KVM on IBM POWER (PPC64) support in vdsm and ovirt

[Paulo de Rezende Pinatti]

On 11/13/2012 05:05 AM, Itamar Heim wrote:
> On 11/09/2012 08:35 AM, Itamar Heim wrote:
>> On 11/07/2012 04:17 PM, Paulo de Rezende Pinatti wrote:
>>> Hello all,
>>>
>>> I have consolidated the ideas for enabling ppc64 in ovirt-engine in a
>>> feature page:
>>> http://wiki.ovirt.org/wiki/Features/Engine_support_for_PPC64
>>>
>>> Suggestions and comments are greatly appreciated.
>>
>> iiuc, the most obvious change to mention is addition of an 'arch' field
>> to cluster, which would affect the list of supported cpu families, etc.?
>> (and to later know to filter all other aspects of entities based on this
>> arch field)?
>>
>> list of possible arch's would be per cluster compatibility level.
>> i'd expect default for API of this field to be x86_64 for backward
>> compatibility, so it is not mandatory.
>> I'd also prefer this field to be disabled or hidden if there is only one
>> option available in it.
>>
>> it gets more complicated, as VMs can be moved around between clusters,
>> exported/imported, etc.
>>
>> you would need to validate a VM isn't moved to a cluster with a
>> different arch, or imported into a cluster with a different arch as 
>> well.
>> (probably more like that).
>>
>> i assume the config to filter device types per arch like the network
>> devices is also for console (spice), audio, etc.
>>
>> the system already has the concept of filtering per cluster level, so
>> filtering per cluster level and arch would mean reviewing all places in
>> code for that.
>
> I'm adding roy/omer/michal as the work on libosinfo (patches in 
> gerrit[1]) seems to make some of these changes not needed (if it is 
> merged).
> rather just need to extend libosinfo with the information on ppc.
>
> for sure worth reviewing both approaches to make sure the chosen 
> solution benefits both and we collaborate on same end goal.

thanks, we will check these patches and possibly change the approach to 
use libosinfo.


>
> [1] some of the patches are:
> http://gerrit.ovirt.org/9065
> http://gerrit.ovirt.org/9063
> http://gerrit.ovirt.org/9049
>