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[Qemu-devel] apparently missing yet another notify_event()
From: |
Michael Tokarev |
Subject: |
[Qemu-devel] apparently missing yet another notify_event() |
Date: |
Mon, 03 Sep 2012 22:13:59 +0400 |
User-agent: |
Mozilla/5.0 (X11; Linux i686 on x86_64; rv:10.0.6esrpre) Gecko/20120817 Icedove/10.0.6 |
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
- [Qemu-devel] apparently missing yet another notify_event(),
Michael Tokarev <=