On 18/05/2018 19:13, Eduardo Habkost wrote: >> As much as we'd like to be helpful and validate input, you need a real >> time host too. I'm not sure how we'd find out - I suggest we do not >> bother for now. > I'm worried that people will start enabling the flag in all kinds > of scenarios where the guarantees can't be kept, and make the > meaning of the flag in practice completely different from its > documented meaning. I don't think we should try to detect anything. As far as QEMU is concerned, it's mostly garbage in, garbage out when it comes to invalid configurations. It's just a bit, and using it in invalid configurations is okay if you're doing it (for example) for debugging. Paolo