On 03/10/2014 11:26 PM, Paolo Bonzini wrote: > Il 10/03/2014 13:23, Alexey Kardashevskiy ha scritto: >> On 03/10/2014 05:07 AM, Paolo Bonzini wrote: >>> Il 08/03/2014 14:26, Alexey Kardashevskiy ha scritto: >>>>>> I think that after this patch, "-nodefaults -device VGA" will get a USB >>>>>> controller that it didn't get before. >>>> >>>> I suspect what was meant by "the machine not aware of the graphics device" >>>> is that the guest won't work with VGA and without keyboard (default >>>> console will be vga + keyboard and not serial) which is USB and this is >>>> why >>>> the patch is trying to add USB. >>> >>> But with -nodefaults QEMU should never be adding USB. >> >> As I was told in this list before, even with -nodefaults, QEMU should not >> create a machine which is known for not working or not being supported. >> Having VGA and not having any input device is kind of such a config, no? > > -nodefaults is exactly the opposite of that: no magic whatsoever. No VGA, > no serial, nothing.
qemu-system-x86_64 -enable-kvm -nographic -nodefaults -monitor stdio "info qtree" shows a whole bunch of devices like "i440FX-pcihost", "isa-fdc", "piix3-ide", "vmmouse", "vmport" (what are the last two?). I was told here that 8042 is to emulate A20, ok, but others - I do not really understand. "q35" is bit different than "pc" but not smaller. The point was made that there is no point in emulating a machine which does not exist in the real world. Has it changed recently? > And especially, with -nodefaults adding a VGA means just that: adding a VGA. Usual issue - libvirt expects keyboard with VGA and x86 provides this as it always has keyboard. PPC does not have such default. -- Alexey
