On 10/14/2011 04:55 AM, Vadim Rozenfeld wrote:
On Thu, 2011-10-13 at 15:47 +0100, Stefan Hajnoczi wrote:
On Thu, Oct 13, 2011 at 5:00 AM, hkran<address@hidden> 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.
Seems like a resource allocation problem
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.
What about ISR? Can you try changing balloon size and check if balloon
ISR was invoked or not?
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
To make the issue clearer, I do more tests about that. Now I use the
package virtio-win-prewhql-0.1-15-sources.zip from
http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/src/
The problem that the balloon driver status is incorrect was not
reproduced any longer, but boot failure still be there.
more tests told me as if the failure will occur only in the case where
virtio-serial and balloon are all attached when qemu booting:
(qemu) address@hidden ~]$
/home/huikai/qemu15/bin/qemu-system-x86_64 --enable-kvm -m 2048 -drive
file=/home/huikai/xp_shanghai.img,if=virtio -net user -net
nic,model=viga qxl -localtime -chardev stdio,id=muxstdio -mon
chardev=muxstdio -usb -usbdevice tablet -device virtio-serial,id=vs0
-chardev socket,path=/tmp/foo,server,nowait,id=foo -device
virtserialport,bus=vs0.0,chardev=foo,name=helloworld -serial
file:/tmp/xp_1014_6.log -balloon virtio,id=ball1
the trace:
Virtio-Serial driver started...built on Oct 14 2011 15:58:02
^M<--> VIOSerialEvtDeviceAdd
^M<--> VIOSerialInitInterruptHandling
^MBalloon driver, built on Oct 13 2011 17:34:56
^M<-- DriverEntry
^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
^M<--> VIOSerialEvtDevicePrepareHardware
^MIO Port Info [0000C080-0000C0A0]
^MWe have multiport host
^MVirtIOConsoleConfig->max_nr_ports 31
^M<--> VIOSerialEvtDeviceD0Entry
^M<--> VIOSerialInitAllQueues
^M<--> VIOSerialFillQueue
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89B13A50
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89B13638
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C07E08
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C07C50
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C07A98
... ...
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89BD14B8
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89B826E8
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89BE4450
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89BE2398
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C53468
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C37E18
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C374C0
^M--> VIOSerialFreeBuffer buf = 89C374C0, buf->va_buf = 89983000
^MVIOSerialRenewAllPorts
^M<--> VIOSerialFillQueue
^M--> VIOSerialAllocateBuffer
^M--> VIOSerialAddInBuf buf = 89C374C0
^M--> VIOSerialFreeBuffer buf = 89C374C0, buf->va_buf = 89983000
^MSetting VIRTIO_CONFIG_S_DRIVER_OK flag
^M
not any more output here.