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

[Michael Tokarev]

On 04.09.2012 10:58, Michael Tokarev wrote:
> On 04.09.2012 10:53, Paolo Bonzini wrote:
>> Il 03/09/2012 20:13, Michael Tokarev ha scritto:
> []
>>>  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.
> []
>> Could it be this one?
>>
>> <http://permalink.gmane.org/gmane.comp.emulators.qemu/168209>
> 
> Removing this "pending" initialization fixes this problem too.

Actually it is not the same thing, and applying this path
does not solve the originak issue for me, neither does
updating to 1.2.0 help.

But it looks like I wasn't correct with the initial diagnostic.
Qemu (either 1.1 or 1.2) just sleeps for a few moments (about
2 seconds) after startup with my command line option, and I
thought it is stalled.

The actual problem appears to be qemu-kvm-specific, it does not
affect qemu (with or without -enable-kvm).

 qemu-kvm -nographic -kernel /boot/vmlinuz-$(uname -r) -append console=ttyS0 
-serial pty

This hangs till I send a char to the pty.

/mjt