Am 12.07.2017 um 07:51 hat Gerd Hoffmann geschrieben:
I think simply not having a default machine type (as already suggested elsewhere in this thread) is the best way to deal with this.
I would absolutely hate this. One of the nice things about qemu has always been that 'qemu disk.img' is enough to start a simple VM.
Well, not really. There is no "qemu" any more, and there are other defaults like default memory size which need tweaks, so the minimum command line isn't that short any more and looks more like this:
qemu-system-x86_64 -enable-kvm -m 1G disk.img
Depends on what you want to do, but in the common case yes. So we have already moved in the wrong direction. Not a good reason to do more of it. Actually, I think changing the defaults to -m 1G and -machine accel=kvm:tcg would be much less problematic than -M q35, so maybe that should be our first step towards better defaults. (Or at least something to schedule for 3.0.) And even changing the default to -M q35, however problematic, would still be nicer than making -M non-optional. Kevin