Re: strange problem with virtio on guest with over 3648M RAM

[Henrik Holst <henrik@witsbits.com>]

Anthony Liguori wrote:
> Henrik Holst wrote:
>> Hello KVM developers!
>>
>> We are experiencing a very strange problem: we have been testing 
>> Ubuntu Hardy Heron Server as a guest (kvm-68 on the host) and when 
>> using the virtio nic everything works fine until we give the guest 
>> more than 3648 MiB of RAM.
>>
>> If we for example start with "-m 4096" then the ubuntu guest brings 
>> up eth0 but it is impossible to get a dhcp address and if one sets a 
>> static address no packets what so ever is leaving the guest.
>>
>> So there seam to be a problem with the virtio guest drivers when 
>> there is more than 3648 MiB of ram available :), is there anyone else 
>> that have experienced the same problems or are there people running 
>> virtio on guest with more ram where everything is working ok?
>>   
>
> It's a know bug.  I have a fix for it locally that I'll send out today.
>
> Regards,
>
> Anthony Liguori
Many thanks Anthony!

/Henrik Holst


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