Re: [Qemu-devel] apparently missing yet another notify_event()

[Paolo Bonzini]

Il 03/09/2012 20:13, Michael Tokarev ha scritto:
> There's a new bugreport filed against qemu-kvm in debian,
> which looks very similar to what we already had before --
> https://bugs.launchpad.net/qemu/+bug/1021649
> which were fixed by adding qemu_notify_event() call.
> Later on these qemu_notify_event() calls become unnecessary
> as far as I remember.
> 
> But here is a new one.
> 
>  qemu -nographic -kernel /boot/vmlinuz-$(uname -r) -append console=ttyS0 
> -serial pty
> 
> This will hang with 100% CPU usage until something is sent
> to the pty.  <Enter> key is enough.
> 
> It does the same on qemu and kvm, with and without -enable-kvm,
> and it looks pretty much like another forgotten notify_event.
> And it happens on 1.1 and 1.2-tobe (today qemu/master), so should
> be fixed before 1.2 is released.
> 
> Note: libvirt uses pty-redirected serial port heavily, and this
> is where the users are hit, exactly.
> 
> The longer -serial specification (-chardev pty, -device isa-serial)
> triggers it too.
> 
> What's missing this time?

Could it be this one?

<http://permalink.gmane.org/gmane.comp.emulators.qemu/168209>

Paolo