On (Thu) 29 Dec 2011 [13:47:43], Christian Borntraeger wrote:
> From: Christian Borntraeger <borntrae...@de.ibm.com>
>
> when I tried qemu with -virtio-console pty the guest hangs and attaching on
> /dev/pts/<x> does
> not return anything if the attachement is too late.
> Turns out that the console is already throttled and the guest is heavily
> spinning but get_buf
> never returns the buffer. There seems to be no way for the console to
> unthrottle the port.
It doesn't really get throttled, since the throttling
enabling/disabling isn't yet done in QEMU. What happens is that the
chardev buffer gets filled up and qemu_chr_fe_write() doesn't return
-- send_all() keeps spinning.
I'll adjust the commit log message and submit.
Thanks.
Amit
