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? (http://bugs.debian.org/686524 is the original bugreport). Thanks, /mjt
