On Wed, Mar 13, 2013 at 06:01:40PM +0800, Dunrong Huang wrote: > Hi, Paolo && Stefan: > > When I test the dataplane feature with git master, I find that VM will > hang if dataplane is enabled. But if I use qemu-1.4.0, VM can start > normally. > > The command I boot QEMU is: > x86_64-softmmu/qemu-system-x86_64 -enable-kvm -m 1024 -smp 2 -drive > file=centos-6.4.raw,if=none,id=drive-virtio-disk,format=raw,cache=none,aio=native > -device > virtio-blk-pci,config-wce=off,scsi=off,x-data-plane=on,drive=drive-virtio-disk,id=virtio-disk > > git bisect implicates this bug was introduced by following commit: > > commit 82959e8262df7da882d715f8a0cb4e8c7cd6e94b > Author: Paolo Bonzini <pbonz...@redhat.com> > Date: Fri Feb 22 10:40:34 2013 +0100 > > dataplane: remove EventPoll in favor of AioContext
It reproduces here too using a RHEL 6.4 guest image. Hang at the BIOS screen before GRUB is loaded. Stefan