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Date: Wed, 12 Oct 2011 19:09:26 +0800
From: hkran <hkran@vnet.linux.ibm.com>
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Subject: [Qemu-devel] balloon driver on winxp guest start failed
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To: qemu-devel@nongnu.org

Hi,

I used balloon driver for windows  virtio-win-0.1-15.iso (from 
http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/bin/)

following the install guard , I installed the balloon driver like this:

devcon.exe install d:\wxp\x86\balloon.inf 
"PCI\VEN_1AF4&DEV_1002&SUBSYS_00051AF4&REV_00"
  then reboot guest Os, but the status of driver installed is always 
incorrect, that show me the driver start failed (code 10) in the device 
manager.

I typed the following cmds in the monitor command line:

(qemu) device_add virtio-balloon
(qemu) info balloon
balloon: actual=2048
(qemu) balloon 1024
(qemu) info balloon
balloon: actual=2048
(qemu) info balloon
balloon: actual=2048

And I also tried it by using "qemu -balloon virtio" param  when getting 
qemu up, the status is worse, the winxp guest froze at boot screen.

Am I using balloon driver in a correct way?