Re: [Qemu-devel] Main loop

[Glauber Costa]

> > Glauber spent some time with the IO thread recently.  Any reason you didn't
> > start with the existing IO thread (besides the fact that it doesn't work 
> > with
> > TCG)?
> > 
> 
> Because i wasn't writing a replacement for IO Thread to begin with (btw it
> does work with TCG), what it doesn't do is play nicely with icount[1], 
> work on Windows, and for mysterious reasons still requires alarm timers, 
> it also deadlocks for me when killing QEMU windows while running smp 
> guest, but that's easily corrected mistake somewhere i guess.

You wasn't, but you ended up doing so, since it is unlikely that they will both
live in the end. I am still reading your patch, and I still have to struggle a 
little
bit to understand it. Can you please tell us why do you think your approach is 
better?

The current I/O thread currently works with both kvm and tcg. For KVM, I am 
quite close
(expecting to post patches today) that enables the in-kernel irqchip for it, 
and pretty
close to do smp.

Note that I don't think it requires alarm timers at all, by design. So, again, 
why should
we drop what we have in favour of your implementation?