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

[david ahern <daahern@cisco.com>]

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
>>
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