Windows PV driver for KVM

Windows PV driver for KVM

[Jiang, Yunhong]

I noticed there is a windows PV driver based on virtIO in
http://sourceforge.net/project/showfiles.php?group_id=180599

But when I enable the driver in guest, the guest will hang. I'm using
changeset around April, 18. Since the driver is created in March, I
assume the changeset in Apri should be ok.

Are there any special action needed to enable the PV driver in windows?
Have anyone tried it recently?

-- Yunhong Jiang

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Re: Windows PV driver for KVM

[Avi Kivity]

Jiang, Yunhong wrote:
> I noticed there is a windows PV driver based on virtIO in
> http://sourceforge.net/project/showfiles.php?group_id=180599
>
> But when I enable the driver in guest, the guest will hang. I'm using
> changeset around April, 18. Since the driver is created in March, I
> assume the changeset in Apri should be ok.
>
> Are there any special action needed to enable the PV driver in windows?
> Have anyone tried it recently?
>   

We are using it in production.  What HAL is the guest using?  Are you 
running with smp?

-- 
Any sufficiently difficult bug is indistinguishable from a feature.


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Re: Windows PV driver for KVM

[Jiang, Yunhong]

Avi Kivity <mailto:avi@qumranet.com> wrote:
> Jiang, Yunhong wrote:
>> I noticed there is a windows PV driver based on virtIO in
>> http://sourceforge.net/project/showfiles.php?group_id=180599
>> 
>> But when I enable the driver in guest, the guest will hang. I'm using
>> changeset around April, 18. Since the driver is created in March, I
>> assume the changeset in Apri should be ok.
>> 
>> Are there any special action needed to enable the PV driver in
windows?
>> Have anyone tried it recently?
>> 
> 
> We are using it in production.  What HAL is the guest using?  Are you
> running with smp? 

The HAL is ACPI multipprocessor PC. 
It is a UP guest. But I do notice one thing strange. When I use device
manager->Processors, I see a lot of CPU listed. But it is really a UP
system and I can only get one cpu in the task manager->performance
window. Not sure if that's the reason of the hang.

-- Yunhong Jiang

> 
> --
> Any sufficiently difficult bug is indistinguishable from a feature.

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Re: Windows PV driver for KVM

[Dor Laor]

On Wed, 2008-05-07 at 21:17 +0800, Jiang, Yunhong wrote:
> Avi Kivity <mailto:avi@qumranet.com> wrote:
> > Jiang, Yunhong wrote:
> >> I noticed there is a windows PV driver based on virtIO in
> >> http://sourceforge.net/project/showfiles.php?group_id=180599
> >> 
> >> But when I enable the driver in guest, the guest will hang. I'm using
> >> changeset around April, 18. Since the driver is created in March, I
> >> assume the changeset in Apri should be ok.
> >> 
> >> Are there any special action needed to enable the PV driver in
> windows?
> >> Have anyone tried it recently?
> >> 
> > 
> > We are using it in production.  What HAL is the guest using?  Are you
> > running with smp? 
> 
> The HAL is ACPI multipprocessor PC. 
> It is a UP guest. But I do notice one thing strange. When I use device
> manager->Processors, I see a lot of CPU listed. But it is really a UP
> system and I can only get one cpu in the task manager->performance
> window. Not sure if that's the reason of the hang.
> 

We just fixed an smp bug for virtio (also triggered by single processor
with ACPI multiprocessor HAL). We'll publish a new binary tomorrow.

The reason you see multiple cpus although there is only one is that we
expose the maximum number in the bios. The system is actually uses the
required number so this behavior is ok.


> -- Yunhong Jiang
> 
> > 
> > --
> > Any sufficiently difficult bug is indistinguishable from a feature.
> 
> -------------------------------------------------------------------------
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> Use priority code J8TL2D2. 
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> _______________________________________________
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> kvm-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/kvm-devel


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Re: Windows PV driver for KVM

[Jiang, Yunhong]

Dor Laor <mailto:dor.laor@qumranet.com> wrote:
> On Wed, 2008-05-07 at 21:17 +0800, Jiang, Yunhong wrote:
>> Avi Kivity <mailto:avi@qumranet.com> wrote:

> We just fixed an smp bug for virtio (also triggered by single
processor
> with ACPI multiprocessor HAL). We'll publish a new binary tomorrow.
> 
> The reason you see multiple cpus although there is only one is that we
> expose the maximum number in the bios. The system is actually uses the
> required number so this behavior is ok.

