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Re: [Qemu-devel] dataplane bug: fail to start VM with dataplane enable
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] dataplane bug: fail to start VM with dataplane enable |
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Date: |
Wed, 13 Mar 2013 12:28:46 +0100 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
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 <address@hidden>
> 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