On Thu, Oct 13, 2011 at 5:00 AM, hkran <hk...@vnet.linux.ibm.com> wrote: > On 10/12/2011 07:09 PM, hkran wrote: >> 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? >> >> >> > For the boot failure case, I take more looks into it. I open the trace > output and see the following when boot failed > Balloon driver, built on Oct 13 2011 10:46:59 > ^M<-- DriverEntry > ^Mfile z:\source\kvm-guest-drivers-windows\balloon\sys\driver.c line 151 > ^M--> BalloonDeviceAdd > ^M<-- BalloonDeviceAdd > ^M--> BalloonEvtDevicePrepareHardware > ^M<-> Port Resource [0000C0A0-0000C0C0] > ^M<-- BalloonEvtDevicePrepareHardware > ^M--> BalloonEvtDeviceD0Entry > ^M--> BalloonInit > ^M--> VIRTIO_BALLOON_F_STATS_VQ > ^M<-- BalloonInit > ^M--> BalloonInterruptEnable > ^M<-- BalloonInterruptEnable > > here, the system is blocked. > > I compare it with the logfile in the normal case that I hot-plugin the > balloon device, and then find the system blocked before calling at > BalloonInterruptDpc. > > Is it meaning that we open the interrupt of balloon device too soon when > booting the system?
I suggest CCing Vadim on virtio Windows driver questions. Not sure if he sees every qemu-devel email. Stefan
