[ANNOUNCE] kvm-driver-disc-20080318

[ANNOUNCE] kvm-driver-disc-20080318

[Avi Kivity]

This is the first release of the kvm drivers disc -- a collection of kvm 
guest drivers packaged as an ISO 9660 CD-ROM for easy installation.

The driver disc can be obtained from the kvm download page, below.

Initial release:
- kvm-guest-drivers-linux-1
- kvm-guest-drivers-windows-1

http://kvm.qumranet.com

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: [ANNOUNCE] kvm-driver-disc-20080318

[david ahern]

Are you interested in collecting ports of the drivers for various distributions?

I have the virtio drivers working with RHEL4. The virtio_net appears to be
working better than e1000 for the workload I am testing with (though I still the
need the noapic boot option).  The virtio_blk driver mostly works (the VM
freezes from time and time which gdb and strace seem to clear); its performance
so far lags the scsi driver.

david


Avi Kivity wrote:
> This is the first release of the kvm drivers disc -- a collection of kvm 
> guest drivers packaged as an ISO 9660 CD-ROM for easy installation.
> 
> The driver disc can be obtained from the kvm download page, below.
> 
> Initial release:
> - kvm-guest-drivers-linux-1
> - kvm-guest-drivers-windows-1
> 
> http://kvm.qumranet.com
> 

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Re: [ANNOUNCE] kvm-driver-disc-20080318

[Anthony Liguori]

david ahern wrote:
> Are you interested in collecting ports of the drivers for various distributions?
>   

What we would like to do, is have the kvm-guest-drivers-linux.git tree 
autogenerate backports for as far back as we need them.  Posting what 
you needed to do for RHEL4 would be helpful.  What would be most helpful 
is actually submitting a patch to that repo that did the awk/cpp magic 
to generate the backport.

Regards,

Anthony Liguori

> I have the virtio drivers working with RHEL4. The virtio_net appears to be
> working better than e1000 for the workload I am testing with (though I still the
> need the noapic boot option).  The virtio_blk driver mostly works (the VM
> freezes from time and time which gdb and strace seem to clear); its performance
> so far lags the scsi driver.
>   



> david
>
>
> Avi Kivity wrote:
>   
>> This is the first release of the kvm drivers disc -- a collection of kvm 
>> guest drivers packaged as an ISO 9660 CD-ROM for easy installation.
>>
>> The driver disc can be obtained from the kvm download page, below.
>>
>> Initial release:
>> - kvm-guest-drivers-linux-1
>> - kvm-guest-drivers-windows-1
>>
>> http://kvm.qumranet.com
>>
>>     
>
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> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
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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: [ANNOUNCE] kvm-driver-disc-20080318

[Avi Kivity]

Anthony Liguori wrote:
> david ahern wrote:
>> Are you interested in collecting ports of the drivers for various 
>> distributions?
>>   
>
> What we would like to do, is have the kvm-guest-drivers-linux.git tree 
> autogenerate backports for as far back as we need them.  Posting what 
> you needed to do for RHEL4 would be helpful.  What would be most 
> helpful is actually submitting a patch to that repo that did the 
> awk/cpp magic to generate the backport.
>

It might be difficult for RHEL 4, which is 2.6.5 based IIRC.  If the 
magic required is more that 500 millithaums, then an independent driver 
would be better.


-- 
error compiling committee.c: too many arguments to function


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Re: [ANNOUNCE] kvm-driver-disc-20080318

[Alexey Eremenko]

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Initial release:
- kvm-guest-drivers-linux-1
- kvm-guest-drivers-windows-1

Out of the bunch only Win2000 drivers work.

1. kvm-guest-drivers-linux-1 fail to configure themselves, while 
2. XP drivers halt the VM.
I think Yan has newer XP drivers.

-Alexey, 19.3.2008

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Re: [ANNOUNCE] kvm-driver-disc-20080318

[david ahern]

Avi Kivity wrote:
> It might be difficult for RHEL 4, which is 2.6.5 based IIRC.  If the
> magic required is more that 500 millithaums, then an independent driver
> would be better.

RHEL4 is based on 2.6.9.

What do you mean by "magic required is more that 500 millithaums"?

david

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Re: [ANNOUNCE] kvm-driver-disc-20080318

[Anthony Liguori]

david ahern wrote:
> Avi Kivity wrote:
>   
>> It might be difficult for RHEL 4, which is 2.6.5 based IIRC.  If the
>> magic required is more that 500 millithaums, then an independent driver
>> would be better.
>>     
>
> RHEL4 is based on 2.6.9.
>
> What do you mean by "magic required is more that 500 millithaums"?
>   

I believe that was a joke :-)

Right now, we use an awk script to automatically insert a bunch of 
#ifdef COMPAT_xxx into the virtio drivers.  Combined with a special 
include header, this automatically creates a new source tree from the 
upstream bits that can be compiled on many different kernel versions.  
Right now we support roughly 2.6.18-2.6.25.

The question is how far can we push this before it gets ridiculous.  I'd 
like to try going back to 2.6.9.  Posting what you have now would be 
helpful.  If it gets too difficult, we may just have to have independent 
source trees for things like RHEL4.

Regards,

Anthony Liguori

> david
>
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Re: [ANNOUNCE] kvm-driver-disc-20080318

[Avi Kivity]

david ahern wrote:
> Avi Kivity wrote:
>   
>> It might be difficult for RHEL 4, which is 2.6.5 based IIRC.  If the
>> magic required is more that 500 millithaums, then an independent driver
>> would be better.
>>     
>
> RHEL4 is based on 2.6.9.
>
> What do you mean by "magic required is more that 500 millithaums"?
>
>   

A Thaum is the amount of magic required to conjure one standard white 
pigeon.

I meant that the amount of changes needed to port the driver to 2.6.9 is 
too large, the script to do automatic backporting might turn out to be 
less maintainable than keeping an independent source tree.  We're not 
far from that point even for 2.6.18; for example running the script 
against 2.6.25-current will produce an unbuildable driver.

-- 
error compiling committee.c: too many arguments to function


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Re: [ANNOUNCE] kvm-driver-disc-20080318

[david ahern]

I cringed a bit when you suggested the awk script route. It's quite likely that
drivers for older distributions have to be manually updated as needed. I'll post
my RHEL4 version in the next couple of days for comments.

thanks,
david


Anthony Liguori wrote:
> david ahern wrote:
>> Avi Kivity wrote:
>>  
>>> It might be difficult for RHEL 4, which is 2.6.5 based IIRC.  If the
>>> magic required is more that 500 millithaums, then an independent driver
>>> would be better.
>>>     
>>
>> RHEL4 is based on 2.6.9.
>>
>> What do you mean by "magic required is more that 500 millithaums"?
>>   
> 
> I believe that was a joke :-)
> 
> Right now, we use an awk script to automatically insert a bunch of
> #ifdef COMPAT_xxx into the virtio drivers.  Combined with a special
> include header, this automatically creates a new source tree from the
> upstream bits that can be compiled on many different kernel versions. 
> Right now we support roughly 2.6.18-2.6.25.
> 
> The question is how far can we push this before it gets ridiculous.  I'd
> like to try going back to 2.6.9.  Posting what you have now would be
> helpful.  If it gets too difficult, we may just have to have independent
> source trees for things like RHEL4.
> 
> Regards,
> 
> Anthony Liguori
> 
>> david
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by: Microsoft
>> Defy all challenges. Microsoft(R) Visual Studio 2008.
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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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