Thanks for your clarification.  I will try the new one when it is
available.
I'm wondering when you publish the binary, is it possible to share the
pdb file also? That will be helpful if want to do some debug. 

> 
> 
>> -- Yunhong Jiang
>> 
>>> 
>>> --
>>> Any sufficiently difficult bug is indistinguishable from a feature.
>> 
>> 
> ---------------------------------------------------------------
> ----------
>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
>> Don't miss this year's exciting event. There's still time to save
$100.
>> Use priority code J8TL2D2. 
>> 
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> sun.com/javaone
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>> kvm-devel mailing list
>> kvm-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/kvm-devel

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Re: Windows PV driver for KVM

[Jiang, Yunhong]

Hi, Dor, I just checked the URL and seems it is not updated still,
willyou update it?

-- Yunhong Jiang

Dor Laor <mailto:dor.laor@qumranet.com> wrote:
> On Wed, 2008-05-07 at 21:17 +0800, Jiang, Yunhong wrote:
>> Avi Kivity <mailto:avi@qumranet.com> wrote:
>>> Jiang, Yunhong wrote:
>>>> I noticed there is a windows PV driver based on virtIO in
>>>> http://sourceforge.net/project/showfiles.php?group_id=180599
>>>> 
>>>> But when I enable the driver in guest, the guest will hang. I'm
using
>>>> changeset around April, 18. Since the driver is created in March, I
>>>> assume the changeset in Apri should be ok.
>>>> 
>>>> Are there any special action needed to enable the PV driver in
windows?
>>>> Have anyone tried it recently?
>>>> 
>>> 
>>> We are using it in production.  What HAL is the guest using?  Are
you
>>> running with smp?
>> 
>> The HAL is ACPI multipprocessor PC.
>> It is a UP guest. But I do notice one thing strange. When I use
device
>> manager->Processors, I see a lot of CPU listed. But it is really a UP
>> system and I can only get one cpu in the task manager->performance
>> window. Not sure if that's the reason of the hang.
>> 
> 
> We just fixed an smp bug for virtio (also triggered by single
processor
> with ACPI multiprocessor HAL). We'll publish a new binary tomorrow.
> 
> The reason you see multiple cpus although there is only one is that we
> expose the maximum number in the bios. The system is actually uses the
> required number so this behavior is ok.
> 
> 
>> -- Yunhong Jiang
>> 
>>> 
>>> --
>>> Any sufficiently difficult bug is indistinguishable from a feature.
>> 
>> 
> ---------------------------------------------------------------
> ----------
>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
>> Don't miss this year's exciting event. There's still time to save
$100.
>> Use priority code J8TL2D2. 
>> 
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.
> sun.com/javaone
>> _______________________________________________
>> kvm-devel mailing list
>> kvm-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/kvm-devel

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Re: Windows PV driver for KVM

[Dor Laor]

On Wed, 2008-05-14 at 08:55 +0800, Jiang, Yunhong wrote:
> Hi, Dor, I just checked the URL and seems it is not updated still,
> willyou update it?

Avi, since it passed regression, we can release it (also with the .pdb
file).

