Paolo Bonzini <pbonzini@xxxxxxxxxx> writes: > On 05/06/20 01:30, Thiago Jung Bauermann wrote: >> Paolo Bonzini <pbonzini@xxxxxxxxxx> writes: >>> On 04/06/20 23:54, Thiago Jung Bauermann wrote: >>>> QEMU could always create a PEF object, and if the command line defines >>>> one, it will correspond to it. And if the command line doesn't define one, >>>> then it would also work because the PEF object is already there. >>> >>> How would you start a non-protected VM? >>> Currently it's the "-machine" >>> property that decides that, and the argument requires an id >>> corresponding to "-object". >> >> If there's only one object, there's no need to specify its id. > > This answers my question. However, the property is defined for all > machines (it's in the "machine" class), so if it takes the id for one > machine it does so for all of them. I don't understand much about QEMU internals, so perhaps it's not practical to implement but from an end-user perspective I think this logic can apply to all architectures (since my understanding is that all of them use only one object): make the id optional. If it's not specified, then there must be only one object, and the property will implicitly refer to it. Then, if an architecture doesn't need to specify parameters at object creation time, it can be implicitly created and the user doesn't have to worry about this detail. -- Thiago Jung Bauermann IBM Linux Technology Center
