Re: [Qemu-devel] Project idea: make QEMU more flexible

[Stefano Stabellini]

On Mon, 6 Jan 2014, Peter Maydell wrote:
> On 6 January 2014 15:11, Wei Liu <address@hidden> wrote:
> > On Mon, Jan 06, 2014 at 11:23:24PM +1000, Peter Crosthwaite wrote:
> > [...]
> >> >
> >> > Finally I got a qemu-system-null. And the effect is immediately visible
> >>
> >> qemu-system-null has been on my wish-list in the past, although my
> >> reasons were slightly different to yours. Specifically, the goal was
> >> to test CPUs in an RTL simulator interacting with RAM and peripheral
> >> devices hosted in QEMU.
> 
> > Cool. However small this is still a valid usecase.
> 
> However I don't think we can have a qemu-system-null
> (regardless of use cases) until/unless we get rid of
> all the things which are compile-time decided by
> the system config. In an ideal world we wouldn't have
> any of those (and perhaps you could even build
> support for more than one kind of CPU into one QEMU
> binary), but as it is we do have them, and so a
> qemu-system-null is not possible.

What are these compile-time things you are referring to?