Re: [Qemu-devel] windows guest virtio serial and balloon driver test issues

["Cao,Bing Bu" <caobingbu@gmail.com>]

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Hi,all


Thanks,Frenkel.The test application of the balloon must be run as admin.



But I found 2 problems(question) this week when testing windows guest 
drivers:


    *



     If only virtio serial driver installed,the virtio serial test app 
can not enumerate/find the virtio serial device,
     but after virtio balloon driver installed,the app can find the 
virtio serial device correctly.
     Because of the same GUID which balloon and serial both use?

*
*

    *


     When inflate/deflate the balloon size using qemu monitor balloon 
command,
     the total physical memory did not decrease/increase 
correspondingly,as seen from "resource monitor",
     only the "available memory" size descrease/increase.But I test on 
other Linux guest,
     the total physical memory of the guest OS was changed.

     Is it a problem? If not,is it confusing to user?
     Related to the windows internal memory management?




On 11/21/2011 06:33 PM, Arkady Frenkel wrote:
> On 11/21/2011 10:39 AM, Cao,Bing Bu wrote:
>> Hi,
>>
>>      Recently,I am testing windows guest driver on Win7 and
>> WinXP(32bit) with the latest windows guest driver development source.
>>      Download from
>> http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/src/
>>
>>
>> virtio-blk:
>>      It seems OK both on Win7 and WinXP,the r/w performance is better
>> than IDE disk.
>>
>>
>>
>> virtio-serial:
>>      I tried to test virtio serial driver using the test application in
>> the project.
>>
>>      WinXP:
>>      Write: OK
>>      Read: Error: Read File Failed.
>>
>>      Win7:
>>      The test application return error "can not find vioserial device".
>>      But i debug the code and check that the GetDevicePath() return
>> value is not NULL,and same as the value when testing on WinXP.
>>      Why the CreateFile() in init() not called? (:
>>
>>
>> virtio-balloon:
>>
>>      QEMU monitor: device_add virtio-balloon-pci
>>
>>      On the guest,a new device "PCI standard RAM controller" added.
>>      But the Device Manager prompt "No driver installed for this
>> device", but install the driver "balloon.sys" failed.
>>      It said the driver is up to date.    Confused. (:
>>
>>      How can I install and test the balloon driver on Windows?
>>
>>
>>
>> The kvm-guest-drivers-windows.git on kernel.org is not available,is
>> there any mirror git repository?
>> Any mail-list or bugzilla for windows guest driver?
>>
>> Any help from will be appreciated.
>>
>>
> You need to run serial test app as admin only.
>
> To install balloon you have to go throw additional option when click on
> "Browse my computer for driver software". Choose "Let me pick from the
> list of device drivers on my computer" option.
>
> Arkady
>

Best regards
Cao,Bing Bu


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