Re: [Qemu-devel] [PATCH 09/12] vl: Replace DT_NOGRAPHIC with MachineState field

[Markus Armbruster]

Paolo Bonzini <address@hidden> writes:

>> > Can you add a QOM property too, so that "-machine graphics=yes|no" can
>> > be used?
>> 
>> I can, but I would like to clarify the expected semantics. With
>> the -machine option, we would have:
>> 
>> * -display, which affects only the display UI.
>> * -nographic, which affects:
>>   * The display UI;
>>   * Hardware emulation;
>>   * serial/paralllel/virtioconsole output redirection.
>> * -machine graphics=no, which would affect only hardware
>>   emulation.

Like usb=, this is a request to board code to enable/disable an optional
component.

>> Is that correct?
>
> Yes.  In the case of PC, it might also add "-device sga" unless -nodefaults
> (or "-device sga") is specified.  But that's left for later.

I figure -nographic should then set -machine graphic=no to do its
hardware emulation part.