> 
> -- Yunhong Jiang
> 
> Dor Laor <mailto:dor.laor@qumranet.com> wrote:
> > On Wed, 2008-05-07 at 21:17 +0800, Jiang, Yunhong wrote:
> >> Avi Kivity <mailto:avi@qumranet.com> wrote:
> >>> Jiang, Yunhong wrote:
> >>>> I noticed there is a windows PV driver based on virtIO in
> >>>> http://sourceforge.net/project/showfiles.php?group_id=180599
> >>>> 
> >>>> But when I enable the driver in guest, the guest will hang. I'm
> using
> >>>> changeset around April, 18. Since the driver is created in March, I
> >>>> assume the changeset in Apri should be ok.
> >>>> 
> >>>> Are there any special action needed to enable the PV driver in
> windows?
> >>>> Have anyone tried it recently?
> >>>> 
> >>> 
> >>> We are using it in production.  What HAL is the guest using?  Are
> you
> >>> running with smp?
> >> 
> >> The HAL is ACPI multipprocessor PC.
> >> It is a UP guest. But I do notice one thing strange. When I use
> device
> >> manager->Processors, I see a lot of CPU listed. But it is really a UP
> >> system and I can only get one cpu in the task manager->performance
> >> window. Not sure if that's the reason of the hang.
> >> 
> > 
> > We just fixed an smp bug for virtio (also triggered by single
> processor
> > with ACPI multiprocessor HAL). We'll publish a new binary tomorrow.
> > 
> > The reason you see multiple cpus although there is only one is that we
> > expose the maximum number in the bios. The system is actually uses the
> > required number so this behavior is ok.
> > 
> > 
> >> -- Yunhong Jiang
> >> 
> >>> 
> >>> --
> >>> Any sufficiently difficult bug is indistinguishable from a feature.
> >> 
> >> 
> > ---------------------------------------------------------------
> > ----------
> >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
> >> Don't miss this year's exciting event. There's still time to save
> $100.
> >> Use priority code J8TL2D2. 
> >> 
> > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.
> > sun.com/javaone
> >> _______________________________________________
> >> kvm-devel mailing list
> >> kvm-devel@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/kvm-devel


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Re: Windows PV driver for KVM

[Jiang, Yunhong]

It's working now, thanks very much!

-- Yunhong Jiang

Dor Laor <mailto:dor.laor@qumranet.com> wrote:
> On Wed, 2008-05-14 at 08:55 +0800, Jiang, Yunhong wrote:
>> Hi, Dor, I just checked the URL and seems it is not updated still,
>> willyou update it?
> 
> Avi, since it passed regression, we can release it (also with the .pdb
> file). 
> 
>> 
>> -- Yunhong Jiang
>> 
>> Dor Laor <mailto:dor.laor@qumranet.com> wrote:
>>> On Wed, 2008-05-07 at 21:17 +0800, Jiang, Yunhong wrote:
>>>> Avi Kivity <mailto:avi@qumranet.com> wrote:
>>>>> Jiang, Yunhong wrote:
>>>>>> I noticed there is a windows PV driver based on virtIO in
>>>>>> http://sourceforge.net/project/showfiles.php?group_id=180599
>>>>>> 
>>>>>> But when I enable the driver in guest, the guest will hang. I'm
using
>>>>>> changeset around April, 18. Since the driver is created in March,
I
>>>>>> assume the changeset in Apri should be ok.
>>>>>> 
>>>>>> Are there any special action needed to enable the PV driver in
windows?
>>>>>> Have anyone tried it recently?
>>>>>> 
>>>>> 
>>>>> We are using it in production.  What HAL is the guest using?  Are
you
>>>>> running with smp?
>>>> 
>>>> The HAL is ACPI multipprocessor PC.
>>>> It is a UP guest. But I do notice one thing strange. When I use
device
>>>> manager->Processors, I see a lot of CPU listed. But it is really a
UP
>>>> system and I can only get one cpu in the task manager->performance
>>>> window. Not sure if that's the reason of the hang.
>>>> 
>>> 
>>> We just fixed an smp bug for virtio (also triggered by single
processor
>>> with ACPI multiprocessor HAL). We'll publish a new binary tomorrow.
>>> 
>>> The reason you see multiple cpus although there is only one is that
we
>>> expose the maximum number in the bios. The system is actually uses
the
>>> required number so this behavior is ok.
>>> 
>>> 
>>>> -- Yunhong Jiang
>>>> 
>>>>> 
>>>>> --
>>>>> Any sufficiently difficult bug is indistinguishable from a
feature.
>>>> 
>>>> 
>>> ---------------------------------------------------------------
>>> ----------
>>>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
>>>> Don't miss this year's exciting event. There's still time to save
$100.
>>>> Use priority code J8TL2D2. 
>>>> 
>>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.
>>> sun.com/javaone
>>>> _______________________________________________
>>>> kvm-devel mailing list
>>>> kvm-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/kvm-devel

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